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7d55ca06d1 | |||
Ludovic Poujol | 2e40dfb33e | ||
Ludovic Poujol | 0c995a94d8 | ||
Jérémy Lecour | 2bdcf01882 | ||
Jérémy Lecour | 5eb3129e47 | ||
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Jérémy Lecour | 0041789d5e | ||
Jérémy Lecour | c36be1c9c9 | ||
Jérémy Lecour | be023616a5 | ||
Jérémy Dubois | ba12a45d8a | ||
Jérémy Dubois | f52971a173 | ||
Ludovic Poujol | 45f04e322a | ||
Jérémy Lecour | 0b3ed7ae25 | ||
Jérémy Lecour | e7aaefef9a | ||
Ludovic Poujol | 7f3f69329f | ||
Jérémy Lecour | 3b4ffec174 | ||
Jérémy Lecour | 30838eb892 | ||
Jérémy Lecour | a600d03ab4 | ||
Jérémy Lecour | 48983bfa2d | ||
Jérémy Lecour | cfa1c20332 | ||
Ludovic Poujol | 351158891e | ||
Ludovic Poujol | 79c1790564 | ||
Ludovic Poujol | c31288f318 | ||
Jérémy Lecour | 5f0de36216 | ||
Jérémy Lecour | d811e5647d | ||
Jérémy Lecour | 08182dd606 | ||
Jérémy Lecour | ef18fccc96 | ||
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Jérémy Lecour | a3ab1a4f2e | ||
Jérémy Lecour | e02be5b852 | ||
Jérémy Lecour | 9a9fc7fd44 | ||
Jérémy Lecour | 72e3729a78 | ||
Jérémy Lecour | c48534146a | ||
Jérémy Dubois | 9898ff9e62 | ||
Jérémy Lecour | 80307172af | ||
Jérémy Lecour | 7126d70982 | ||
5a907b1ce0 | |||
Jérémy Lecour | ba193f22fa | ||
Ludovic Poujol | 3bcaee5b58 | ||
Ludovic Poujol | 7c384a777b | ||
Ludovic Poujol | 0ec2cb2f4b | ||
Ludovic Poujol | 30041b8949 | ||
Ludovic Poujol | 60ca9f67b2 |
76
CHANGELOG.md
Normal file
76
CHANGELOG.md
Normal file
|
@ -0,0 +1,76 @@
|
|||
The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
|
||||
and this project **does not adhere to [Semantic Versioning](http://semver.org/spec/v2.0.0.html)**.
|
||||
|
||||
## [Unreleased]
|
||||
|
||||
### Added
|
||||
|
||||
* safe-start and safe-restart
|
||||
* Chain MINIFW-DOCKER-INPUT-MANUAL for more granular/manual filtering of incoming traffic to services inside docker
|
||||
|
||||
### Changed
|
||||
|
||||
### Deprecated
|
||||
|
||||
### Removed
|
||||
|
||||
### Fixed
|
||||
|
||||
* fix interactive mode detection
|
||||
|
||||
### Security
|
||||
|
||||
## [23.07] - 2023-07-04
|
||||
|
||||
### Added
|
||||
|
||||
* new "check-active-config" command to check if the active configuration is th e same as the one persisted to disk
|
||||
|
||||
### Changed
|
||||
|
||||
* capture cmp(1) error output
|
||||
* early error if script is not run as root
|
||||
* extract "include_files" function
|
||||
* print help/usage with list of possible commands
|
||||
|
||||
## [23.02] - 2023-02-01
|
||||
|
||||
* Export status without colors (to keep clean diffs)
|
||||
|
||||
## [22.06] - 2022-06-06
|
||||
|
||||
### Changed
|
||||
|
||||
* Configure sysctl values to IPv6 when applicable
|
||||
|
||||
### Fixed
|
||||
|
||||
* status output (number of # in headers)
|
||||
|
||||
## [22.05] - 2022-05-10
|
||||
|
||||
#### Fixed
|
||||
|
||||
* status output (number of # in headers)
|
||||
|
||||
## [22.04] - 2022-04-28
|
||||
|
||||
### Added
|
||||
|
||||
* markers for each section of status output
|
||||
* store and compare state between restart
|
||||
* colorize output if terminal supports colors
|
||||
* simple syslog logging
|
||||
* "version" action
|
||||
|
||||
### Changed
|
||||
|
||||
* use long options in some places
|
||||
* output is normalized
|
||||
* source legacy config after macros but before DROP policy
|
||||
* source configuration only for valid actions
|
||||
* improve legacy config parsing
|
||||
|
||||
### Fixed
|
||||
|
||||
* force remove temporary files
|
33
README.md
33
README.md
|
@ -8,35 +8,40 @@ See https://gitea.evolix.org/evolix/minifirewall
|
|||
## Install
|
||||
|
||||
~~~
|
||||
install -m 0700 minifirewall /etc/init.d/minifirewall
|
||||
install -m 0600 minifirewall.conf /etc/default/minifirewall
|
||||
install --mode 0700 minifirewall /etc/init.d/minifirewall
|
||||
install --mode 0600 minifirewall.conf /etc/default/minifirewall
|
||||
mkdir --mode 0700 /etc/minifirewall.d
|
||||
~~~
|
||||
|
||||
## Config
|
||||
|
||||
Edit /etc/default/minifirewall file:
|
||||
|
||||
* If your interface is not _eth0_, change *INT* variable
|
||||
* If you don't IPv6 : *IPv6=off*
|
||||
* Modify *INTLAN* variable, probably with your *IP/32* or your local network if you trust it
|
||||
* Set your trusted and privilegied IP addresses in *TRUSTEDIPS* and *PRIVILEGIEDIPS* variables
|
||||
* Authorize your +public+ services with *SERVICESTCP1* and *SERVICESUDP1* variables
|
||||
* Authorize your +semi-public+ services (only for *TRUSTEDIPS* and *PRIVILEGIEDIPS* ) with *SERVICESTCP2* and *SERVICESUDP2* variables
|
||||
* Authorize your +private+ services (only for *TRUSTEDIPS* ) with *SERVICESTCP3* and *SERVICESUDP3* variables
|
||||
* If your interface is not `eth0`, change `INT` variable
|
||||
* If you don't use IPv6, set `IPv6='off'`
|
||||
* Modify `INTLAN` variable, probably with your `<IP>/32` or your local network if you trust it
|
||||
* Set your trusted and privilegied IP addresses in `TRUSTEDIPS` and `PRIVILEGIEDIPS` variables
|
||||
* Authorize your **public** services with `SERVICESTCP1` and `SERVICESUDP1` variables
|
||||
* Authorize your **semi-public** services (only for `TRUSTEDIPS` and `PRIVILEGIEDIPS` ) with `SERVICESTCP2` and `SERVICESUDP2` variables
|
||||
* Authorize your **private** services (only for `TRUSTEDIPS` ) with `SERVICESTCP3` and `SERVICESUDP3` variables
|
||||
* Configure your authorizations for external services : DNS, HTTP, HTTPS, SMTP, SSH, NTP
|
||||
* Add your specific rules
|
||||
|
||||
### Docker
|
||||
|
||||
To use minifirewall with Docker you need to change the variable `DOCKER='on'`
|
||||
Then, authorisation for public/semi-public/private ports will also work for dockerized services
|
||||
|
||||
**WARNING** : When the port mapping on the host is different than in the container (ie: listen on :8090 on the host, but the service in the container listen on :8080)
|
||||
you need to use the port used by the container (ie: 8080) in the public/semi-public/private port list
|
||||
|
||||
## Usage
|
||||
|
||||
~~~
|
||||
/etc/init.d/minifirewall start/stop/restart
|
||||
~~~
|
||||
|
||||
If you want to add minifirewall in boot sequence:
|
||||
|
||||
~~~
|
||||
systemctl enable minifirewall
|
||||
~~~
|
||||
If you want to add minifirewall in boot sequence, add the start command to `/usr/share/scripts/alert5`.
|
||||
|
||||
## License
|
||||
|
||||
|
|
18
Vagrantfile
vendored
18
Vagrantfile
vendored
|
@ -1,8 +1,6 @@
|
|||
# -*- mode: ruby -*-
|
||||
# vi: set ft=ruby :
|
||||
|
||||
Vagrant::DEFAULT_SERVER_URL.replace('https://vagrantcloud.com')
|
||||
|
||||
# Load ~/.VagrantFile if exist, permit local config provider
|
||||
vagrantfile = File.join("#{Dir.home}", '.VagrantFile')
|
||||
load File.expand_path(vagrantfile) if File.exists?(vagrantfile)
|
||||
|
@ -11,16 +9,26 @@ Vagrant.configure('2') do |config|
|
|||
config.vm.synced_folder "./", "/vagrant", type: "rsync", rsync__exclude: [ '.vagrant', '.git' ]
|
||||
config.ssh.shell="/bin/sh"
|
||||
|
||||
$install = <<SCRIPT
|
||||
deps = <<SCRIPT
|
||||
DEBIAN_FRONTEND=noninteractive apt-get -yq install iptables
|
||||
SCRIPT
|
||||
|
||||
install = <<SCRIPT
|
||||
ln -fs /vagrant/minifirewall /etc/init.d/minifirewall
|
||||
ln -fs /vagrant/minifirewall.conf /etc/default/minifirewall
|
||||
mkdir -p /etc/minifirewall.d
|
||||
SCRIPT
|
||||
|
||||
post = <<SCRIPT
|
||||
sed -i "s|^TRUSTEDIPS='|TRUSTEDIPS='192.168.121.0/24 |" /etc/default/minifirewall
|
||||
SCRIPT
|
||||
|
||||
config.vm.define "minifirewall" do |node|
|
||||
node.vm.hostname = "minifirewall"
|
||||
node.vm.box = "debian/stretch64"
|
||||
config.vm.provision "install", type: "shell", :inline => $install
|
||||
node.vm.box = "debian/bookworm64"
|
||||
config.vm.provision "deps", type: "shell", inline: deps
|
||||
config.vm.provision "install", type: "shell", inline: install
|
||||
config.vm.provision "post", type: "shell", inline: post
|
||||
end
|
||||
|
||||
end
|
||||
|
|
1379
minifirewall
1379
minifirewall
|
@ -1,10 +1,11 @@
|
|||
#!/bin/sh
|
||||
# shellcheck disable=SC2059
|
||||
|
||||
# minifirewall is shellscripts for easy firewalling on a standalone server
|
||||
# we used netfilter/iptables http://netfilter.org/ designed for recent Linux kernel
|
||||
# See https://forge.evolix.org/projects/minifirewall
|
||||
# minifirewall is a shell script for easy firewalling on a standalone server
|
||||
# It uses netfilter/iptables http://netfilter.org/ designed for recent Linux kernel
|
||||
# See https://gitea.evolix.org/evolix/minifirewall
|
||||
|
||||
# Copyright (c) 2007-2015 Evolix
|
||||
# Copyright (c) 2007-2023 Evolix
|
||||
# This program is free software; you can redistribute it and/or
|
||||
# modify it under the terms of the GNU General Public License
|
||||
# as published by the Free Software Foundation; either version 3
|
||||
|
@ -17,7 +18,7 @@
|
|||
#
|
||||
|
||||
### BEGIN INIT INFO
|
||||
# Provides: minfirewall
|
||||
# Provides: minifirewall
|
||||
# Required-Start:
|
||||
# Required-Stop:
|
||||
# Should-Start: $network $syslog $named
|
||||
|
@ -28,16 +29,36 @@
|
|||
# Description: Firewall designed for standalone server
|
||||
### END INIT INFO
|
||||
|
||||
DESC="minifirewall"
|
||||
NAME="minifirewall"
|
||||
VERSION="23.07"
|
||||
|
||||
PROGNAME="minifirewall"
|
||||
# shellcheck disable=SC2034
|
||||
DESC="Firewall designed for standalone server"
|
||||
|
||||
set -u
|
||||
|
||||
if [ "$(id -u)" -ne "0" ] ; then
|
||||
echo "${PROGNAME} must be run as root." >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Variables configuration
|
||||
#########################
|
||||
|
||||
config_file="/etc/default/minifirewall"
|
||||
includes_dir="/etc/minifirewall.d"
|
||||
|
||||
# iptables paths
|
||||
IPT=/sbin/iptables
|
||||
IPT6=/sbin/ip6tables
|
||||
IPT=$(command -v iptables)
|
||||
if [ -z "${IPT}" ]; then
|
||||
echo "Unable to find 'iptables\` command in PATH." >&2
|
||||
exit 1
|
||||
fi
|
||||
IPT6=$(command -v ip6tables)
|
||||
if [ -z "${IPT6}" ]; then
|
||||
echo "Unable to find 'ip6tables\` command in PATH." >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# TCP/IP variables
|
||||
LOOPBACK='127.0.0.0/8'
|
||||
|
@ -51,335 +72,1273 @@ BROAD='255.255.255.255'
|
|||
PORTSROOT='0:1023'
|
||||
PORTSUSER='1024:65535'
|
||||
|
||||
# Configuration
|
||||
|
||||
case "$1" in
|
||||
start)
|
||||
INT=''
|
||||
IPV6=''
|
||||
DOCKER=''
|
||||
INTLAN=''
|
||||
TRUSTEDIPS=''
|
||||
PRIVILEGIEDIPS=''
|
||||
SERVICESTCP1p=''
|
||||
SERVICESUDP1p=''
|
||||
SERVICESTCP1=''
|
||||
SERVICESUDP1=''
|
||||
SERVICESTCP2=''
|
||||
SERVICESUDP2=''
|
||||
SERVICESTCP3=''
|
||||
SERVICESUDP3=''
|
||||
DNSSERVEURS=''
|
||||
HTTPSITES=''
|
||||
HTTPSSITES=''
|
||||
FTPSITES=''
|
||||
SSHOK=''
|
||||
SMTPOK=''
|
||||
SMTPSECUREOK=''
|
||||
NTPOK=''
|
||||
PROXY=''
|
||||
PROXYBYPASS=''
|
||||
PROXYPORT=''
|
||||
BACKUPSERVERS=''
|
||||
|
||||
echo "Start IPTables rules..."
