minifirewall: upstream release 22.03.1 and use includes directory
Some checks reported errors
continuous-integration/drone/push Build was killed
Some checks reported errors
continuous-integration/drone/push Build was killed
This commit is contained in:
parent
17f884b04a
commit
ba90203f21
|
|
@ -17,6 +17,7 @@ The **patch** part changes is incremented if multiple releases happen the same m
|
|||
* evolinux-base: backup-server-state release 22.03
|
||||
* evolinux-base: Add non-free repos & install non-free firmware on dedicated hardware
|
||||
* generate-ldif: Add services check for bkctld
|
||||
* minifirewall: upstream release 22.03.1 and use includes directory
|
||||
|
||||
### Fixed
|
||||
|
||||
|
|
|
|||
|
|
@ -1,13 +1,19 @@
|
|||
---
|
||||
|
||||
minifirewall_main_file: /etc/default/minifirewall
|
||||
minifirewall_tail_file: /etc/default/minifirewall.tail
|
||||
# Deprecated variable
|
||||
# minifirewall_main_file: /etc/default/minifirewall
|
||||
|
||||
minifirewall_tail_file: zzz-tail
|
||||
minifirewall_tail_included: False
|
||||
minifirewall_tail_force: True
|
||||
|
||||
# Overwrite files completely
|
||||
minifirewall_force_upgrade_script: False
|
||||
minifirewall_force_upgrade_config: False
|
||||
|
||||
# Update specific values in configuration
|
||||
minifirewall_update_config: True
|
||||
|
||||
minifirewall_git_url: "https://forge.evolix.org/minifirewall.git"
|
||||
minifirewall_checkout_path: "/tmp/minifirewall"
|
||||
minifirewall_int: "{{ ansible_default_ipv4.interface }}"
|
||||
|
|
@ -31,7 +37,7 @@ minifirewall_private_ports_tcp: [5666]
|
|||
minifirewall_private_ports_udp: []
|
||||
|
||||
# Keep a null value to leave the setting as is
|
||||
# otherwise use an Array, eg. "minifirewall_ssh_ok: ['0.0.0.0/0']"
|
||||
# otherwise use an Array, eg. "minifirewall_ssh_ok: ['0.0.0.0/0', '::/0']"
|
||||
minifirewall_dns_servers: Null
|
||||
minifirewall_http_sites: Null
|
||||
minifirewall_https_sites: Null
|
||||
|
|
|
|||
845
minifirewall/files/minifirewall
Executable file
845
minifirewall/files/minifirewall
Executable file
|
|
@ -0,0 +1,845 @@
|
|||
#!/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) 2007-2022 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: minifirewall
|
||||
# Required-Start:
|
||||
# Required-Stop:
|
||||
# Should-Start: $network $syslog $named
|
||||
# Should-Stop: $syslog
|
||||
# Default-Start: 2 3 4 5
|
||||
# Default-Stop: 0 1 6
|
||||
# Short-Description: start and stop the firewall
|
||||
# Description: Firewall designed for standalone server
|
||||
### END INIT INFO
|
||||
|
||||
VERSION="22.03.1"
|
||||
|
||||
NAME="minifirewall"
|
||||
DESC="Firewall designed for standalone server"
|
||||
|
||||
set -u
|
||||
|
||||
# Variables configuration
|
||||
#########################
|
||||
|
||||
config_file="/etc/default/minifirewall"
|
||||
includes_dir="/etc/minifirewall.d"
|
||||
|
||||
# iptables paths
|
||||
IPT=$(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 "${IPT6}" ]; then
|
||||
echo "Unable to find 'ip6tables\` command in PATH." >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# TCP/IP variables
|
||||
LOOPBACK='127.0.0.0/8'
|
||||
CLASSA='10.0.0.0/8'
|
||||
CLASSB='172.16.0.0/12'
|
||||
CLASSC='192.168.0.0/16'
|
||||
CLASSD='224.0.0.0/4'
|
||||
CLASSE='240.0.0.0/5'
|
||||
ALL='0.0.0.0'
|
||||
BROAD='255.255.255.255'
|
||||
PORTSROOT='0:1023'
|
||||
PORTSUSER='1024:65535'
|
||||
|
||||
# Configuration
|
||||
|
||||
INT=''
|
||||
IPV6=''
|
||||
DOCKER=''
|
||||
INTLAN=''