|
||||
LEGACY_CONFIG='off'
|
||||
|
||||
STATE_FILE_LATEST='/var/run/minifirewall_state_latest'
|
||||
STATE_FILE_CURRENT='/var/run/minifirewall_state_current'
|
||||
STATE_FILE_PREVIOUS='/var/run/minifirewall_state_previous'
|
||||
STATE_FILE_DIFF='/var/run/minifirewall_state_diff'
|
||||
|
||||
ACTIVE_CONFIG='/var/run/minifirewall_active_config'
|
||||
ACTIVE_CONFIG_DIFF="${ACTIVE_CONFIG}.diff"
|
||||
|
||||
SAFETY_LOCK='/var/run/minifirewall_safety.lock'
|
||||
SAFETY_OUTPUT='/var/run/minifirewall_safety.out'
|
||||
SAFETY_TIMER=30
|
||||
|
||||
LOGGER_BIN=$(command -v logger)
|
||||
|
||||
# No colors by default
|
||||
RED=''
|
||||
GREEN=''
|
||||
YELLOW=''
|
||||
BLUE=''
|
||||
MAGENTA=''
|
||||
CYAN=''
|
||||
WHITE=''
|
||||
BOLD=''
|
||||
RESET=''
|
||||
|
||||
# check if stdout is a terminal...
|
||||
if [ -t 1 ]; then
|
||||
INTERACTIVE=1
|
||||
|
||||
# see if it supports colors...
|
||||
ncolors=$(tput colors)
|
||||
|
||||
# shellcheck disable=SC2086
|
||||
if [ -n "${ncolors}" ] && [ ${ncolors} -ge 8 ]; then
|
||||
RED=$(tput setaf 1)
|
||||
GREEN=$(tput setaf 2)
|
||||
YELLOW=$(tput setaf 3)
|
||||
BLUE=$(tput setaf 4)
|
||||
MAGENTA=$(tput setaf 5)
|
||||
CYAN=$(tput setaf 6)
|
||||
WHITE=$(tput setaf 7)
|
||||
BOLD=$(tput bold)
|
||||
RESET='\e[m'
|
||||
fi
|
||||
else
|
||||
INTERACTIVE=0
|
||||
fi
|
||||
readonly INTERACTIVE
|
||||
|
||||
## pseudo dry-run :
|
||||
## Uncomment and call these functions instead of the real iptables and ip6tables commands
|
||||
# IPT="fake_iptables"
|
||||
# IPT6="fake_ip6tables"
|
||||
# fake_iptables() {
|
||||
# printf "DRY-RUN iptables %s\n" "$*"
|
||||
# }
|
||||
# fake_ip6tables() {
|
||||
# printf "DRY-RUN ip6tables %s\n" "$*"
|
||||
# }
|
||||
## Beware that commands executed from included files are not modified by this trick.
|
||||
|
||||
is_interactive() {
|
||||
test "${INTERACTIVE}" = "1"
|
||||
}
|
||||
remove_colors() {
|
||||
sed -r 's/\x1B\[(;?[0-9]{1,3})+[mGK]//g'
|
||||
}
|
||||
syslog_info() {
|
||||
if [ -x "${LOGGER_BIN}" ]; then
|
||||
${LOGGER_BIN} -t "${PROGNAME}" -p daemon.info "$1"
|
||||
fi
|
||||
}
|
||||
syslog_error() {
|
||||
if [ -x "${LOGGER_BIN}" ]; then
|
||||
${LOGGER_BIN} -t "${PROGNAME}" -p daemon.error "$1"
|
||||
fi
|
||||
}
|
||||
sort_values() {
|
||||
echo "$*" | tr ' ' '\n' | sort -h
|
||||
}
|
||||
is_ipv6_enabled() {
|
||||
test "${IPV6}" != "off"
|
||||
}
|
||||
is_docker_enabled() {
|
||||
test "${DOCKER}" = "on"
|
||||
}
|
||||
is_proxy_enabled() {
|
||||
test "${PROXY}" = "on"
|
||||
}
|
||||
is_ipv6() {
|
||||
echo "$1" | grep -q ':'
|
||||
}
|
||||
is_legacy_config() {
|
||||
test "${LEGACY_CONFIG}" != "off"
|
||||
}
|
||||
chain_exists() {
|
||||
chain_name="$1"
|
||||
if [ $# -ge 2 ]; then
|
||||
intable="--table $2"
|
||||
else
|
||||
intable=""
|
||||
fi
|
||||
# shellcheck disable=SC2086
|
||||
iptables ${intable} -nL "${chain_name}" >/dev/null 2>&1
|
||||
}
|
||||
source_file_or_error() {
|
||||
file=$1
|
||||
syslog_info "sourcing \`${file}'"
|
||||
printf "${BLUE}sourcing \`%s'${RESET}\n" "${file}"
|
||||
|
||||
tmpfile=$(mktemp --tmpdir=/tmp minifirewall.XXX)
|
||||
. "${file}" 2>"${tmpfile}" >&2
|
||||
|
||||
if [ -s "${tmpfile}" ]; then
|
||||
syslog_error "Error while sourcing ${file}"
|
||||
printf "${RED}%s returns standard or error output (see below). Stopping.${RESET}\n" ${file} >&2
|
||||
cat "${tmpfile}"
|
||||
exit 1
|
||||
fi
|
||||
rm -f "${tmpfile}"
|
||||
}
|
||||
source_configuration() {
|
||||
if ! test -f ${config_file}; then
|
||||
printf "${RED}%s does not exist${RESET}\n" "${config_file}" >&2
|
||||
|
||||
## We still want to deal with this really old configuration file
|
||||
## even if it has been deprecated since Debian 8
|
||||
old_config_file="/etc/firewall.rc"
|
||||
if test -f ${old_config_file}; then
|
||||
printf "${YELLOW}%s is deprecated and ignored. Rename it to %s${RESET}\n" "${old_config_file}" "${config_file}" >&2
|
||||
fi
|
||||
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# If we find something other than a blank line, a comment or a variable assignment
|
||||
if grep --quiet --extended-regexp --invert-match "^\s*(#|$|\w+=)" "${config_file}"; then
|
||||
# Backward compatible mode
|
||||
###########################
|
||||
|
||||
printf "${YELLOW}legacy config detected${RESET}\n"
|
||||
LEGACY_CONFIG='on'
|
||||
|
||||
# Non-backward compatible mode
|
||||
###############################
|
||||
|
||||
# If we ever want to remove the backward compatible mode
|
||||
# we can remove the two lines above and uncomment the lines below.
|
||||
# They break if any iptables/ip6tables command is found in the configuration file
|
||||
|
||||
# echo "iptables/ip6tables commands found in ${config_file}." >&2
|
||||
# echo "Move them in included files (in ${includes_dir})." >&2
|
||||
# exit 1
|
||||
fi
|
||||
|
||||
if is_legacy_config; then
|
||||
# In this mode, we extract all variable definitions
|
||||
# to a temporary file that we can source.
|
||||
# It allow iptables/ip6tables commands to remain in the configuration file
|
||||
# and not interfere with the configuration step.
|
||||
|
||||
tmp_config_file=$(mktemp --tmpdir=/tmp minifirewall.XXX)
|
||||
# get only variable assignments
|
||||
grep -E "^\s*\w+=" "${config_file}" > "${tmp_config_file}"
|
||||
|
||||
source_file_or_error "${tmp_config_file}"
|
||||
rm -f "${tmp_config_file}"
|
||||
else
|
||||
source_file_or_error "${config_file}"
|
||||
fi
|
||||
}
|
||||
include_files() {
|
||||
if [ -d "${includes_dir}" ]; then
|
||||
find ${includes_dir} -type f -readable -not -name '*.*' | sort -h
|
||||
else
|
||||
echo ""
|
||||
fi
|
||||
}
|
||||
source_includes() {
|
||||
if [ -d "${includes_dir}" ]; then
|
||||
for include_file in $(include_files); do
|
||||
source_file_or_error "${include_file}"
|
||||
done
|
||||
fi
|
||||
}
|
||||
filter_config_file() {
|
||||
# Remove lines with:
|
||||
# * empty or only whitespaces
|
||||
# * comments
|
||||
grep --extended-regexp --invert-match -e "^(\s*#)" -e "^\s*$" "${1}"
|
||||
}
|
||||
save_active_configuration() {
|
||||
dest_file=${1}
|
||||
rm -f "${dest_file}"
|
||||
|
||||
echo "# ${config_file}" >> "${dest_file}"
|
||||
filter_config_file "${config_file}" >> "${dest_file}"
|
||||
|
||||
found_include_files=$(include_files)
|
||||
if [ -n "${found_include_files}" ]; then
|
||||
for include_file in ${found_include_files}; do
|
||||
echo "# ${include_file}" >> "${dest_file}"
|
||||
filter_config_file "${include_file}" >> "${dest_file}"
|
||||
done
|
||||
fi
|
||||
}
|
||||
check_active_configuration() {
|
||||
# NRPE-compatible return codes
|
||||
# 0: OK
|
||||
# 1: WARNING
|
||||
# 2: CRITICAL
|
||||
# 3: UNKNOWN
|
||||
rc=0
|
||||
|
||||
if [ -f "${ACTIVE_CONFIG}" ]; then
|
||||
cmp_bin=$(command -v cmp)
|
||||
diff_bin=$(command -v diff)
|
||||
|
||||
if [ -z "${cmp_bin}" ]; then
|
||||
printf "${YELLOW}WARNING: Skipped active configuration check (Can't find cmp(1) command)${RESET}\n"
|
||||
rc=1
|
||||
elif [ -z "${diff_bin}" ]; then
|
||||
printf "${YELLOW}WARNING: Skipped active configuration check (Can't find diff(1) command)${RESET}\n"
|
||||
rc=1
|
||||
else
|
||||
rm -f "${ACTIVE_CONFIG_DIFF}"
|
||||
|
||||
tmp_config_file=$(mktemp --tmpdir=/tmp minifirewall.XXX)
|
||||
save_active_configuration "${tmp_config_file}"
|
||||
|
||||
cmp_result=$(cmp "${ACTIVE_CONFIG}" "${tmp_config_file}" 2>&1)
|
||||
cmp_rc=$?
|
||||
|
||||
if [ ${cmp_rc} -eq 0 ]; then
|
||||
# echo " config has not changed since latest start"
|
||||
printf "${GREEN}OK: Active configuration is up-to-date.${RESET}\n"
|
||||
rc=0
|
||||
elif [ ${cmp_rc} -eq 1 ]; then
|
||||
diff -u "${ACTIVE_CONFIG}" "${tmp_config_file}" > "${ACTIVE_CONFIG_DIFF}"
|
||||
|
||||
printf "${RED}CRITICAL: Active configuration is not up-to-date (minifirewall not restarted after config change?), check %s${RESET}\n" "${ACTIVE_CONFIG_DIFF}"
|
||||
rc=2
|
||||
else
|
||||
printf "${RED}CRITICAL: Error while comparing rules:${RESET}\n"
|
||||
printf "${cmp_result}\n"
|
||||
rc=2
|
||||
fi
|
||||
|
||||
rm -f "${tmp_config_file}"
|
||||
fi
|
||||
else
|
||||
printf "${YELLOW}WARNING: Skipped active configuration check (missing file ${ACTIVE_CONFIG})${RESET}\n"
|
||||
rc=1
|
||||
fi
|
||||
exit ${rc}
|
||||
}
|
||||
check_unpersisted_state() {
|
||||
cmp_bin=$(command -v cmp)
|
||||
diff_bin=$(command -v diff)
|
||||
|
||||
if [ -z "${cmp_bin}" ]; then
|
||||
printf "${YELLOW}skip state comparison (Can't find cmp command)${RESET}\n" >&2
|
||||
elif [ -z "${diff_bin}" ]; then
|
||||
printf "${YELLOW}skip state comparison (Can't find diff command)${RESET}\n" >&2
|
||||
else
|
||||
# store current state (without colors)
|
||||
mkdir -p "$(dirname "${STATE_FILE_CURRENT}")"
|
||||
status_without_numbers | remove_colors > "${STATE_FILE_CURRENT}"
|
||||
|
||||
# clean previous diff file
|
||||
rm -f "${STATE_FILE_DIFF}"
|
||||
|
||||
if [ -f "${STATE_FILE_LATEST}" ]; then
|
||||
cmp_result=$(cmp "${STATE_FILE_LATEST}" "${STATE_FILE_CURRENT}" 2>&1)
|
||||
cmp_rc=$?
|
||||
|
||||
if [ ${cmp_rc} -eq 0 ]; then
|
||||
# echo " rules have not changed since latest start"
|
||||
:
|
||||
elif [ ${cmp_rc} -eq 1 ]; then
|
||||
diff -u "${STATE_FILE_LATEST}" "${STATE_FILE_CURRENT}" > "${STATE_FILE_DIFF}"
|
||||
printf "${YELLOW}WARNING: current state is different than persisted state, check %s${RESET}\n" "${STATE_FILE_DIFF}" >&2
|
||||
else
|
||||
printf "${RED}ERROR comparing rules:${RESET}\n" >&2
|
||||
echo "${cmp_result}" >&2
|
||||
fi
|
||||
fi
|
||||
# cleanup
|
||||
rm -f "${STATE_FILE_CURRENT}"
|
||||
fi
|
||||
}
|
||||
report_state_changes() {
|
||||
cmp_bin=$(command -v cmp)
|
||||
diff_bin=$(command -v diff)
|
||||
|
||||
if [ -z "${cmp_bin}" ]; then
|
||||
printf "${YELLOW}skip state comparison (Can't find cmp command)${RESET}\n" >&2
|
||||
return
|
||||
elif [ -z "${diff_bin}" ]; then
|
||||
printf "${YELLOW}skip state comparison (Can't find diff command)${RESET}\n" >&2
|
||||
else
|
||||
# If there is a known state
|
||||
# let's compare it with the current state
|
||||
if [ -f "${STATE_FILE_LATEST}" ]; then
|
||||
check_unpersisted_state
|
||||
fi
|
||||
|
||||
# Then reset the known state (without colors)
|
||||
mkdir -p "$(dirname "${STATE_FILE_LATEST}")"
|
||||
status_without_numbers | remove_colors > "${STATE_FILE_LATEST}"
|
||||
|
||||
# But if there is a previous known state
|
||||
# let's compare with the new known state
|
||||
if [ -f "${STATE_FILE_PREVIOUS}" ]; then
|
||||
cmp_result=$(cmp "${STATE_FILE_PREVIOUS}" "${STATE_FILE_LATEST}" 2>&1)
|
||||
cmp_rc=$?
|
||||
|
||||
if [ ${cmp_rc} -eq 0 ]; then
|
||||
# echo "Rules have not changed since previous start"
|
||||
:
|
||||
elif [ ${cmp_rc} -eq 1 ]; then
|
||||
diff -u "${STATE_FILE_PREVIOUS}" "${STATE_FILE_LATEST}" > "${STATE_FILE_DIFF}"
|
||||
printf "${YELLOW}INFO: rules have changed since latest start, check %s${RESET}\n" "${STATE_FILE_DIFF}" >&2
|
||||
else
|
||||
printf "${RED}ERROR comparing rules:${RESET}\n" >&2
|
||||
echo "${cmp_result}" >&2
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
start() {
|
||||
syslog_info "starting"
|
||||
printf "${BOLD}${PROGNAME} starting${RESET}\n"
|
||||
|
||||
# Stop and warn if error!
|
||||
set -e
|
||||
trap 'echo "ERROR in minifirewall configuration (fix it now!) or script manipulation (fix yourself)." ' INT TERM EXIT
|
||||
|
||||
trap 'printf "${RED}${PROGNAME} failed : an error occured during startup.${RESET}\n"; syslog_error "failed" ' INT TERM EXIT
|
||||
|
||||
# sysctl network security settings
|
||||
##################################
|
||||
|
||||
# Don't answer to broadcast pings
|
||||
echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts
|
||||
|
||||
# Ignore bogus ICMP responses
|
||||
echo 1 > /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses
|
||||
|
||||
# Disable Source Routing
|
||||
for i in /proc/sys/net/ipv4/conf/*/accept_source_route; do
|
||||
echo 0 > $i
|
||||
done
|
||||
|
||||
# Enable TCP SYN cookies to avoid TCP-SYN-FLOOD attacks
|
||||
# Set 1 to ignore broadcast pings (default)
|
||||
: "${SYSCTL_ICMP_ECHO_IGNORE_BROADCASTS:=1}"
|
||||
# Set 1 to ignore bogus ICMP responses (default)
|
||||
: "${SYSCTL_ICMP_IGNORE_BOGUS_ERROR_RESPONSES:=1}"
|
||||
# Set 0 to disable source routing (default)
|
||||
: "${SYSCTL_ACCEPT_SOURCE_ROUTE:=0}"
|
||||
# Set 1 to enable TCP SYN cookies (default)
|
||||
# cf http://cr.yp.to/syncookies.html
|
||||
echo 1 > /proc/sys/net/ipv4/tcp_syncookies
|
||||
: "${SYSCTL_TCP_SYNCOOKIES:=1}"
|
||||
# Set 0 to disable ICMP redirects (default)
|
||||
: "${SYSCTL_ICMP_REDIRECTS:=0}"
|
||||
# Set 1 to enable Reverse Path filtering (default)
|
||||
# Set 0 if VRRP is used
|
||||
: "${SYSCTL_RP_FILTER:=1}"
|
||||
# Set 1 to log packets with inconsistent address (default)
|
||||
: "${SYSCTL_LOG_MARTIANS:=1}"
|
||||
|
||||
# Disable ICMP redirects
|
||||
for i in /proc/sys/net/ipv4/conf/*/accept_redirects; do
|
||||
echo 0 > $i
|
||||
done
|
||||
if [ "${SYSCTL_ICMP_ECHO_IGNORE_BROADCASTS}" = "1" ] || [ "${SYSCTL_ICMP_ECHO_IGNORE_BROADCASTS}" = "0" ]; then
|
||||
echo "${SYSCTL_ICMP_ECHO_IGNORE_BROADCASTS}" > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts
|
||||
# Apparently not applicable to IPv6
|
||||
else
|
||||
printf "${RED}ERROR: invalid %s value '%s', must be '0' or '1'.\n" "SYSCTL_ICMP_ECHO_IGNORE_BROADCASTS" "${SYSCTL_ICMP_ECHO_IGNORE_BROADCASTS}" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
for i in /proc/sys/net/ipv4/conf/*/send_redirects; do
|
||||
echo 0 > $i
|
||||
done
|
||||
if [ "${SYSCTL_ICMP_IGNORE_BOGUS_ERROR_RESPONSES}" = "1" ] || [ "${SYSCTL_ICMP_IGNORE_BOGUS_ERROR_RESPONSES}" = "0" ]; then
|
||||
echo "${SYSCTL_ICMP_IGNORE_BOGUS_ERROR_RESPONSES}" > /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses
|
||||
# Apparently not applicable to IPv6
|
||||
else
|
||||
printf "${RED}ERROR: invalid %s value '%s', must be '0' or '1'.\n" "SYSCTL_ICMP_IGNORE_BOGUS_ERROR_RESPONSES" "${SYSCTL_ICMP_IGNORE_BOGUS_ERROR_RESPONSES}" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Enable Reverse Path filtering : verify if responses use same network interface
|
||||
for i in /proc/sys/net/ipv4/conf/*/rp_filter; do
|
||||
echo 1 > $i
|
||||
if [ "${SYSCTL_ACCEPT_SOURCE_ROUTE}" = "1" ] || [ "${SYSCTL_ACCEPT_SOURCE_ROUTE}" = "0" ]; then
|
||||
for proc_sys_file in /proc/sys/net/ipv4/conf/*/accept_source_route; do
|
||||
echo "${SYSCTL_ACCEPT_SOURCE_ROUTE}" > "${proc_sys_file}"
|
||||
done
|
||||
if is_ipv6_enabled; then
|
||||
for proc_sys_file in /proc/sys/net/ipv6/conf/*/accept_source_route; do
|
||||
echo "${SYSCTL_ACCEPT_SOURCE_ROUTE}" > "${proc_sys_file}"
|
||||
done
|
||||
fi
|
||||
else
|
||||
printf "${RED}ERROR: invalid %s value '%s', must be '0' or '1'.\n" "SYSCTL_ACCEPT_SOURCE_ROUTE" "${SYSCTL_ACCEPT_SOURCE_ROUTE}" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# log des paquets avec adresse incoherente
|
||||
for i in /proc/sys/net/ipv4/conf/*/log_martians; do
|
||||
echo 1 > $i
|
||||
if [ "${SYSCTL_TCP_SYNCOOKIES}" = "1" ] || [ "${SYSCTL_TCP_SYNCOOKIES}" = "0" ]; then
|
||||
echo "${SYSCTL_TCP_SYNCOOKIES}" > /proc/sys/net/ipv4/tcp_syncookies
|
||||
# Apparently not applicable to IPv6
|
||||
else
|
||||
printf "${RED}ERROR: invalid %s value '%s', must be '0' or '1'.\n" "SYSCTL_TCP_SYNCOOKIES" "${SYSCTL_TCP_SYNCOOKIES}" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if [ "${SYSCTL_ICMP_REDIRECTS}" = "1" ] || [ "${SYSCTL_ICMP_REDIRECTS}" = "0" ]; then
|
||||
for proc_sys_file in /proc/sys/net/ipv4/conf/*/accept_redirects; do
|
||||
echo "${SYSCTL_ICMP_REDIRECTS}" > "${proc_sys_file}"
|
||||
done
|
||||
for proc_sys_file in /proc/sys/net/ipv4/conf/*/send_redirects; do
|
||||
echo "${SYSCTL_ICMP_REDIRECTS}" > "${proc_sys_file}"
|
||||
done
|
||||
if is_ipv6_enabled; then
|
||||
for proc_sys_file in /proc/sys/net/ipv6/conf/*/accept_redirects; do
|
||||
echo "${SYSCTL_ICMP_REDIRECTS}" > "${proc_sys_file}"
|
||||
done
|
||||
fi
|
||||
else
|
||||
printf "${RED}ERROR: invalid %s value '%s', must be '0' or '1'.\n" "SYSCTL_ICMP_REDIRECTS" "${SYSCTL_ICMP_REDIRECTS}" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if [ "${SYSCTL_RP_FILTER}" = "1" ] || [ "${SYSCTL_RP_FILTER}" = "0" ]; then
|
||||
for proc_sys_file in /proc/sys/net/ipv4/conf/*/rp_filter; do
|
||||
echo "${SYSCTL_RP_FILTER}" > "${proc_sys_file}"
|
||||
done
|
||||
# Apparently not applicable to IPv6
|
||||
else
|
||||
printf "${RED}ERROR: invalid %s value '%s', must be '0' or '1'.\n" "SYSCTL_RP_FILTER" "${SYSCTL_RP_FILTER}" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if [ "${SYSCTL_LOG_MARTIANS}" = "1" ] || [ "${SYSCTL_LOG_MARTIANS}" = "0" ]; then
|
||||
for proc_sys_file in /proc/sys/net/ipv4/conf/*/log_martians; do
|
||||
echo "${SYSCTL_LOG_MARTIANS}" > "${proc_sys_file}"
|
||||
done
|
||||
# Apparently not applicable to IPv6
|
||||
else
|
||||
printf "${RED}ERROR: invalid %s value '%s', must be '0' or '1'.\n" "SYSCTL_LOG_MARTIANS" "${SYSCTL_LOG_MARTIANS}" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# IPTables configuration
|
||||
########################
|
||||
|
||||
$IPT -N LOG_DROP
|
||||
$IPT -A LOG_DROP -j LOG --log-prefix '[IPTABLES DROP] : '
|
||||
$IPT -A LOG_DROP -j DROP
|
||||
$IPT -N LOG_ACCEPT
|
||||
$IPT -A LOG_ACCEPT -j LOG --log-prefix '[IPTABLES ACCEPT] : '
|
||||
$IPT -A LOG_ACCEPT -j ACCEPT
|
||||
|
||||
# Configuration
|
||||
oldconfigfile="/etc/firewall.rc"
|
||||
configfile="/etc/default/minifirewall"
|
||||
|
||||
if test -f $oldconfigfile; then
|
||||
echo "$oldconfigfile is deprecated, rename to $configfile" >&2
|
||||
exit 1
|
||||
${IPT} -N LOG_DROP
|
||||
${IPT} -A LOG_DROP -j LOG --log-prefix '[IPTABLES DROP] : '
|
||||
${IPT} -A LOG_DROP -j DROP
|
||||
${IPT} -N LOG_ACCEPT
|
||||
${IPT} -A LOG_ACCEPT -j LOG --log-prefix '[IPTABLES ACCEPT] : '
|
||||
${IPT} -A LOG_ACCEPT -j ACCEPT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -N LOG_DROP
|
||||
${IPT6} -A LOG_DROP -j LOG --log-prefix '[IPTABLES DROP] : '
|
||||
${IPT6} -A LOG_DROP -j DROP
|
||||
${IPT6} -N LOG_ACCEPT
|
||||
${IPT6} -A LOG_ACCEPT -j LOG --log-prefix '[IPTABLES ACCEPT] : '
|
||||
${IPT6} -A LOG_ACCEPT -j ACCEPT
|
||||
fi
|
||||
|
||||
if ! test -f $configfile; then
|
||||
echo "$configfile does not exist" >&2
|
||||
exit 1
|
||||
if is_docker_enabled; then
|
||||
${IPT} -N MINIFW-DOCKER-INPUT-MANUAL
|
||||
fi
|
||||
|
||||
tmpfile=`mktemp`
|
||||
. $configfile 2>$tmpfile >&2
|
||||
if [ -s $tmpfile ]; then
|
||||
echo "$configfile returns standard or error output (see below). Stopping." >&2
|
||||
cat $tmpfile
|
||||
exit 1
|
||||
fi
|
||||
rm $tmpfile
|
||||
# Source additional rules and commands
|
||||
# * from legacy configuration file (/etc/default/minifirewall)
|
||||
# * from configuration directory (/etc/minifirewall.d/*)
|
||||
source_includes
|
||||
|
||||
# IP/ports lists are sorted to have consistent ordering
|
||||
# You can disable this feature by simply commenting the following lines
|
||||
LOOPBACK=$(sort_values ${LOOPBACK})
|
||||
INTLAN=$(sort_values ${INTLAN})
|
||||
TRUSTEDIPS=$(sort_values ${TRUSTEDIPS})
|
||||
PRIVILEGIEDIPS=$(sort_values ${PRIVILEGIEDIPS})
|
||||
SERVICESTCP1p=$(sort_values ${SERVICESTCP1p})
|
||||
SERVICESUDP1p=$(sort_values ${SERVICESUDP1p})
|
||||
SERVICESTCP1=$(sort_values ${SERVICESTCP1})
|
||||
SERVICESUDP1=$(sort_values ${SERVICESUDP1})
|
||||
SERVICESTCP2=$(sort_values ${SERVICESTCP2})
|
||||
SERVICESUDP2=$(sort_values ${SERVICESUDP2})
|
||||
SERVICESTCP3=$(sort_values ${SERVICESTCP3})
|
||||
SERVICESUDP3=$(sort_values ${SERVICESUDP3})
|
||||
DNSSERVEURS=$(sort_values ${DNSSERVEURS})
|
||||
HTTPSITES=$(sort_values ${HTTPSITES})
|
||||
HTTPSSITES=$(sort_values ${HTTPSSITES})
|
||||
FTPSITES=$(sort_values ${FTPSITES})
|
||||
SSHOK=$(sort_values ${SSHOK})
|
||||
SMTPOK=$(sort_values ${SMTPOK})
|
||||
SMTPSECUREOK=$(sort_values ${SMTPSECUREOK})
|
||||
NTPOK=$(sort_values ${NTPOK})
|
||||
PROXYBYPASS=$(sort_values ${PROXYBYPASS})
|
||||
BACKUPSERVERS=$(sort_values ${BACKUPSERVERS})
|
||||
|
||||
# Trusted ip addresses
|
||||
$IPT -N ONLYTRUSTED
|
||||
$IPT -A ONLYTRUSTED -j LOG_DROP
|
||||
for x in $TRUSTEDIPS
|
||||
do
|
||||
$IPT -I ONLYTRUSTED -s $x -j ACCEPT
|
||||
${IPT} -N ONLYTRUSTED
|
||||
${IPT} -A ONLYTRUSTED -j LOG_DROP
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -N ONLYTRUSTED
|
||||
${IPT6} -A ONLYTRUSTED -j LOG_DROP
|
||||
fi
|
||||
for ip in ${TRUSTEDIPS}; do
|
||||
if is_ipv6 ${ip}; then
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -I ONLYTRUSTED -s ${ip} -j ACCEPT
|
||||
fi
|
||||
else
|
||||
${IPT} -I ONLYTRUSTED -s ${ip} -j ACCEPT
|
||||
fi
|
||||
done
|
||||
|
||||
# Privilegied ip addresses
|
||||
# (trusted ip addresses *are* privilegied)
|
||||
$IPT -N ONLYPRIVILEGIED
|
||||
$IPT -A ONLYPRIVILEGIED -j ONLYTRUSTED
|
||||
for x in $PRIVILEGIEDIPS
|
||||
do
|
||||
$IPT -I ONLYPRIVILEGIED -s $x -j ACCEPT
|
||||
${IPT} -N ONLYPRIVILEGIED
|
||||
${IPT} -A ONLYPRIVILEGIED -j ONLYTRUSTED
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -N ONLYPRIVILEGIED
|
||||
${IPT6} -A ONLYPRIVILEGIED -j ONLYTRUSTED
|
||||
fi
|
||||
for ip in ${PRIVILEGIEDIPS}; do
|
||||
if is_ipv6 ${ip}; then
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -I ONLYPRIVILEGIED -s ${ip} -j ACCEPT
|
||||
fi
|
||||
else
|
||||
${IPT} -I ONLYPRIVILEGIED -s ${ip} -j ACCEPT
|
||||
fi
|
||||
done
|
||||
|
||||
# Chain for restrictions (blacklist IPs/ranges)
|
||||
$IPT -N NEEDRESTRICT
|
||||
${IPT} -N NEEDRESTRICT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -N NEEDRESTRICT
|
||||
fi
|
||||
|
||||
# We allow all on loopback interface
|
||||
$IPT -A INPUT -i lo -j ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -A INPUT -i lo -j ACCEPT
|
||||
${IPT} -A INPUT -i lo -j ACCEPT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -i lo -j ACCEPT
|
||||
fi
|
||||
# if OUTPUTDROP
|
||||
$IPT -A OUTPUT -o lo -j ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -A OUTPUT -o lo -j ACCEPT
|
||||
${IPT} -A OUTPUT -o lo -j ACCEPT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A OUTPUT -o lo -j ACCEPT
|
||||
fi
|
||||
|
||||
# We avoid "martians" packets, typical when W32/Blaster virus
|
||||