|
||||
TRUSTEDIPS=''
|
||||
PRIVILEGIEDIPS=''
|
||||
SERVICESTCP1p=''
|
||||
SERVICESUDP1p=''
|
||||
SERVICESTCP1=''
|
||||
SERVICESUDP1=''
|
||||
SERVICESTCP2=''
|
||||
SERVICESUDP2=''
|
||||
SERVICESTCP3=''
|
||||
SERVICESUDP3=''
|
||||
DNSSERVEURS=''
|
||||
HTTPSITES=''
|
||||
HTTPSSITES=''
|
||||
FTPSITES=''
|
||||
SSHOK=''
|
||||
SMTPOK=''
|
||||
SMTPSECUREOK=''
|
||||
NTPOK=''
|
||||
PROXY=''
|
||||
PROXYBYPASS=''
|
||||
PROXYPORT=''
|
||||
BACKUPSERVERS=''
|
||||
|
||||
LEGACY_CONFIG='off'
|
||||
|
||||
is_ipv6_enabled() {
|
||||
test "${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"
|
||||
fi
|
||||
# shellcheck disable=SC2086
|
||||
iptables ${intable} -nL "${chain_name}" >/dev/null 2>&1
|
||||
}
|
||||
source_file_or_error() {
|
||||
file=$1
|
||||
echo "...sourcing '${file}\`"
|
||||
|
||||
tmpfile=$(mktemp --tmpdir=/tmp minifirewall.XXX)
|
||||
. "${file}" 2>"${tmpfile}" >&2
|
||||
|
||||
if [ -s "${tmpfile}" ]; then
|
||||
echo "${file} returns standard or error output (see below). Stopping." >&2
|
||||
cat "${tmpfile}"
|
||||
exit 1
|
||||
fi
|
||||
rm "${tmpfile}"
|
||||
}
|
||||
source_configuration() {
|
||||
if ! test -f ${config_file}; then
|
||||
echo "${config_file} does not exist" >&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 ${old_config_file}; then
|
||||
echo "${old_config_file} is deprecated. Rename it to ${config_file}" >&2
|
||||
fi
|
||||
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if grep -e "iptables" -e "ip6tables" "${config_file}" | grep -qvE "^#"; then
|
||||
# Backward compatible mode
|
||||
###########################
|
||||
|
||||
echo "Legacy config detected"
|
||||
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)
|
||||
grep -E "^\s*[_a-zA-Z0-9]+=" "${config_file}" > "${tmp_config_file}"
|
||||
|
||||
source_file_or_error "${tmp_config_file}"
|
||||
rm "${tmp_config_file}"
|
||||
else
|
||||
source_file_or_error "${config_file}"
|
||||
fi
|
||||
}
|
||||
source_includes() {
|
||||
if [ -d "${includes_dir}" ]; then
|
||||
include_files=$(find ${includes_dir} -type f -readable -not -name '*.*' | sort -h)
|
||||
for include_file in ${include_files}; do
|
||||
source_file_or_error "${include_file}"
|
||||
done
|
||||
fi
|
||||
}
|
||||
|
||||
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
|
||||
##################################
|
||||
|
||||
# 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)
|
||||
: "${SYSCTL_ACCEPT_SOURCE_ROUTE:=0}"
|
||||
# Set 1 to enable TCP SYN cookies (default)
|
||||
# cf http://cr.yp.to/syncookies.html
|
||||
: "${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)
|
||||
: "${SYSCTL_LOG_MARTIANS:=1}"
|
||||
|
||||
if [ "${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
|
||||
else
|
||||
echo "Invalid SYSCTL_ICMP_ECHO_IGNORE_BROADCASTS value '${SYSCTL_ICMP_ECHO_IGNORE_BROADCASTS}', must be '0' or '1'." >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if [ "${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
|
||||
else
|
||||
echo "Invalid SYSCTL_ICMP_IGNORE_BOGUS_ERROR_RESPONSES value '${SYSCTL_ICMP_IGNORE_BOGUS_ERROR_RESPONSES}', must be '0' or '1'." >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if [ "${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}" = > "${proc_sys_file}"
|
||||
done
|
||||
else
|
||||
echo "Invalid SYSCTL_ACCEPT_SOURCE_ROUTE value '${SYSCTL_ACCEPT_SOURCE_ROUTE}', must be '0' or '1'." >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if [ "${SYSCTL_TCP_SYNCOOKIES}" = "1" ] || [ "${SYSCTL_TCP_SYNCOOKIES}" = "0" ]; then