# attacked windowsupdate.com and DNS was changed to 127.0.0.1
|
||||
# $IPT -t NAT -I PREROUTING -s $LOOPBACK -i ! lo -j DROP
|
||||
$IPT -A INPUT -s $LOOPBACK ! -i lo -j DROP
|
||||
# ${IPT} -t NAT -I PREROUTING -s ${LOOPBACK} -i ! lo -j DROP
|
||||
for IP in ${LOOPBACK}; do
|
||||
if is_ipv6 ${IP}; then
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -s ${IP} ! -i lo -j DROP
|
||||
fi
|
||||
else
|
||||
${IPT} -A INPUT -s ${IP} ! -i lo -j DROP
|
||||
fi
|
||||
done
|
||||
|
||||
if is_docker_enabled; then
|
||||
# WARN: IPv6 not yet supported for Docker rules
|
||||
${IPT} -N MINIFW-DOCKER-TRUSTED
|
||||
${IPT} -A MINIFW-DOCKER-TRUSTED -j DROP
|
||||
|
||||
${IPT} -N MINIFW-DOCKER-PRIVILEGED
|
||||
${IPT} -A MINIFW-DOCKER-PRIVILEGED -j MINIFW-DOCKER-TRUSTED
|
||||
${IPT} -A MINIFW-DOCKER-PRIVILEGED -j RETURN
|
||||
|
||||
${IPT} -N MINIFW-DOCKER-PUB
|
||||
${IPT} -A MINIFW-DOCKER-PUB -j MINIFW-DOCKER-PRIVILEGED
|
||||
${IPT} -A MINIFW-DOCKER-PUB -j RETURN
|
||||
|
||||
# Chain MINIFW-DOCKER-INPUT-MANUAL is created earlier, to allow usage in additionnal config/command files
|
||||
${IPT} -A MINIFW-DOCKER-INPUT-MANUAL -j MINIFW-DOCKER-PUB
|
||||
${IPT} -A MINIFW-DOCKER-INPUT-MANUAL -j RETURN
|
||||
|
||||
# Flush DOCKER-USER if exist, create it if absent
|
||||
if chain_exists 'DOCKER-USER'; then
|
||||
${IPT} -F DOCKER-USER
|
||||
else
|
||||
${IPT} -N DOCKER-USER
|
||||
fi;
|
||||
|
||||
# Pipe new connection through MINIFW-DOCKER-INPUT-MANUAL
|
||||
${IPT} -A DOCKER-USER -i ${INT} -m state --state NEW -j MINIFW-DOCKER-INPUT-MANUAL
|
||||
${IPT} -A DOCKER-USER -j RETURN
|
||||
fi
|
||||
|
||||
|
||||
# Local services restrictions
|
||||
#############################
|
||||
|
||||
# Allow services for $INTLAN (local server or local network)
|
||||
$IPT -A INPUT -s $INTLAN -j ACCEPT
|
||||
|
||||
# Enable protection chain for sensible services
|
||||
for x in $SERVICESTCP1p
|
||||
do
|
||||
$IPT -A INPUT -p tcp --dport $x -j NEEDRESTRICT
|
||||
# Allow services for ${INTLAN} (local server or local network)
|
||||
for IP in ${INTLAN}; do
|
||||
if is_ipv6 ${IP}; then
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -s ${IP} -j ACCEPT
|
||||
fi
|
||||
else
|
||||
${IPT} -A INPUT -s ${IP} -j ACCEPT
|
||||
fi
|
||||
done
|
||||
|
||||
for x in $SERVICESUDP1p
|
||||
do
|
||||
$IPT -A INPUT -p udp --dport $x -j NEEDRESTRICT
|
||||
# Enable protection chain for sensible services
|
||||
for port in ${SERVICESTCP1p}; do
|
||||
${IPT} -A INPUT -p tcp --dport ${port} -j NEEDRESTRICT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -p tcp --dport ${port} -j NEEDRESTRICT
|
||||
fi
|
||||
done
|
||||
|
||||
for port in ${SERVICESUDP1p}; do
|
||||
${IPT} -A INPUT -p udp --dport ${port} -j NEEDRESTRICT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -p udp --dport ${port} -j NEEDRESTRICT
|
||||
fi
|
||||
done
|
||||
|
||||
# Public service
|
||||
for x in $SERVICESTCP1
|
||||
do
|
||||
$IPT -A INPUT -p tcp --dport $x -j ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -A INPUT -p tcp --dport $x -j ACCEPT
|
||||
for port in ${SERVICESTCP1}; do
|
||||
${IPT} -A INPUT -p tcp --dport ${port} -j ACCEPT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -p tcp --dport ${port} -j ACCEPT
|
||||
fi
|
||||
done
|
||||
|
||||
for x in $SERVICESUDP1
|
||||
do
|
||||
$IPT -A INPUT -p udp --dport $x -j ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -A INPUT -p udp --dport $x -j ACCEPT
|
||||
for port in ${SERVICESUDP1}; do
|
||||
${IPT} -A INPUT -p udp --dport ${port} -j ACCEPT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -p udp --dport ${port} -j ACCEPT
|
||||
fi
|
||||
done
|
||||
|
||||
# Privilegied services
|
||||
for x in $SERVICESTCP2
|
||||
do
|
||||
$IPT -A INPUT -p tcp --dport $x -j ONLYPRIVILEGIED
|
||||
for port in ${SERVICESTCP2}; do
|
||||
${IPT} -A INPUT -p tcp --dport ${port} -j ONLYPRIVILEGIED
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -p tcp --dport ${port} -j ONLYPRIVILEGIED
|
||||
fi
|
||||
done
|
||||
|
||||
for x in $SERVICESUDP2
|
||||
do
|
||||
$IPT -A INPUT -p udp --dport $x -j ONLYPRIVILEGIED
|
||||
for port in ${SERVICESUDP2}; do
|
||||
${IPT} -A INPUT -p udp --dport ${port} -j ONLYPRIVILEGIED
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -p udp --dport ${port} -j ONLYPRIVILEGIED
|
||||
fi
|
||||
done
|
||||
|
||||
# Private services
|
||||
for x in $SERVICESTCP3
|
||||
do
|
||||
$IPT -A INPUT -p tcp --dport $x -j ONLYTRUSTED
|
||||
for port in ${SERVICESTCP3}; do
|
||||
${IPT} -A INPUT -p tcp --dport ${port} -j ONLYTRUSTED
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -p tcp --dport ${port} -j ONLYTRUSTED
|
||||
fi
|
||||
done
|
||||
|
||||
for x in $SERVICESUDP3
|
||||
do
|
||||
$IPT -A INPUT -p udp --dport $x -j ONLYTRUSTED
|
||||
for port in ${SERVICESUDP3}; do
|
||||
${IPT} -A INPUT -p udp --dport ${port} -j ONLYTRUSTED
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -p udp --dport ${port} -j ONLYTRUSTED
|
||||
fi
|
||||
done
|
||||
|
||||
|
||||
if is_docker_enabled; then
|
||||
# WARN: IPv6 not yet supported
|
||||
|
||||
# Public services defined in SERVICESTCP1 & SERVICESUDP1
|
||||
for dstport in ${SERVICESTCP1}; do
|
||||
${IPT} -I MINIFW-DOCKER-PUB -p tcp --dport "${dstport}" -j RETURN
|
||||
done
|
||||
|
||||
for dstport in ${SERVICESUDP1}; do
|
||||
${IPT} -I MINIFW-DOCKER-PUB -p udp --dport "${dstport}" -j RETURN
|
||||
done
|
||||
|
||||
# Privileged services (accessible from privileged & trusted IPs)
|
||||
for dstport in ${SERVICESTCP2}; do
|
||||
for srcip in ${PRIVILEGIEDIPS}; do
|
||||
if ! is_ipv6 ${srcip}; then
|
||||
${IPT} -I MINIFW-DOCKER-PRIVILEGED -p tcp -s "${srcip}" --dport "${dstport}" -j RETURN
|
||||
fi
|
||||
done
|
||||
|
||||
for srcip in ${TRUSTEDIPS}; do
|
||||
if ! is_ipv6 ${srcip}; then
|
||||
${IPT} -I MINIFW-DOCKER-PRIVILEGED -p tcp -s "${srcip}" --dport "${dstport}" -j RETURN
|
||||
fi
|
||||
done
|
||||
done
|
||||
|
||||
for dstport in ${SERVICESUDP2}; do
|
||||
for srcip in ${PRIVILEGIEDIPS}; do
|
||||
if ! is_ipv6 ${srcip}; then
|
||||
${IPT} -I MINIFW-DOCKER-PRIVILEGED -p udp -s "${srcip}" --dport "${dstport}" -j RETURN
|
||||
fi
|
||||
done
|
||||
|
||||
for srcip in ${TRUSTEDIPS}; do
|
||||
if ! is_ipv6 ${srcip}; then
|
||||
${IPT} -I MINIFW-DOCKER-PRIVILEGED -p udp -s "${srcip}" --dport "${dstport}" -j RETURN
|
||||
fi
|
||||
done
|
||||
done
|
||||
|
||||
# Trusted services (accessible from trusted IPs)
|
||||
for dstport in ${SERVICESTCP3}; do
|
||||
for srcip in ${TRUSTEDIPS}; do
|
||||
if ! is_ipv6 ${srcip}; then
|
||||
${IPT} -I MINIFW-DOCKER-TRUSTED -p tcp -s "${srcip}" --dport "${dstport}" -j RETURN
|
||||
fi
|
||||
done
|
||||
done
|
||||
|
||||
for dstport in ${SERVICESUDP3}; do
|
||||
for srcip in ${TRUSTEDIPS}; do
|
||||
if ! is_ipv6 ${srcip}; then
|
||||
${IPT} -I MINIFW-DOCKER-TRUSTED -p udp -s "${srcip}" --dport "${dstport}" -j RETURN
|
||||
fi
|
||||
done
|
||||
done
|
||||
fi
|
||||
|
||||
# External services
|
||||
###################
|
||||
|
||||
# DNS authorizations
|
||||
for x in $DNSSERVEURS
|
||||
do
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 53 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
$IPT -A INPUT -p udp --sport 53 --dport $PORTSUSER -s $x -m state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
$IPT -A OUTPUT -o $INT -p udp -d $x --dport 53 --match state --state NEW -j ACCEPT
|
||||
for IP in ${DNSSERVEURS}; do
|
||||
if is_ipv6 ${IP}; then
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -p tcp ! --syn --sport 53 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
${IPT6} -A INPUT -p udp --sport 53 --dport ${PORTSUSER} -s ${IP} -m state --state ESTABLISHED -j ACCEPT
|
||||
${IPT6} -A OUTPUT -o ${INT} -p udp -d ${IP} --dport 53 --match state --state NEW -j ACCEPT
|
||||
fi
|
||||
else
|
||||
${IPT} -A INPUT -p tcp ! --syn --sport 53 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
${IPT} -A INPUT -p udp --sport 53 --dport ${PORTSUSER} -s ${IP} -m state --state ESTABLISHED -j ACCEPT
|
||||
${IPT} -A OUTPUT -o ${INT} -p udp -d ${IP} --dport 53 --match state --state NEW -j ACCEPT
|
||||
fi
|
||||
done
|
||||
|
||||
# HTTP (TCP/80) authorizations
|
||||
for x in $HTTPSITES
|
||||
do
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 80 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
for IP in ${HTTPSITES}; do
|
||||
if is_ipv6 ${IP}; then
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -p tcp ! --syn --sport 80 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
fi
|
||||
else
|
||||
${IPT} -A INPUT -p tcp ! --syn --sport 80 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
fi
|
||||
done
|
||||
|
||||
# HTTPS (TCP/443) authorizations
|
||||
for x in $HTTPSSITES
|
||||
do
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 443 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
for IP in ${HTTPSSITES}; do
|
||||
if is_ipv6 ${IP}; then
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -p tcp ! --syn --sport 443 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
fi
|
||||
else
|
||||
${IPT} -A INPUT -p tcp ! --syn --sport 443 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
fi
|
||||
done
|
||||
|
||||
# FTP (so complex protocol...) authorizations
|
||||
for x in $FTPSITES
|
||||
do
|
||||
for IP in ${FTPSITES}; do
|
||||
if is_ipv6 ${IP}; then
|
||||
if is_ipv6_enabled; then
|
||||
# requests on Control connection
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 21 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
${IPT6} -A INPUT -p tcp ! --syn --sport 21 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
# FTP port-mode on Data Connection
|
||||
$IPT -A INPUT -p tcp --sport 20 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
${IPT6} -A INPUT -p tcp --sport 20 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
# FTP passive-mode on Data Connection
|
||||
# WARNING, this allow all connections on TCP ports > 1024
|
||||
$IPT -A INPUT -p tcp ! --syn --sport $PORTSUSER --dport $PORTSUSER -s $x -j ACCEPT
|
||||
${IPT6} -A INPUT -p tcp ! --syn --sport ${PORTSUSER} --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
fi
|
||||
else
|
||||
# requests on Control connection
|
||||
${IPT} -A INPUT -p tcp ! --syn --sport 21 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
# FTP port-mode on Data Connection
|
||||
${IPT} -A INPUT -p tcp --sport 20 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
# FTP passive-mode on Data Connection
|
||||
# WARNING, this allow all connections on TCP ports > 1024
|
||||
${IPT} -A INPUT -p tcp ! --syn --sport ${PORTSUSER} --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
fi
|
||||
done
|
||||
|
||||
# SSH authorizations
|
||||
for x in $SSHOK
|
||||
do
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 22 -s $x -j ACCEPT
|
||||
for IP in ${SSHOK}; do
|
||||
if is_ipv6 ${IP}; then
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -p tcp ! --syn --sport 22 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
fi
|
||||
else
|
||||
${IPT} -A INPUT -p tcp ! --syn --sport 22 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
fi
|
||||
done
|
||||
|
||||
# SMTP authorizations
|
||||
for x in $SMTPOK
|
||||
do
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 25 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
for IP in ${SMTPOK}; do
|
||||
if is_ipv6 ${IP}; then
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -p tcp ! --syn --sport 25 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
fi
|
||||
else
|
||||
${IPT} -A INPUT -p tcp ! --syn --sport 25 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
fi
|
||||
done
|
||||
|
||||
# secure SMTP (TCP/465 et TCP/587) authorizations
|
||||
for x in $SMTPSECUREOK
|
||||
do
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 465 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 587 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
for IP in ${SMTPSECUREOK}; do
|
||||
if is_ipv6 ${IP}; then
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -p tcp ! --syn --sport 465 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
${IPT6} -A INPUT -p tcp ! --syn --sport 587 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
fi
|
||||
else
|
||||
${IPT} -A INPUT -p tcp ! --syn --sport 465 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
${IPT} -A INPUT -p tcp ! --syn --sport 587 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
fi
|
||||
done
|
||||
|
||||
# NTP authorizations
|
||||
for x in $NTPOK
|
||||
do
|
||||
$IPT -A INPUT -p udp --sport 123 -s $x -j ACCEPT
|
||||
$IPT -A OUTPUT -o $INT -p udp -d $x --dport 123 --match state --state NEW -j ACCEPT
|
||||
for IP in ${NTPOK}; do
|
||||
if is_ipv6 ${IP}; then
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -p udp --sport 123 -s ${IP} -j ACCEPT
|
||||
${IPT6} -A OUTPUT -o ${INT} -p udp -d ${IP} --dport 123 --match state --state NEW -j ACCEPT
|
||||
fi
|
||||
else
|
||||
${IPT} -A INPUT -p udp --sport 123 -s ${IP} -j ACCEPT
|
||||
${IPT} -A OUTPUT -o ${INT} -p udp -d ${IP} --dport 123 --match state --state NEW -j ACCEPT
|
||||
fi
|
||||
done
|
||||
|
||||
# Proxy (Squid)
|
||||
if is_proxy_enabled; then
|
||||
# WARN: Squid only listen on IPv4 yet
|
||||
# TODO: verify that the pattern used for IPv4 is relevant with IPv6
|
||||
|
||||
${IPT} -t nat -A OUTPUT -p tcp --dport 80 -m owner --uid-owner proxy -j ACCEPT
|
||||
for dstip in ${PROXYBYPASS}; do
|
||||
if ! is_ipv6 ${dstip}; then
|
||||
${IPT} -t nat -A OUTPUT -p tcp --dport 80 -d "${dstip}" -j ACCEPT
|
||||
fi
|
||||
done
|
||||
${IPT} -t nat -A OUTPUT -p tcp --dport 80 -j REDIRECT --to-port "${PROXYPORT:-'8888'}"
|
||||
fi
|
||||
|
||||
# Output for backup servers
|
||||
for server in ${BACKUPSERVERS}; do
|
||||
server_port=$(echo "${server}" | awk -F : '{print $(NF)}')
|
||||
server_ip=$(echo "${server}" | sed -e "s/:${server_port}$//")
|
||||
|
||||
if [ -n "${server_ip}" ] && [ -n "${server_port}" ]; then
|
||||
if is_ipv6 ${server_ip}; then
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -p tcp --sport "${server_port}" --dport 1024:65535 -s "${server_ip}" -m state --state ESTABLISHED -j ACCEPT
|
||||
fi
|
||||
else
|
||||
${IPT} -A INPUT -p tcp --sport "${server_port}" --dport 1024:65535 -s "${server_ip}" -m state --state ESTABLISHED -j ACCEPT
|
||||
fi
|
||||
else
|
||||
printf "${RED}ERROR: unrecognized syntax for BACKUPSERVERS '%s\`. Use space-separated IP:PORT tuples.${RESET}\n" "${server}" >&2
|
||||
exit 1
|
||||
fi
|
||||
done
|
||||
|
||||
# Always allow ICMP
|
||||
$IPT -A INPUT -p icmp -j ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -A INPUT -p icmpv6 -j ACCEPT
|
||||
${IPT} -A INPUT -p icmp -j ACCEPT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -p icmpv6 -j ACCEPT
|
||||
fi
|
||||
|
||||
# source config file for remaining commands
|
||||
if is_legacy_config; then
|
||||
source_file_or_error "${config_file}"
|
||||
fi
|
||||
|
||||
# IPTables policy
|
||||
#################
|
||||
|
||||
# by default DROP INPUT packets
|
||||
$IPT -P INPUT DROP
|
||||
[ "$IPV6" != "off" ] && $IPT6 -P INPUT DROP
|
||||
${IPT} -P INPUT DROP
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -P INPUT DROP
|
||||
fi
|
||||
|
||||
# by default, no FORWARING (deprecated for Virtual Machines)
|
||||
# by default, no FORWARDING (deprecated for Virtual Machines)
|
||||
#echo 0 > /proc/sys/net/ipv4/ip_forward
|
||||
#$IPT -P FORWARD DROP
|
||||
#$IPT6 -P FORWARD DROP
|
||||
#${IPT} -P FORWARD DROP
|
||||
#${IPT6} -P FORWARD DROP
|
||||
|
||||
# by default allow OUTPUT packets... but drop UDP packets (see OUTPUTDROP to drop OUTPUT packets)
|
||||
$IPT -P OUTPUT ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -P OUTPUT ACCEPT
|
||||
$IPT -A OUTPUT -o $INT -p udp --dport 33434:33523 --match state --state NEW -j ACCEPT
|
||||
$IPT -A OUTPUT -p udp --match state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
$IPT -A OUTPUT -p udp -j DROP
|
||||
[ "$IPV6" != "off" ] && $IPT6 -A OUTPUT -o $INT -p udp --dport 33434:33523 --match state --state NEW -j ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -A OUTPUT -p udp --match state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -A OUTPUT -p udp -j DROP
|
||||
${IPT} -P OUTPUT ACCEPT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -P OUTPUT ACCEPT
|
||||
fi
|
||||
|
||||
${IPT} -A OUTPUT -o ${INT} -p udp --dport 33434:33523 --match state --state NEW -j ACCEPT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A OUTPUT -o ${INT} -p udp --dport 33434:33523 --match state --state NEW -j ACCEPT
|
||||
fi
|
||||
|
||||
${IPT} -A OUTPUT -p udp --match state --state ESTABLISHED -j ACCEPT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A OUTPUT -p udp --match state --state ESTABLISHED -j ACCEPT
|
||||
fi
|
||||
|
||||
${IPT} -A OUTPUT -p udp -j DROP
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A OUTPUT -p udp -j DROP
|
||||
fi
|
||||
|
||||
# Finish
|
||||
########################
|
||||
|
||||
trap - INT TERM EXIT
|
||||
|
||||
echo "...starting IPTables rules is now finish : OK"
|
||||
syslog_info "started"
|
||||
printf "${GREEN}${BOLD}${PROGNAME} started${RESET}\n"
|
||||
|
||||
# No need to exit on error anymore
|
||||
set +e
|
||||
|
||||
# save active configuration
|
||||
save_active_configuration "${ACTIVE_CONFIG}"
|
||||
|
||||
report_state_changes
|
||||
}
|
||||
|
||||
stop() {
|
||||
syslog_info "stopping"
|
||||
printf "${BOLD}${PROGNAME} stopping${RESET}\n"
|
||||
|
||||
printf "${BLUE}flushing all rules and accepting everything${RESET}\n"
|
||||
|
||||
# Save previous state (without colors)
|
||||
mkdir -p "$(dirname "${STATE_FILE_PREVIOUS}")"
|
||||
status_without_numbers | remove_colors > "${STATE_FILE_PREVIOUS}"
|
||||
|
||||
# Delete all rules
|
||||
${IPT} -F INPUT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -F INPUT
|
||||
fi
|
||||
|
||||
${IPT} -F OUTPUT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -F OUTPUT
|
||||
fi
|
||||
|
||||
${IPT} -F LOG_DROP
|
||||
${IPT} -F LOG_ACCEPT
|
||||
${IPT} -F ONLYTRUSTED
|
||||
${IPT} -F ONLYPRIVILEGIED
|
||||
${IPT} -F NEEDRESTRICT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -F LOG_DROP
|
||||
${IPT6} -F LOG_ACCEPT
|
||||
${IPT6} -F ONLYTRUSTED
|
||||
${IPT6} -F ONLYPRIVILEGIED
|
||||
${IPT6} -F NEEDRESTRICT
|
||||
fi
|
||||
|
||||
${IPT} -t mangle -F
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -t mangle -F
|
||||
fi
|
||||
|
||||
if is_docker_enabled; then
|
||||
# WARN: IPv6 not yet supported
|
||||
|
||||
${IPT} -F DOCKER-USER
|
||||
${IPT} -A DOCKER-USER -j RETURN
|
||||
|
||||
${IPT} -F MINIFW-DOCKER-INPUT-MANUAL
|
||||
${IPT} -X MINIFW-DOCKER-INPUT-MANUAL
|
||||
${IPT} -F MINIFW-DOCKER-PUB
|
||||
${IPT} -X MINIFW-DOCKER-PUB
|
||||
${IPT} -F MINIFW-DOCKER-PRIVILEGED
|
||||
${IPT} -X MINIFW-DOCKER-PRIVILEGED
|
||||
${IPT} -F MINIFW-DOCKER-TRUSTED
|
||||
${IPT} -X MINIFW-DOCKER-TRUSTED
|
||||
else
|
||||
${IPT} -t nat -F
|
||||
fi
|
||||
|
||||
# Accept all
|
||||
${IPT} -P INPUT ACCEPT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -P INPUT ACCEPT
|
||||
fi
|
||||
|
||||
${IPT} -P OUTPUT ACCEPT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -P OUTPUT ACCEPT
|
||||
fi
|
||||
#${IPT} -P FORWARD ACCEPT
|
||||
#${IPT} -t nat -P PREROUTING ACCEPT
|
||||
#${IPT} -t nat -P POSTROUTING ACCEPT
|
||||
|
||||
# Delete non-standard chains
|
||||
${IPT} -X LOG_DROP
|
||||
${IPT} -X LOG_ACCEPT
|
||||
${IPT} -X ONLYPRIVILEGIED
|
||||
${IPT} -X ONLYTRUSTED
|
||||
${IPT} -X NEEDRESTRICT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -X LOG_DROP
|
||||
${IPT6} -X LOG_ACCEPT
|
||||
${IPT6} -X ONLYPRIVILEGIED
|
||||
${IPT6} -X ONLYTRUSTED
|
||||
${IPT6} -X NEEDRESTRICT
|
||||
fi
|
||||
|
||||
rm -f "${STATE_FILE_LATEST}" "${STATE_FILE_CURRENT}" "${ACTIVE_CONFIG}"
|
||||
|
||||
syslog_info "stopped"
|
||||
printf "${GREEN}${BOLD}${PROGNAME} stopped${RESET}\n"
|
||||
}
|
||||
|
||||
status() {
|
||||
printf "${BLUE}#### iptables --list ###############################${RESET}\n"
|
||||
${IPT} --list --numeric --verbose --line-numbers
|
||||
printf "\n${BLUE}#### iptables --table nat --list ###################${RESET}\n"
|
||||
${IPT} --table nat --list --numeric --verbose --line-numbers
|
||||
printf "\n${BLUE}#### iptables --table mangle --list ################${RESET}\n"
|
||||
${IPT} --table mangle --list --numeric --verbose --line-numbers
|
||||
if is_ipv6_enabled; then
|
||||
printf "\n${BLUE}#### ip6tables --list ##############################${RESET}\n"
|
||||
${IPT6} --list --numeric --verbose --line-numbers
|
||||
printf "\n${BLUE}#### ip6tables --table mangle --list ###############${RESET}\n"
|
||||
${IPT6} --table mangle --list --numeric --verbose --line-numbers
|
||||
fi
|
||||
}
|
||||
|
||||
status_without_numbers() {
|
||||
printf "${BLUE}#### iptables --list ###############################${RESET}\n"
|
||||
${IPT} --list --numeric
|
||||
printf "\n${BLUE}#### iptables --table nat --list ###################${RESET}\n"
|
||||
${IPT} --table nat --list --numeric
|
||||
printf "\n${BLUE}#### iptables --table mangle --list ################${RESET}\n"
|
||||
${IPT} --table mangle --list --numeric
|
||||
if is_ipv6_enabled; then
|
||||
printf "\n${BLUE}#### ip6tables --list ##############################${RESET}\n"
|
||||
${IPT6} --list --numeric
|
||||
printf "\n${BLUE}#### ip6tables --table mangle --list ###############${RESET}\n"
|
||||
${IPT6} --table mangle --list --numeric
|
||||
fi
|
||||
}
|
||||
|
||||
reset() {
|
||||
syslog_info "resetting"
|
||||
printf "${BOLD}${PROGNAME} resetting${RESET}\n"
|
||||
|
||||
${IPT} -Z
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -Z
|
||||
fi
|
||||
|
||||
${IPT} -t nat -Z
|
||||
|
||||
${IPT} -t mangle -Z
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -t mangle -Z
|
||||
fi
|
||||
|
||||
syslog_info "reset"
|
||||
printf "${GREEN}${BOLD}${PROGNAME} reset${RESET}\n"
|
||||
}
|
||||
|
||||
safety_timer() {
|
||||
if [ "${SAFETY_TIMER}" -le "0" ] || [ "${SAFETY_TIMER}" -gt "3600" ]; then
|
||||
syslog_info "safety timer value '${SAFETY_TIMER}' is out of range (1 < 3600), reverted to default value of '30'."
|
||||
SAFETY_TIMER=30
|
||||
readonly SAFETY_TIMER
|
||||
fi
|
||||
echo "${SAFETY_TIMER}"
|
||||
}
|
||||
|
||||
stop_if_locked() {
|
||||
count=0
|
||||
|
||||
while [ "${count}" -lt "$(safety_timer)" ] && [ -f "${SAFETY_LOCK}" ]; do
|
||||
count=$(( count + 1 ))
|
||||
sleep 1
|
||||
done
|
||||
|
||||
if [ -f "${SAFETY_LOCK}" ]; then
|
||||
syslog_error "safety lock is still here after $(safety_timer) seconds, we need to stop"
|
||||
|
||||
stop
|
||||
|
||||
syslog_info "remove safety lock"
|
||||
rm -f "${SAFETY_LOCK}"
|
||||
else
|
||||
syslog_info "safety lock is not there anymore, life goes on"
|
||||
fi
|
||||
}
|
||||
|
||||
safe_start() {
|
||||
# start the firewall
|
||||
start
|
||||
|
||||
# create the lock file
|
||||
syslog_info "add safety lock"
|
||||
touch "${SAFETY_LOCK}"
|
||||
|
||||
# run the special background command
|
||||
nohup "${0}" stop-if-locked > "${SAFETY_OUTPUT}" 2>&1 &
|
||||
|
||||
if is_interactive; then
|
||||
syslog_info "safe-restart in interactive mode ; if safety lock (${SAFETY_LOCK}) is not removed in the next $(safety_timer) seconds, minifirewall will be stopped."