|
||||
echo "${SYSCTL_TCP_SYNCOOKIES}" > /proc/sys/net/ipv4/tcp_syncookies
|
||||
else
|
||||
echo "Invalid SYSCTL_TCP_SYNCOOKIES value '${SYSCTL_TCP_SYNCOOKIES}', must be '0' or '1'." >&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
|
||||
else
|
||||
echo "Invalid SYSCTL_ICMP_REDIRECTS value '${SYSCTL_ICMP_REDIRECTS}', must be '0' or '1'." >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if [ "${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}" > "${proc_sys_file}"
|
||||
done
|
||||
else
|
||||
echo "Invalid SYSCTL_RP_FILTER value '${SYSCTL_RP_FILTER}', must be '0' or '1'." >&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
|
||||
else
|
||||
echo "Invalid SYSCTL_LOG_MARTIANS value '${SYSCTL_LOG_MARTIANS}', must be '0' or '1'." >&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
|
||||
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
|
||||
|
||||
# Trusted ip addresses
|
||||
${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
|
||||
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
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -N NEEDRESTRICT
|
||||
fi
|
||||
|
||||
# We allow all on loopback interface
|
||||
${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
|
||||
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
|
||||
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
|
||||
|
||||
# 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)
|
||||
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
|
||||
|
||||
# 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 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 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 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 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 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 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
|
||||
${IPT} -I MINIFW-DOCKER-PRIVILEGED -p tcp -s "${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 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,RELATED -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,RELATED -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 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 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 IP in ${FTPSITES}; do
|
||||
if is_ipv6 ${IP}; then
|
||||
if is_ipv6_enabled; then
|
||||
# requests on Control connection
|
||||
${IPT6} -A INPUT -p tcp ! --syn --sport 21 --dport ${PORTSUSER} -s ${IP} -j ACCEPT
|
||||
# FTP port-mode on Data Connection
|
||||
${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
|
||||
${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 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 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 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 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,RELATED -j ACCEPT
|
||||
fi
|
||||
else
|
||||
${IPT} -A INPUT -p tcp --sport "${server_port}" --dport 1024:65535 -s "${server_ip}" -m state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
fi
|
||||
else
|
||||
echo "Unrecognized syntax for BACKUPSERVERS '${server}\`. Use space-separated IP:PORT tuples." >&2
|
||||
exit 1
|
||||
fi
|
||||
done
|
||||
|
||||
# Always allow ICMP
|
||||
${IPT} -A INPUT -p icmp -j ACCEPT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A INPUT -p icmpv6 -j ACCEPT
|
||||
fi
|
||||
|
||||
|
||||
# IPTables policy
|
||||
#################
|
||||
|
||||