|
||||
# Ask for input
|
||||
confirm_default="I'm locked out, please stop the firewall"
|
||||
# printf "If the restart has locked you out you might see this but you shouldn't be able to type anything.\n"
|
||||
printf "Minifirewall will be stopped in $(safety_timer) seconds if you do nothing.\n"
|
||||
printf "Remove \`${SAFETY_LOCK}' or type anything to keep minifirewall started: "
|
||||
|
||||
read -r confirm
|
||||
|
||||
if [ ! -f "${SAFETY_LOCK}" ]; then
|
||||
printf "${YELLOW}Safety lock is not there anymore.\nYou've probably been rescued by the safety checks.\n${BOLD}Minifirewall is probably stopped.${RESET}\n"
|
||||
elif [ "${confirm}" != "${confirm_default}" ]; then
|
||||
rm -f "${SAFETY_LOCK}" && printf "${GREEN}OK. Safety lock is removed.${RESET}\n"
|
||||
fi
|
||||
else
|
||||
syslog_info "safe-restart in non-interactive mode ; if safety lock (${SAFETY_LOCK}) is not removed in the next $(safety_timer) seconds, minifirewall will be stopped."
|
||||
fi
|
||||
}
|
||||
|
||||
show_version() {
|
||||
cat <<END
|
||||
${PROGNAME} version ${VERSION}
|
||||
|
||||
Copyright 2007-2023 Evolix <info@evolix.fr>.
|
||||
|
||||
${PROGNAME} comes with ABSOLUTELY NO WARRANTY.
|
||||
This program is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU General Public License
|
||||
as published by the Free Software Foundation; either version 3
|
||||
of the License.
|
||||
END
|
||||
}
|
||||
show_help() {
|
||||
cat <<END
|
||||
${PROGNAME} ${DESC}
|
||||
|
||||
END
|
||||
show_usage
|
||||
}
|
||||
show_usage() {
|
||||
cat <<END
|
||||
Usage: ${PROGNAME} [COMMAND]
|
||||
|
||||
Commands
|
||||
start Start minifirewall
|
||||
safe-start Start minifirewall, with baground safety checks
|
||||
stop Stop minifirewall
|
||||
restart Stop then start minifirewall
|
||||
safe-restart Restart minifirewall, with background safety checks
|
||||
status Print minifirewall status
|
||||
reset Reset iptables tables
|
||||
check-active-config Check if active config is up-to-date with stored config
|
||||
version Print version and exit
|
||||
help Print this message and exit
|
||||
END
|
||||
}
|
||||
|
||||
case "${1:-''}" in
|
||||
start)
|
||||
source_configuration
|
||||
check_unpersisted_state
|
||||
|
||||
start
|
||||
;;
|
||||
|
||||
safe-start)
|
||||
source_configuration
|
||||
check_unpersisted_state
|
||||
|
||||
safe_start
|
||||
;;
|
||||
|
||||
stop)
|
||||
source_configuration
|
||||
check_unpersisted_state
|
||||
|
||||
echo "Flush all rules and accept everything..."
|
||||
|
||||
# Delete all rules
|
||||
$IPT -F INPUT
|
||||
$IPT -F OUTPUT
|
||||
$IPT -F LOG_DROP
|
||||
$IPT -F LOG_ACCEPT
|
||||
$IPT -F ONLYTRUSTED
|
||||
$IPT -F ONLYPRIVILEGIED
|
||||
$IPT -F NEEDRESTRICT
|
||||
$IPT -t nat -F
|
||||
$IPT -t mangle -F
|
||||
[ "$IPV6" != "off" ] && $IPT6 -F INPUT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -F OUTPUT
|
||||
|
||||
# Accept all
|
||||
$IPT -P INPUT ACCEPT
|
||||
$IPT -P OUTPUT ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -P INPUT ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -P OUTPUT ACCEPT
|
||||
#$IPT -P FORWARD ACCEPT
|
||||
#$IPT -t nat -P PREROUTING ACCEPT
|
||||
#$IPT -t nat -P POSTROUTING ACCEPT
|
||||
|
||||
# Delete non-standard chains
|
||||
$IPT -X LOG_DROP
|
||||
$IPT -X LOG_ACCEPT
|
||||
$IPT -X ONLYPRIVILEGIED
|
||||
$IPT -X ONLYTRUSTED
|
||||
$IPT -X NEEDRESTRICT
|
||||
|
||||
echo "...flushing IPTables rules is now finish : OK"
|
||||
stop
|
||||
;;
|
||||
|
||||
status)
|
||||
source_configuration
|
||||
check_unpersisted_state
|
||||
|
||||
$IPT -L -n -v --line-numbers
|
||||
$IPT -t nat -L -n -v --line-numbers
|
||||
$IPT -t mangle -L -n -v --line-numbers
|
||||
$IPT6 -L -n -v --line-numbers
|
||||
$IPT6 -t mangle -L -n -v --line-numbers
|
||||
status
|
||||
;;
|
||||
|
||||
reset)
|
||||
source_configuration
|
||||
check_unpersisted_state
|
||||
|
||||
echo "Reset all IPTables counters..."
|
||||
|
||||
$IPT -Z
|
||||
$IPT -t nat -Z
|
||||
$IPT -t mangle -Z
|
||||
[ "$IPV6" != "off" ] && $IPT6 -Z
|
||||
[ "$IPV6" != "off" ] && $IPT6 -t mangle -Z
|
||||
|
||||
echo "...reseting IPTables counters is now finish : OK"
|
||||
reset
|
||||
;;
|
||||
|
||||
restart)
|
||||
source_configuration
|
||||
check_unpersisted_state
|
||||
|
||||
$0 stop
|
||||
$0 start
|
||||
stop
|
||||
start
|
||||
;;
|
||||
|
||||
safe-restart)
|
||||
source_configuration
|
||||
check_unpersisted_state
|
||||
|
||||
stop
|
||||
safe_start
|
||||
;;
|
||||
|
||||
stop-if-locked)
|
||||
source_configuration
|
||||
|
||||
stop_if_locked
|
||||
;;
|
||||
|
||||
check-active-config)
|
||||
check_active_configuration
|
||||
;;
|
||||
|
||||
version)
|
||||
show_version
|
||||
;;
|
||||
|
||||
help)
|
||||
show_help
|
||||
;;
|
||||
|
||||
*)
|
||||
|
||||
echo "Usage: $0 {start|stop|restart|status|reset|squid}"
|
||||
exit 1
|
||||
printf "%s: %s: unknown option\n" "${PROGNAME}" "${1}"
|
||||
show_usage
|
||||
exit 128
|
||||
;;
|
||||
esac
|
||||
|
||||
exit 0
|
||||
|
||||
|
|
|
@ -1,96 +1,136 @@
|
|||
# Configuration for minifirewall : https://forge.evolix.org/projects/minifirewall
|
||||
# For fun, we keep last change from first CVS repository:
|
||||
# version 0.1 - 12 juillet 2007 $Id: firewall.rc,v 1.2 2007/07/12 19:08:59 reg Exp $
|
||||
# Configuration for minifirewall : https://gitea.evolix.org/evolix/minifirewall
|
||||
# Version 23.07
|
||||
# shellcheck shell=sh disable=SC2034
|
||||
|
||||
# Main interface
|
||||
INT='eth0'
|
||||
|
||||
# IPv6
|
||||
IPV6=on
|
||||
IPV6='on'
|
||||
|
||||
# Trusted IPv4 local network
|
||||
# ...will be often IP/32 if you don't trust anything
|
||||
INTLAN='192.168.0.2/32'
|
||||
# Docker Mode
|
||||
# Changes the behaviour of minifirewall to not break the containers' network
|
||||
# For instance, turning it on will disable nat table purge
|
||||
# Also, we'll add the DOCKER-USER chain, in iptables
|
||||
#
|
||||
# WARNING : If the port mapping is different between the host and the container
|
||||
# (ie: Listen on :8090 on host, but :8080 in container)
|
||||
# then you need to give the port used inside the container
|
||||
DOCKER='off'
|
||||
|
||||
# Trusted IPv4 addresses for private and semi-public services
|
||||
TRUSTEDIPS='62.212.121.90 88.179.18.233 31.170.8.4 31.170.9.129'
|
||||
# Trusted local network
|
||||
# ...will be often IPv4/32 or IPv6/128 if you don't trust anything
|
||||
INTLAN='192.0.2.1/32 2001:db8::1/128'
|
||||
|
||||
# Privilegied IPv4 addresses for semi-public services
|
||||
# Trusted IP addresses for private and semi-public services
|
||||
# TODO: add all our IPv6 adresses
|
||||
TRUSTEDIPS='31.170.9.129 2a01:9500:37:129::/64 31.170.8.4 2a01:9500::fada 82.65.34.85 2a01:e0a:571:2a10::1 54.37.106.210 51.210.84.146'
|
||||
|
||||
# Privilegied IP addresses for semi-public services
|
||||
# (no need to add again TRUSTEDIPS)
|
||||
PRIVILEGIEDIPS=''
|
||||
|
||||
|
||||
# Local services IPv4/IPv6 restrictions
|
||||
# Local services IP restrictions
|
||||
#######################################
|
||||
|
||||
# Protected services
|
||||
# (add also in Public services if needed)
|
||||
SERVICESTCP1p='22'
|
||||
SERVICESTCP1p='22222'
|
||||
SERVICESUDP1p=''
|
||||
|
||||
# Public services (IPv4/IPv6)
|
||||
SERVICESTCP1='25 53 443 993 995 2222'
|
||||
SERVICESUDP1='53'
|
||||
SERVICESTCP1='22222'
|
||||
SERVICESUDP1=''
|
||||
|
||||
# Semi-public services (IPv4)
|
||||
SERVICESTCP2='20 21 22 80 110 143'
|
||||
SERVICESTCP2='22'
|
||||
SERVICESUDP2=''
|
||||
|
||||
# Private services (IPv4)
|
||||
SERVICESTCP3='5666'
|
||||
SERVICESUDP3=''
|
||||
|
||||
# Standard output IPv4 access restrictions
|
||||
|
||||
# Standard output IPv4/IPv6 access restrictions
|
||||
##########################################
|
||||
|
||||
# DNS authorizations
|
||||
# (if you have local DNS server, set 0.0.0.0/0)
|
||||
DNSSERVEURS='0.0.0.0/0'
|
||||
DNSSERVEURS='0.0.0.0/0 ::/0'
|
||||
|
||||
# HTTP authorizations
|
||||
# (you can use DNS names but set cron to reload minifirewall regularly)
|
||||
# (if you have HTTP proxy, set 0.0.0.0/0)
|
||||
HTTPSITES='security.debian.org pub.evolix.net security-cdn.debian.org volatile.debian.org mirror.evolix.org backports.debian.org hwraid.le-vert.net antispam00.evolix.org spamassassin.apache.org sa-update.space-pro.be sa-update.secnap.net www.sa-update.pccc.com sa-update.dnswl.org ocsp.int-x3.letsencrypt.org'
|
||||
HTTPSITES='0.0.0.0/0 ::/0'
|
||||
|
||||
# HTTPS authorizations
|
||||
HTTPSSITES='0.0.0.0/0'
|
||||
HTTPSSITES='0.0.0.0/0 ::/0'
|
||||
|
||||
# FTP authorizations
|
||||
FTPSITES=''
|
||||
|
||||
# SSH authorizations
|
||||
SSHOK='0.0.0.0/0'
|
||||
SSHOK='0.0.0.0/0 ::/0'
|
||||
|
||||
# SMTP authorizations
|
||||
SMTPOK='0.0.0.0/0'
|
||||
SMTPOK='0.0.0.0/0 ::/0'
|
||||
|
||||
# SMTP secure authorizations (ports TCP/465 and TCP/587)
|
||||
SMTPSECUREOK=''
|
||||
|
||||
# NTP authorizations
|
||||
NTPOK='0.0.0.0/0'
|
||||
NTPOK='0.0.0.0/0 ::/0'
|
||||
|
||||
# Proxy (Squid)
|
||||
PROXY='off'
|
||||
# (proxy port)
|
||||
PROXYPORT='8888'
|
||||
# (destinations that bypass the proxy)
|
||||
PROXYBYPASS="${INTLAN} 127.0.0.0/8 ::1/128"
|
||||
|
||||
# Backup servers
|
||||
# (add IP:PORT for each one, example: '192.168.10.1:1234 192.168.10.2:5678')
|
||||
BACKUPSERVERS=''
|
||||
|
||||
|
||||
# IPv6 Specific rules
|
||||
# Includes
|
||||
#####################
|
||||
|
||||
# Example: allow input HTTP/HTTPS/SMTP/DNS traffic
|
||||
/sbin/ip6tables -A INPUT -i $INT -p tcp --sport 80 --match state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
/sbin/ip6tables -A INPUT -i $INT -p tcp --sport 443 --match state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
/sbin/ip6tables -A INPUT -i $INT -p tcp --sport 25 --match state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
/sbin/ip6tables -A INPUT -i $INT -p udp --sport 53 --match state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
/sbin/ip6tables -A INPUT -i $INT -p tcp --sport 53 --match state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
# Files in /etc/minifirewall.d/* (without "." in name)
|
||||
# are automatically included in alphanumerical order.
|
||||
#
|
||||
# Within included files, you can use those helper functions :
|
||||
# * is_ipv6_enabled: returns true if IPv6 is enabled, or false
|
||||
# * is_docker_enabled: returns true if Docker mode is eabled, or false
|
||||
# * is_proxy_enabled: returns true if Proxy mode is enabled , or false
|
||||
|
||||
# Example: allow output DNS, NTP and traceroute traffic
|
||||
/sbin/ip6tables -A OUTPUT -o $INT -p udp --dport 53 --match state --state NEW -j ACCEPT
|
||||
/sbin/ip6tables -A OUTPUT -o $INT -p udp --dport 123 --match state --state NEW -j ACCEPT
|
||||
#/sbin/ip6tables -A OUTPUT -o $INT -p udp --dport 33434:33523 --match state --state NEW -j ACCEPT