# by default DROP INPUT packets
|
||||
${IPT} -P INPUT DROP
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -P INPUT DROP
|
||||
fi
|
||||
|
||||
# by default, no FORWARDING (deprecated for Virtual Machines)
|
||||
#echo 0 > /proc/sys/net/ipv4/ip_forward
|
||||
#${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
|
||||
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,RELATED -j ACCEPT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A OUTPUT -p udp --match state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
fi
|
||||
|
||||
${IPT} -A OUTPUT -p udp -j DROP
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -A OUTPUT -p udp -j DROP
|
||||
fi
|
||||
|
||||
if is_legacy_config; then
|
||||
source_file_or_error "${config_file}"
|
||||
fi
|
||||
|
||||
# Source files present in optional directory
|
||||
source_includes
|
||||
|
||||
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
|
||||
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-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
|
||||
|
||||
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
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -Z
|
||||
fi
|
||||
|
||||
${IPT} -t nat -Z
|
||||
|
||||
${IPT} -t mangle -Z
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -t mangle -Z
|
||||
fi
|
||||
|
||||
echo "...reseting IPTables counters is now finish : OK"
|
||||
}
|
||||
|
||||
echo "${NAME} version ${VERSION}"
|
||||
source_configuration
|
||||
|
||||
case "${1:-''}" in
|
||||
start)
|
||||
start
|
||||
;;
|
||||
|
||||
stop)
|
||||
stop
|
||||
;;
|
||||
|
||||
status)
|
||||
status
|
||||
;;
|
||||
|
||||
reset)
|
||||
reset
|
||||
;;
|
||||
|
||||
restart)
|
||||
stop
|
||||
start
|
||||
;;
|
||||
|
||||
*)
|
||||
echo "Usage: $0 {start|stop|restart|status|reset}"
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
|
||||
exit 0
|
||||
|
|
@ -1,31 +1,37 @@
|
|||
# Configuration for minifirewall : https://gitea.evolix.org/evolix/minifirewall
|
||||
# Version 20.12 — 2020-12-01 22:55:35
|
||||
# Version 22.03.1 — 2022-03-15
|
||||
# shellcheck shell=sh disable=SC2034
|
||||
|
||||
# Main interface
|
||||
INT='eth0'
|
||||
|
||||
# IPv6
|
||||
IPV6=on
|
||||
IPV6='on'
|
||||
|
||||
# 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 iptable
|
||||
# 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 local network
|
||||
# ...will be often IP/32 if you don't trust anything
|
||||
INTLAN='192.168.0.2/32'
|
||||
# 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'
|
||||
|
||||
# Trusted IPv4 addresses for private and semi-public services
|
||||
TRUSTEDIPS='31.170.9.129 62.212.121.90 31.170.8.4 82.65.34.85 54.37.106.210 51.210.84.146'
|
||||
# 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 62.212.121.90 31.170.8.4 2a01:9500::fada/128 82.65.34.85 54.37.106.210 51.210.84.146'
|
||||
|
||||
# Privilegied IPv4 addresses for semi-public services
|
||||
# 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
|
||||
|
|
@ -45,62 +51,86 @@ SERVICESUDP2=''
|
|||
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 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'
|
||||
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 SSH from Trusted IPv6 addresses
|
||||
/sbin/ip6tables -A INPUT -i $INT -p tcp --dport 22 -s 2a01:9500:37:129::/64 -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 outgoing SSH/HTTP/HTTPS/SMTP/DNS traffic
|
||||
/sbin/ip6tables -A INPUT -i $INT -p tcp --sport 22 --match state --state ESTABLISHED,RELATED -j ACCEPT
|
||||
/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
|
||||
|
||||
# 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
|
||||
# Custom sysctl values (advanced)
|
||||
#################################
|
||||
|
||||
# Example: allow DHCPv6
|
||||
/sbin/ip6tables -A INPUT -i $INT -p udp --dport 546 -d fe80::/64 -j ACCEPT
|
||||
/sbin/ip6tables -A OUTPUT -o $INT -p udp --dport 547 -j ACCEPT
|
||||
# In most cases, the default values set by minifirewall are good.
|
||||
# If you really know what you are doing,
|
||||
# you can uncomment some lines and customize the values.
|
||||
|
||||
# IPv4 Specific rules
|
||||
#####################
|
||||
# Set 1 to ignore broadcast pings (default)
|
||||
# SYSCTL_ICMP_ECHO_IGNORE_BROADCASTS='1'
|
||||
|
||||
# /sbin/iptables ...
|
||||
# Set 1 to ignore bogus ICMP responses (default)
|
||||
# SYSCTL_ICMP_IGNORE_BOGUS_ERROR_RESPONSES='1'
|
||||
|
||||
# Set 0 to disable source routing (default)
|
||||
# SYSCTL_ACCEPT_SOURCE_ROUTE='0'
|
||||
|
||||
# Set 1 to enable TCP SYN cookies (default)
|
||||
# SYSCTL_TCP_SYNCOOKIES='1'
|
||||
|
||||
# Set 0 to disable ICMP redirects (default)
|
||||
# SYSCTL_ICMP_REDIRECTS='0'
|
||||
|
||||
# Set 1 to enable Reverse Path filtering (default)
|
||||
# Set 0 if VRRP is used
|
||||
# SYSCTL_RP_FILTER='1'
|
||||
|
||||
# Set 1 to log packets with inconsistent address (default)
|
||||
# SYSCTL_LOG_MARTIANS='1'
|
||||
|
|
@ -9,11 +9,12 @@
|
|||
|
||||
- name: Stat minifirewall config file (before)
|
||||
stat:
|
||||
path: "{{ minifirewall_main_file }}"
|
||||
path: "/etc/default/minifirewall"
|
||||
register: minifirewall_before
|
||||
|
||||
- name: Check if minifirewall is running
|
||||
shell: /sbin/iptables -L -n | grep -E "^(DROP\s+udp|ACCEPT\s+icmp)\s+--\s+0\.0\.0\.0\/0\s+0\.0\.0\.0\/0\s*$"
|
||||
shell:
|
||||
cmd: /sbin/iptables -L -n | grep -E "^(DROP\s+udp|ACCEPT\s+icmp)\s+--\s+0\.0\.0\.0\/0\s+0\.0\.0\.0\/0\s*$"
|
||||
changed_when: False
|
||||
failed_when: False
|
||||
check_mode: no
|
||||
|
|
@ -25,14 +26,14 @@
|
|||
|
||||
- name: Begin marker for IP addresses
|
||||
lineinfile:
|
||||
dest: "{{ minifirewall_main_file }}"
|
||||
dest: "/etc/default/minifirewall"
|
||||
line: "# BEGIN ANSIBLE MANAGED BLOCK FOR IPS"
|
||||
insertbefore: '^# Main interface'
|
||||
create: no
|
||||
|
||||
- name: End marker for IP addresses
|
||||
lineinfile:
|
||||
dest: "{{ minifirewall_main_file }}"
|
||||
dest: "/etc/default/minifirewall"
|
||||
create: no
|
||||
line: "# END ANSIBLE MANAGED BLOCK FOR IPS"
|
||||
insertafter: '^PRIVILEGIEDIPS='
|
||||
|
|
@ -43,12 +44,16 @@
|
|||
msg: You must provide at least 1 trusted IP
|
||||
|
||||
- debug:
|
||||
msg: "Warning: minifirewall_trusted_ips='0.0.0.0/0', the firewall is useless!"
|
||||
when: minifirewall_trusted_ips == ["0.0.0.0/0"]
|
||||
msg: "Warning: minifirewall_trusted_ips contains '0.0.0.0/0', the firewall is useless on IPv4!"
|
||||
when: "'0.0.0.0/0' in minifirewall_trusted_ips"
|
||||
|
||||
- debug:
|
||||
msg: "Warning: minifirewall_trusted_ips contains '::/0', the firewall is useless on IPv6!"