|
||||
|
||||
# Example: allow DHCPv6
|
||||
/sbin/ip6tables -A INPUT -i $INT -p udp --dport 546 -d fe80::/64 -j ACCEPT
|
||||
/sbin/ip6tables -A OUTPUT -o $INT -p udp --dport 547 -j ACCEPT
|
||||
# Custom sysctl values (advanced)
|
||||
#################################
|
||||
|
||||
# IPv4 Specific rules
|
||||
#####################
|
||||
# In most cases, the default values set by minifirewall are good.
|
||||
# If you really know what you are doing,
|
||||
# you can uncomment some lines and customize the values.
|
||||
|
||||
# /sbin/iptables ...
|
||||
# Set 1 to ignore broadcast pings (default)
|
||||
# SYSCTL_ICMP_ECHO_IGNORE_BROADCASTS='1'
|
||||
|
||||
# Set 1 to ignore bogus ICMP responses (default)
|
||||
# SYSCTL_ICMP_IGNORE_BOGUS_ERROR_RESPONSES='1'
|
||||
|
||||
# Set 0 to disable source routing (default)
|
||||
# SYSCTL_ACCEPT_SOURCE_ROUTE='0'
|
||||
|
||||
# Set 1 to enable TCP SYN cookies (default)
|
||||
# SYSCTL_TCP_SYNCOOKIES='1'
|
||||
|
||||
# Set 0 to disable ICMP redirects (default)
|
||||
# SYSCTL_ICMP_REDIRECTS='0'
|
||||
|
||||
# Set 1 to enable Reverse Path filtering (default)
|
||||
# Set 0 if VRRP is used
|
||||
# SYSCTL_RP_FILTER='1'
|
||||
|
||||
# Set 1 to log packets with inconsistent address (default)
|
||||
# SYSCTL_LOG_MARTIANS='1'
|
||||
|
|
136
tests/minifirewall-legacy.conf
Normal file
136
tests/minifirewall-legacy.conf
Normal file
|
@ -0,0 +1,136 @@
|
|||
# Fichier de configuration
|
||||
# pour minifirewall
|
||||
|
||||
# version 0.1 - 12 juillet 2007 $Id: firewall.rc,v 1.2 2007/07/12 19:08:59 reg Exp $
|
||||
|
||||
# Interface concernee
|
||||
INT='eth0.11'
|
||||
|
||||
IPV6=on
|
||||
|
||||
# IP associee (plus utilisee dans les scripts)
|
||||
# INTIP='192.168.0.2'
|
||||
# reseau beneficiant d'acces privilegies
|
||||
# (sera souvent IP/32)
|
||||
INTLAN='192.0.2.1/32'
|
||||
|
||||
# trusted ip addresses
|
||||
TRUSTEDIPS='62.212.121.90 62.212.111.216 88.179.18.233 85.118.59.4 85.118.59.50 31.170.8.4 31.170.9.129 82.65.34.85 54.37.106.210 51.210.84.146'
|
||||
|
||||
# privilegied ip addresses
|
||||
# (trusted ip addresses *are* privilegied)
|
||||
PRIVILEGIEDIPS='80.14.117.69 31.170.8.6 31.170.11.167 31.170.11.167 31.170.8.7 31.170.8.249 31.170.8.76 31.170.8.222 80.245.23.179 51.38.233.228'
|
||||
|
||||
# Services "protected"
|
||||
# a mettre aussi en public si necessaire !!
|
||||
SERVICESTCP1p=''
|
||||
SERVICESUDP1p=''
|
||||
|
||||
# Services "publics"
|
||||
SERVICESTCP1='21 80 443 2222'
|
||||
SERVICESUDP1=''
|
||||
|
||||
# Services "semi-publics"
|
||||
SERVICESTCP2='20 22 25'
|
||||
SERVICESUDP2=''
|
||||
|
||||
# Services "prives"
|
||||
SERVICESTCP3='5666'
|
||||
SERVICESUDP3=''
|
||||
|
||||
################### SORTANTS
|
||||
|
||||
# DNS
|
||||
# (Attention, si un serveur DNS est installe en local
|
||||
# mettre 0.0.0.0/0)
|
||||
DNSSERVEURS='0.0.0.0/0'
|
||||
|
||||
# HTTP : security.d.o x3, zidane, modsecurity www.debian.org
|
||||
# /!\ Possibilite d'utiliser des noms de domaines
|
||||
# mais il est conseiller de placer un rechargement
|
||||
# du minifirewall en crontab
|
||||
# (Attention, si un proxy HTTP est installe en local
|
||||
# mettre 0.0.0.0/0)
|
||||
HTTPSITES='0.0.0.0/0'
|
||||
|
||||
# HTTPS
|
||||
# /!\ Possibilite d'utiliser des noms de domaines
|
||||
# mais il est conseiller de placer un rechargement
|
||||
# du minifirewall en crontab
|
||||
HTTPSSITES='0.0.0.0/0'
|
||||
|
||||
# FTP
|
||||
FTPSITES='0.0.0.0/0'
|
||||
|
||||
# SSH
|
||||
SSHOK='0.0.0.0/0'
|
||||
|
||||
# SMTP
|
||||
SMTPOK='0.0.0.0/0'
|
||||
|
||||
# SMTP secure (port 465 et 587)
|
||||
SMTPSECUREOK='0.0.0.0/0'
|
||||
|
||||
# NTP
|
||||
NTPOK='0.0.0.0/0'
|
||||
|
||||
################### IPv6 Specific rules
|
||||
# /sbin/ip6tables ...
|
||||
|
||||
# Allow HTTP/HTTPS/SMTP traffic
|
||||
/sbin/ip6tables -A INPUT -i $INT -p tcp --sport 80 --match state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
/sbin/ip6tables -A INPUT -i $INT -p tcp --sport 443 --match state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
/sbin/ip6tables -A INPUT -i $INT -p tcp --sport 25 --match state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
|
||||
# Allow DNS, NTP and traceroute traffic
|
||||
/sbin/ip6tables -A OUTPUT -o $INT -p udp --dport 53 --match state --state NEW -j ACCEPT
|
||||
/sbin/ip6tables -A OUTPUT -o $INT -p udp --dport 123 --match state --state NEW -j ACCEPT
|
||||
/sbin/ip6tables -A OUTPUT -o $INT -p udp --dport 33434:33523 --match state --state NEW -j ACCEPT
|
||||
|
||||
# Allow DHCPv6
|
||||
/sbin/ip6tables -t filter -A INPUT -i $INT -p udp --dport 546 -d fe80::/64 -j ACCEPT
|
||||
/sbin/ip6tables -t filter -A OUTPUT -o $INT -p udp --dport 547 -j ACCEPT
|
||||
|
||||
################### IPv4 Specific rules
|
||||
# /sbin/iptables ...
|
||||
|
||||
# Allow DNS, NTP and traceroute traffic
|
||||
/sbin/iptables -A OUTPUT -o $INT -p udp --dport 53 --match state --state NEW -j ACCEPT
|
||||
/sbin/iptables -A OUTPUT -o $INT -p udp --dport 123 --match state --state NEW -j ACCEPT
|
||||
/sbin/iptables -A OUTPUT -o $INT -p udp --dport 33434:33523 --match state --state NEW -j ACCEPT
|
||||
|
||||
# EvoBackup
|
||||
# /sbin/iptables -A INPUT -p tcp --sport XXXX --dport 1024:65535 -s 85.118.59.1 -m state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
# /sbin/iptables -A INPUT -p tcp --sport XXXX --dport 1024:65535 -s 31.170.8.1 -m state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
# /sbin/iptables -A INPUT -p tcp --sport XXXX --dport 1024:65535 -s 178.32.100.48 -m state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
/sbin/iptables -A INPUT -p tcp --sport 2223 --dport 1024:65535 -s 62.210.209.17 -m state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
|
||||
# FTP en mode passif
|
||||
/sbin/iptables -A INPUT -p tcp --dport 60000:61000 -m state --state NEW,ESTABLISHED,RELATED -j ACCEPT
|
||||
|
||||
# EvoMaintenance
|
||||
/sbin/iptables -A INPUT -p tcp --sport 5432 --dport 1024:65535 -s 31.170.8.4 -m state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
/sbin/iptables -A INPUT -p tcp --sport 5432 --dport 1024:65535 -s 62.212.121.90 -m state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
/sbin/iptables -A INPUT -p tcp --sport 5432 --dport 1024:65535 -s 62.212.111.216 -m state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
/sbin/iptables -A INPUT -p tcp --sport 5432 --dport 1024:65535 -s 88.179.18.233 -m state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
/sbin/iptables -A INPUT -p tcp --sport 5432 --dport 1024:65535 -s 85.118.59.50 -m state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
/sbin/iptables -A INPUT -p tcp --sport 5432 --dport 1024:65535 -s 31.170.9.129 -m state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
|
||||
# Proxy
|
||||
/sbin/iptables -t nat -A OUTPUT -p tcp --dport 80 -m owner --uid-owner proxy -j ACCEPT
|
||||
/sbin/iptables -t nat -A OUTPUT -p tcp --dport 80 -d 31.170.8.7 -j ACCEPT
|
||||
/sbin/iptables -t nat -A OUTPUT -p tcp --dport 80 -d 31.170.8.10 -j ACCEPT
|
||||
/sbin/iptables -t nat -A OUTPUT -p tcp --dport 80 -d 31.170.8.217 -j ACCEPT
|
||||
/sbin/iptables -t nat -A OUTPUT -p tcp --dport 80 -d 31.170.8.218 -j ACCEPT
|
||||
/sbin/iptables -t nat -A OUTPUT -p tcp --dport 80 -d 127.0.0.1 -j ACCEPT
|
||||
/sbin/iptables -t nat -A OUTPUT -p tcp --dport 80 -j LOG --log-uid
|
||||
/sbin/iptables -t nat -A OUTPUT -p tcp --dport 80 -j REDIRECT --to-port 8888
|
||||
|
||||
#43251
|
||||
iptables -I INPUT -s 5.188.211.0/24 -p tcp --dport 80 -j DROP
|
||||
iptables -I INPUT -s 5.188.211.0/24 -p tcp --dport 443 -j DROP
|
||||
|
||||
/sbin/iptables -A INPUT -p tcp --sport 2222 --dport 1024:65535 -s 31.170.11.167,31.170.8.7,31.170.8.249,31.170.8.76,31.170.8.222 -m state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
|
||||
# Ticket #52247 : Blocage git / Autorisation port 22 en IPv6
|
||||
/sbin/ip6tables -A INPUT -p tcp ! --syn --sport 22 -s ::/0 -j ACCEPT
|
492
tests/minifirewall-master
Normal file
492
tests/minifirewall-master
Normal file
|
@ -0,0 +1,492 @@
|
|||
#!/bin/sh
|
||||
|
||||
# minifirewall is shellscripts for easy firewalling on a standalone server
|
||||
# we used netfilter/iptables http://netfilter.org/ designed for recent Linux kernel
|
||||
# See https://gitea.evolix.org/evolix/minifirewall
|
||||
|
||||
# Copyright (c) 2007-2020 Evolix
|
||||
# This program is free software; you can redistribute it and/or
|
||||
# modify it under the terms of the GNU General Public License
|
||||
# as published by the Free Software Foundation; either version 3
|
||||
# of the License.
|
||||
|
||||
# Description
|
||||
# script for standalone server
|
||||
|
||||
# Start or stop minifirewall
|
||||
#
|
||||
|
||||
### BEGIN INIT INFO
|
||||
# Provides: minfirewall
|
||||
# Required-Start:
|
||||
# Required-Stop:
|
||||
# Should-Start: $network $syslog $named
|
||||
# Should-Stop: $syslog
|
||||
# Default-Start: 2 3 4 5
|
||||
# Default-Stop: 0 1 6
|
||||
# Short-Description: start and stop the firewall
|
||||
# Description: Firewall designed for standalone server
|
||||
### END INIT INFO
|
||||
|
||||
DESC="minifirewall"
|
||||
NAME="minifirewall"
|
||||
|
||||
|
||||
# Variables configuration
|
||||
#########################
|
||||
|
||||
# iptables paths
|
||||
IPT=/sbin/iptables
|
||||
IPT6=/sbin/ip6tables
|
||||
|
||||
# TCP/IP variables
|
||||
LOOPBACK='127.0.0.0/8'
|
||||
CLASSA='10.0.0.0/8'
|
||||
CLASSB='172.16.0.0/12'
|
||||
CLASSC='192.168.0.0/16'
|
||||
CLASSD='224.0.0.0/4'
|
||||
CLASSE='240.0.0.0/5'
|
||||
ALL='0.0.0.0'
|
||||
BROAD='255.255.255.255'
|
||||
PORTSROOT='0:1023'
|
||||
PORTSUSER='1024:65535'
|
||||
|
||||
chain_exists()
|
||||
{
|
||||
local chain_name="$1" ; shift
|
||||
[ $# -eq 1 ] && local intable="--table $1"
|
||||
iptables $intable -nL "$chain_name" >/dev/null 2>&1
|
||||
}
|
||||
|
||||
# Configuration
|
||||
oldconfigfile="/etc/firewall.rc"
|
||||
configfile="/etc/default/minifirewall"
|
||||
|
||||
IPV6=$(grep "IPV6=" /etc/default/minifirewall | awk -F '=' -F "'" '{print $2}')
|
||||
DOCKER=$(grep "DOCKER=" /etc/default/minifirewall | awk -F '=' -F "'" '{print $2}')
|
||||
INT=$(grep "INT=" /etc/default/minifirewall | awk -F '=' -F "'" '{print $2}')
|
||||
|
||||
case "$1" in
|
||||
start)
|
||||
|
||||
echo "Start IPTables rules..."