|
||||
when: "'::/0' in minifirewall_trusted_ips"
|
||||
|
||||
- name: Configure IP addresses
|
||||
blockinfile:
|
||||
dest: "{{ minifirewall_main_file }}"
|
||||
dest: "/etc/default/minifirewall"
|
||||
marker: "# {mark} ANSIBLE MANAGED BLOCK FOR IPS"
|
||||
block: |
|
||||
# Main interface
|
||||
|
|
@ -60,8 +65,12 @@
|
|||
# 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 iptable
|
||||
DOCKER='{{ minifirewall_docker }}'
|
||||
# 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 local network
|
||||
# ...will be often IP/32 if you don't trust anything
|
||||
|
|
@ -78,21 +87,21 @@
|
|||
|
||||
- name: Begin marker for ports
|
||||
lineinfile:
|
||||
dest: "{{ minifirewall_main_file }}"
|
||||
dest: "/etc/default/minifirewall"
|
||||
line: "# BEGIN ANSIBLE MANAGED BLOCK FOR PORTS"
|
||||
insertbefore: '^# Protected services'
|
||||
create: no
|
||||
|
||||
- name: End marker for ports
|
||||
lineinfile:
|
||||
dest: "{{ minifirewall_main_file }}"
|
||||
dest: "/etc/default/minifirewall"
|
||||
line: "# END ANSIBLE MANAGED BLOCK FOR PORTS"
|
||||
insertafter: '^SERVICESUDP3='
|
||||
create: no
|
||||
|
||||
- name: Configure ports
|
||||
blockinfile:
|
||||
dest: "{{ minifirewall_main_file }}"
|
||||
dest: "/etc/default/minifirewall"
|
||||
marker: "# {mark} ANSIBLE MANAGED BLOCK FOR PORTS"
|
||||
block: |
|
||||
# Protected services
|
||||
|
|
@ -116,7 +125,7 @@
|
|||
|
||||
- name: Configure DNSSERVEURS
|
||||
lineinfile:
|
||||
dest: "{{ minifirewall_main_file }}"
|
||||
dest: "/etc/default/minifirewall"
|
||||
line: "DNSSERVEURS='{{ minifirewall_dns_servers | join(' ') }}'"
|
||||
regexp: "DNSSERVEURS='.*'"
|
||||
create: no
|
||||
|
|
@ -124,7 +133,7 @@
|
|||
|
||||
- name: Configure HTTPSITES
|
||||
lineinfile:
|
||||
dest: "{{ minifirewall_main_file }}"
|
||||
dest: "/etc/default/minifirewall"
|
||||
line: "HTTPSITES='{{ minifirewall_http_sites | join(' ') }}'"
|
||||
regexp: "HTTPSITES='.*'"
|
||||
create: no
|
||||
|
|
@ -132,7 +141,7 @@
|
|||
|
||||
- name: Configure HTTPSSITES
|
||||
lineinfile:
|
||||
dest: "{{ minifirewall_main_file }}"
|
||||
dest: "/etc/default/minifirewall"
|
||||
line: "HTTPSSITES='{{ minifirewall_https_sites | join(' ') }}'"
|
||||
regexp: "HTTPSSITES='.*'"
|
||||
create: no
|
||||
|
|
@ -140,7 +149,7 @@
|
|||
|
||||
- name: Configure FTPSITES
|
||||
lineinfile:
|
||||
dest: "{{ minifirewall_main_file }}"
|
||||
dest: "/etc/default/minifirewall"
|
||||
line: "FTPSITES='{{ minifirewall_ftp_sites | join(' ') }}'"
|
||||
regexp: "FTPSITES='.*'"
|
||||
create: no
|
||||
|
|
@ -148,7 +157,7 @@
|
|||
|
||||
- name: Configure SSHOK
|
||||
lineinfile:
|
||||
dest: "{{ minifirewall_main_file }}"
|
||||
dest: "/etc/default/minifirewall"
|
||||
line: "SSHOK='{{ minifirewall_ssh_ok | join(' ') }}'"
|
||||
regexp: "SSHOK='.*'"
|
||||
create: no
|
||||
|
|
@ -156,7 +165,7 @@
|
|||
|
||||
- name: Configure SMTPOK
|
||||
lineinfile:
|
||||
dest: "{{ minifirewall_main_file }}"
|
||||
dest: "/etc/default/minifirewall"
|
||||
line: "SMTPOK='{{ minifirewall_smtp_ok | join(' ') }}'"
|
||||
regexp: "SMTPOK='.*'"
|
||||
create: no
|
||||
|
|
@ -164,7 +173,7 @@
|
|||
|
||||
- name: Configure SMTPSECUREOK
|
||||
lineinfile:
|
||||
dest: "{{ minifirewall_main_file }}"
|
||||