|
||||
|
||||
# Stop and warn if error!
|
||||
set -e
|
||||
trap 'echo "ERROR in minifirewall configuration (fix it now!) or script manipulation (fix yourself)." ' INT TERM EXIT
|
||||
|
||||
|
||||
# sysctl network security settings
|
||||
##################################
|
||||
|
||||
# Don't answer to broadcast pings
|
||||
echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts
|
||||
|
||||
# Ignore bogus ICMP responses
|
||||
echo 1 > /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses
|
||||
|
||||
# Disable Source Routing
|
||||
for i in /proc/sys/net/ipv4/conf/*/accept_source_route; do
|
||||
echo 0 > $i
|
||||
done
|
||||
|
||||
# Enable TCP SYN cookies to avoid TCP-SYN-FLOOD attacks
|
||||
# cf http://cr.yp.to/syncookies.html
|
||||
echo 1 > /proc/sys/net/ipv4/tcp_syncookies
|
||||
|
||||
# Disable ICMP redirects
|
||||
for i in /proc/sys/net/ipv4/conf/*/accept_redirects; do
|
||||
echo 0 > $i
|
||||
done
|
||||
|
||||
for i in /proc/sys/net/ipv4/conf/*/send_redirects; do
|
||||
echo 0 > $i
|
||||
done
|
||||
|
||||
# Enable Reverse Path filtering : verify if responses use same network interface
|
||||
for i in /proc/sys/net/ipv4/conf/*/rp_filter; do
|
||||
echo 1 > $i
|
||||
done
|
||||
|
||||
# log des paquets avec adresse incoherente
|
||||
for i in /proc/sys/net/ipv4/conf/*/log_martians; do
|
||||
echo 1 > $i
|
||||
done
|
||||
|
||||
# IPTables configuration
|
||||
########################
|
||||
|
||||
$IPT -N LOG_DROP
|
||||
$IPT -A LOG_DROP -j LOG --log-prefix '[IPTABLES DROP] : '
|
||||
$IPT -A LOG_DROP -j DROP
|
||||
$IPT -N LOG_ACCEPT
|
||||
$IPT -A LOG_ACCEPT -j LOG --log-prefix '[IPTABLES ACCEPT] : '
|
||||
$IPT -A LOG_ACCEPT -j ACCEPT
|
||||
|
||||
if test -f $oldconfigfile; then
|
||||
echo "$oldconfigfile is deprecated, rename to $configfile" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if ! test -f $configfile; then
|
||||
echo "$configfile does not exist" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
tmpfile=`mktemp`
|
||||
. $configfile 2>$tmpfile >&2
|
||||
if [ -s $tmpfile ]; then
|
||||
echo "$configfile returns standard or error output (see below). Stopping." >&2
|
||||
cat $tmpfile
|
||||
exit 1
|
||||
fi
|
||||
rm $tmpfile
|
||||
|
||||
# Trusted ip addresses
|
||||
$IPT -N ONLYTRUSTED
|
||||
$IPT -A ONLYTRUSTED -j LOG_DROP
|
||||
for x in $TRUSTEDIPS
|
||||
do
|
||||
$IPT -I ONLYTRUSTED -s $x -j ACCEPT
|
||||
done
|
||||
|
||||
# Privilegied ip addresses
|
||||
# (trusted ip addresses *are* privilegied)
|
||||
$IPT -N ONLYPRIVILEGIED
|
||||
$IPT -A ONLYPRIVILEGIED -j ONLYTRUSTED
|
||||
for x in $PRIVILEGIEDIPS
|
||||
do
|
||||
$IPT -I ONLYPRIVILEGIED -s $x -j ACCEPT
|
||||
done
|
||||
|
||||
# Chain for restrictions (blacklist IPs/ranges)
|
||||
$IPT -N NEEDRESTRICT
|
||||
|
||||
# We allow all on loopback interface
|
||||
$IPT -A INPUT -i lo -j ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -A INPUT -i lo -j ACCEPT
|
||||
# if OUTPUTDROP
|
||||
$IPT -A OUTPUT -o lo -j ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -A OUTPUT -o lo -j ACCEPT
|
||||
|
||||
# We avoid "martians" packets, typical when W32/Blaster virus
|
||||
# attacked windowsupdate.com and DNS was changed to 127.0.0.1
|
||||
# $IPT -t NAT -I PREROUTING -s $LOOPBACK -i ! lo -j DROP
|
||||
$IPT -A INPUT -s $LOOPBACK ! -i lo -j DROP
|
||||
|
||||
|
||||
if [ "$DOCKER" = "on" ]; then
|
||||
|
||||
$IPT -N MINIFW-DOCKER-TRUSTED
|
||||
$IPT -A MINIFW-DOCKER-TRUSTED -j DROP
|
||||
|
||||
$IPT -N MINIFW-DOCKER-PRIVILEGED
|
||||
$IPT -A MINIFW-DOCKER-PRIVILEGED -j MINIFW-DOCKER-TRUSTED
|
||||
$IPT -A MINIFW-DOCKER-PRIVILEGED -j RETURN
|
||||
|
||||
$IPT -N MINIFW-DOCKER-PUB
|
||||
$IPT -A MINIFW-DOCKER-PUB -j MINIFW-DOCKER-PRIVILEGED
|
||||
$IPT -A MINIFW-DOCKER-PUB -j RETURN
|
||||
|
||||
# Flush DOCKER-USER if exist, create it if absent
|
||||
if chain_exists 'DOCKER-USER'; then
|
||||
$IPT -F DOCKER-USER
|
||||
else
|
||||
$IPT -N DOCKER-USER
|
||||
fi;
|
||||
|
||||
# Pipe new connection through MINIFW-DOCKER-PUB
|
||||
$IPT -A DOCKER-USER -i $INT -m state --state NEW -j MINIFW-DOCKER-PUB
|
||||
$IPT -A DOCKER-USER -j RETURN
|
||||
|
||||
fi
|
||||
|
||||
|
||||
# Local services restrictions
|
||||
#############################
|
||||
|
||||
# Allow services for $INTLAN (local server or local network)
|
||||
$IPT -A INPUT -s $INTLAN -j ACCEPT
|
||||
|
||||
# Enable protection chain for sensible services
|
||||
for x in $SERVICESTCP1p
|
||||
do
|
||||
$IPT -A INPUT -p tcp --dport $x -j NEEDRESTRICT
|
||||
done
|
||||
|
||||
for x in $SERVICESUDP1p
|
||||
do
|
||||
$IPT -A INPUT -p udp --dport $x -j NEEDRESTRICT
|
||||
done
|
||||
|
||||
# Public service
|
||||
for x in $SERVICESTCP1
|
||||
do
|
||||
$IPT -A INPUT -p tcp --dport $x -j ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -A INPUT -p tcp --dport $x -j ACCEPT
|
||||
done
|
||||
|
||||
for x in $SERVICESUDP1
|
||||
do
|
||||
$IPT -A INPUT -p udp --dport $x -j ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -A INPUT -p udp --dport $x -j ACCEPT
|
||||
done
|
||||
|
||||
# Privilegied services
|
||||
for x in $SERVICESTCP2
|
||||
do
|
||||
$IPT -A INPUT -p tcp --dport $x -j ONLYPRIVILEGIED
|
||||
done
|
||||
|
||||
for x in $SERVICESUDP2
|
||||
do
|
||||
$IPT -A INPUT -p udp --dport $x -j ONLYPRIVILEGIED
|
||||
done
|
||||
|
||||
# Private services
|
||||
for x in $SERVICESTCP3
|
||||
do
|
||||
$IPT -A INPUT -p tcp --dport $x -j ONLYTRUSTED
|
||||
done
|
||||
|
||||
for x in $SERVICESUDP3
|
||||
do
|
||||
$IPT -A INPUT -p udp --dport $x -j ONLYTRUSTED
|
||||
done
|
||||
|
||||
|
||||
if [ "$DOCKER" = "on" ]; then
|
||||
|
||||
# Public services defined in SERVICESTCP1 & SERVICESUDP1
|
||||
for dstport in $SERVICESTCP1
|
||||
do
|
||||
$IPT -I MINIFW-DOCKER-PUB -p tcp --dport "$dstport" -j RETURN
|
||||
done
|
||||
|
||||
for dstport in $SERVICESUDP1
|
||||
do
|
||||
$IPT -I MINIFW-DOCKER-PUB -p udp --dport "$dstport" -j RETURN
|
||||
done
|
||||
|
||||
# Privileged services (accessible from privileged & trusted IPs)
|
||||
for dstport in $SERVICESTCP2
|
||||
do
|
||||
for srcip in $PRIVILEGIEDIPS
|
||||
do
|
||||
$IPT -I MINIFW-DOCKER-PRIVILEGED -p tcp -s "$srcip" --dport "$dstport" -j RETURN
|
||||
done
|
||||
|
||||
for srcip in $TRUSTEDIPS
|
||||
do
|
||||
$IPT -I MINIFW-DOCKER-PRIVILEGED -p tcp -s "$srcip" --dport "$dstport" -j RETURN
|
||||
done
|
||||
done
|
||||
|
||||
for dstport in $SERVICESUDP2
|
||||
do
|
||||
for srcip in $PRIVILEGIEDIPS
|
||||
do
|
||||
$IPT -I MINIFW-DOCKER-PRIVILEGED -p udp -s "$srcip" --dport "$dstport" -j RETURN
|
||||
done
|
||||
|
||||
for srcip in $TRUSTEDIPS
|
||||
do
|
||||
$IPT -I MINIFW-DOCKER-PRIVILEGED -p udp -s "$srcip" --dport "$dstport" -j RETURN
|
||||
done
|
||||
done
|
||||
|
||||
# Trusted services (accessible from trusted IPs)
|
||||
for dstport in $SERVICESTCP3
|
||||
do
|
||||
for srcip in $TRUSTEDIPS
|
||||
do
|
||||
$IPT -I MINIFW-DOCKER-TRUSTED -p tcp -s "$srcip" --dport "$dstport" -j RETURN
|
||||
done
|
||||
done
|
||||
|
||||
for dstport in $SERVICESUDP3
|
||||
do
|
||||
for srcip in $TRUSTEDIPS
|
||||
do
|
||||
$IPT -I MINIFW-DOCKER-TRUSTED -p udp -s "$srcip" --dport "$dstport" -j RETURN
|
||||
done
|
||||
done
|
||||
fi
|
||||
|
||||
# External services
|
||||
###################
|
||||
|
||||
# DNS authorizations
|
||||
for x in $DNSSERVEURS
|
||||
do
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 53 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
$IPT -A INPUT -p udp --sport 53 --dport $PORTSUSER -s $x -m state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
$IPT -A OUTPUT -o $INT -p udp -d $x --dport 53 --match state --state NEW -j ACCEPT
|
||||
done
|
||||
|
||||
# HTTP (TCP/80) authorizations
|
||||
for x in $HTTPSITES
|
||||
do
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 80 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
done
|
||||
|
||||
# HTTPS (TCP/443) authorizations
|
||||
for x in $HTTPSSITES
|
||||
do
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 443 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
done
|
||||
|
||||
# FTP (so complex protocol...) authorizations
|
||||
for x in $FTPSITES
|
||||
do
|
||||
# requests on Control connection
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 21 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
# FTP port-mode on Data Connection
|
||||
$IPT -A INPUT -p tcp --sport 20 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
# FTP passive-mode on Data Connection
|
||||
# WARNING, this allow all connections on TCP ports > 1024
|
||||
$IPT -A INPUT -p tcp ! --syn --sport $PORTSUSER --dport $PORTSUSER -s $x -j ACCEPT
|
||||
done
|
||||
|
||||
# SSH authorizations
|
||||
for x in $SSHOK
|
||||
do
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 22 -s $x -j ACCEPT
|
||||
done
|
||||
|
||||
# SMTP authorizations
|
||||
for x in $SMTPOK
|
||||
do
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 25 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
done
|
||||
|
||||
# secure SMTP (TCP/465 et TCP/587) authorizations
|
||||
for x in $SMTPSECUREOK
|
||||
do
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 465 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 587 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
done
|
||||
|
||||
# NTP authorizations
|
||||
for x in $NTPOK
|
||||
do
|
||||
$IPT -A INPUT -p udp --sport 123 -s $x -j ACCEPT
|
||||
$IPT -A OUTPUT -o $INT -p udp -d $x --dport 123 --match state --state NEW -j ACCEPT
|
||||
done
|
||||
|
||||
# Always allow ICMP
|
||||
$IPT -A INPUT -p icmp -j ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -A INPUT -p icmpv6 -j ACCEPT
|
||||
|
||||
|
||||
# IPTables policy
|
||||
#################
|
||||
|
||||
# by default DROP INPUT packets
|
||||
$IPT -P INPUT DROP
|
||||
[ "$IPV6" != "off" ] && $IPT6 -P INPUT DROP
|
||||
|
||||
# by default, no FORWARING (deprecated for Virtual Machines)
|
||||
#echo 0 > /proc/sys/net/ipv4/ip_forward
|
||||
#$IPT -P FORWARD DROP
|
||||
#$IPT6 -P FORWARD DROP
|
||||
|
||||
# by default allow OUTPUT packets... but drop UDP packets (see OUTPUTDROP to drop OUTPUT packets)
|
||||
$IPT -P OUTPUT ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -P OUTPUT ACCEPT
|
||||
$IPT -A OUTPUT -o $INT -p udp --dport 33434:33523 --match state --state NEW -j ACCEPT
|
||||
$IPT -A OUTPUT -p udp --match state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
$IPT -A OUTPUT -p udp -j DROP
|
||||
[ "$IPV6" != "off" ] && $IPT6 -A OUTPUT -o $INT -p udp --dport 33434:33523 --match state --state NEW -j ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -A OUTPUT -p udp --match state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -A OUTPUT -p udp -j DROP
|
||||
|
||||
trap - INT TERM EXIT
|
||||
|
||||
echo "...starting IPTables rules is now finish : OK"
|
||||
;;
|
||||
|
||||
stop)
|
||||
|
||||
echo "Flush all rules and accept everything..."
|
||||
|
||||
# Delete all rules
|
||||
$IPT -F INPUT
|
||||
$IPT -F OUTPUT
|
||||
$IPT -F LOG_DROP
|
||||
$IPT -F LOG_ACCEPT
|
||||
$IPT -F ONLYTRUSTED
|
||||
$IPT -F ONLYPRIVILEGIED
|
||||
$IPT -F NEEDRESTRICT
|
||||
[ "$DOCKER" = "off" ] && $IPT -t nat -F
|
||||
$IPT -t mangle -F
|
||||
[ "$IPV6" != "off" ] && $IPT6 -F INPUT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -F OUTPUT
|
||||
|
||||
if [ "$DOCKER" = "on" ]; then
|
||||
$IPT -F DOCKER-USER
|
||||
$IPT -A DOCKER-USER -j RETURN
|
||||
|
||||
$IPT -F MINIFW-DOCKER-PUB
|
||||
$IPT -X MINIFW-DOCKER-PUB
|
||||
$IPT -F MINIFW-DOCKER-PRIVILEGED
|
||||
$IPT -X MINIFW-DOCKER-PRIVILEGED
|
||||
$IPT -F MINIFW-DOCKER-TRUSTED
|
||||
$IPT -X MINIFW-DOCKER-TRUSTED
|
||||
|
||||
fi
|
||||
|
||||
# Accept all
|
||||
$IPT -P INPUT ACCEPT
|
||||
$IPT -P OUTPUT ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -P INPUT ACCEPT
|
||||
[ "$IPV6" != "off" ] && $IPT6 -P OUTPUT ACCEPT
|
||||
#$IPT -P FORWARD ACCEPT
|
||||
#$IPT -t nat -P PREROUTING ACCEPT
|
||||
#$IPT -t nat -P POSTROUTING ACCEPT
|
||||
|
||||
# Delete non-standard chains
|
||||
$IPT -X LOG_DROP
|
||||
$IPT -X LOG_ACCEPT
|
||||
$IPT -X ONLYPRIVILEGIED
|
||||
$IPT -X ONLYTRUSTED
|
||||
$IPT -X NEEDRESTRICT
|
||||
|
||||
echo "...flushing IPTables rules is now finish : OK"
|
||||
;;
|
||||
|
||||
status)
|
||||
|
||||
$IPT -L -n -v --line-numbers
|
||||
$IPT -t nat -L -n -v --line-numbers
|
||||
$IPT -t mangle -L -n -v --line-numbers
|
||||
$IPT6 -L -n -v --line-numbers
|
||||
$IPT6 -t mangle -L -n -v --line-numbers
|
||||
;;
|
||||
|
||||
reset)
|
||||
|
||||
echo "Reset all IPTables counters..."
|
||||
|
||||
$IPT -Z
|
||||
$IPT -t nat -Z
|
||||
$IPT -t mangle -Z
|
||||
[ "$IPV6" != "off" ] && $IPT6 -Z
|
||||
[ "$IPV6" != "off" ] && $IPT6 -t mangle -Z
|
||||
|
||||
echo "...reseting IPTables counters is now finish : OK"
|
||||
;;
|
||||
|
||||
restart)
|
||||
|
||||
$0 stop
|
||||
$0 start
|
||||
;;
|
||||
|
||||
*)
|
||||
|
||||
echo "Usage: $0 {start|stop|restart|status|reset|squid}"
|
||||
exit 1
|
||||
esac
|
||||
|
||||
exit 0
|
Loading…
Reference in a new issue