dest: "/etc/default/minifirewall"
|
||||
line: "SMTPSECUREOK='{{ minifirewall_smtp_secure_ok | join(' ') }}'"
|
||||
regexp: "SMTPSECUREOK='.*'"
|
||||
create: no
|
||||
|
|
@ -172,29 +181,15 @@
|
|||
|
||||
- name: Configure NTPOK
|
||||
lineinfile:
|
||||
dest: "{{ minifirewall_main_file }}"
|
||||
dest: "/etc/default/minifirewall"
|
||||
line: "NTPOK='{{ minifirewall_ntp_ok | join(' ') }}'"
|
||||
regexp: "NTPOK='.*'"
|
||||
create: no
|
||||
when: minifirewall_ntp_ok is not none
|
||||
|
||||
- name: evomaintenance
|
||||
lineinfile:
|
||||
dest: "{{ minifirewall_main_file }}"
|
||||
line: "/sbin/iptables -A INPUT -p tcp --sport 5432 --dport 1024:65535 -s {{ item }} -m state --state ESTABLISHED,RELATED -j ACCEPT"
|
||||
insertafter: "^# EvoMaintenance"
|
||||
loop: "{{ evomaintenance_hosts }}"
|
||||
|
||||
- name: remove minifirewall example rule for the evomaintenance
|
||||
lineinfile:
|
||||
dest: "{{ minifirewall_main_file }}"
|
||||
regexp: '^#.*(--sport 5432).*(-s X\.X\.X\.X)'
|
||||
state: absent
|
||||
when: evomaintenance_hosts | length > 0
|
||||
|
||||
- name: Stat minifirewall config file (after)
|
||||
stat:
|
||||
path: "{{ minifirewall_main_file }}"
|
||||
path: "/etc/default/minifirewall"
|
||||
register: minifirewall_after
|
||||
|
||||
- name: restart minifirewall
|
||||
|
|
|
|||
|
|
@ -6,18 +6,26 @@
|
|||
state: present
|
||||
|
||||
- name: init script is copied
|
||||
template:
|
||||
src: minifirewall.j2
|
||||
copy:
|
||||
src: minifirewall
|
||||
dest: /etc/init.d/minifirewall
|
||||
force: "{{ minifirewall_force_upgrade_script | default('no') }}"
|
||||
mode: "0700"
|
||||
owner: root
|
||||
group: root
|
||||
|
||||
- name: include directory is present
|
||||
file:
|
||||
path: /etc/minifirewall.d/
|
||||
state: directory
|
||||
owner: root
|
||||
group: root
|
||||
mode: "0700"
|
||||
|
||||
- name: configuration is copied
|
||||
copy:
|
||||
src: minifirewall.conf
|
||||
dest: "{{ minifirewall_main_file }}"
|
||||
dest: "/etc/default/minifirewall"
|
||||
force: "{{ minifirewall_force_upgrade_config | default('no') }}"
|
||||
mode: "0600"
|
||||
owner: root
|
||||
|
|
|
|||
|
|
@ -4,9 +4,15 @@
|
|||
set_fact:
|
||||
minifirewall_restart_handler_name: "{{ minifirewall_restart_if_needed | bool | ternary('restart minifirewall', 'restart minifirewall (noop)') }}"
|
||||
|
||||
- name: Fail if minifirewall_main_file is defined
|
||||
fail:
|
||||
msg: "Variable minifirewall_main_file is deprecated and not configurable anymore."
|
||||
when: minifirewall_main_file is defined
|
||||
|
||||
- include: install.yml
|
||||
|
||||
- include: config.yml
|
||||
when: minifirewall_update_config | bool
|
||||
|
||||
- include: nrpe.yml
|
||||
|
||||
|
|
|
|||
|
|
@ -2,7 +2,7 @@
|
|||
- name: Add some rules at the end of minifirewall file
|
||||
template:
|
||||
src: "{{ item }}"
|
||||
dest: "{{ minifirewall_tail_file }}"
|
||||
dest: "/etc/minifirewall.d/{{ minifirewall_tail_file }}"
|
||||
force: "{{ minifirewall_tail_force | bool }}"
|
||||
loop: "{{ query('first_found', templates) }}"
|
||||
vars:
|
||||
|
|
@ -17,18 +17,6 @@
|
|||
var: minifirewall_tail_template
|
||||
verbosity: 1
|
||||
|
||||
- name: source minifirewall.tail at the end of the main file
|
||||
blockinfile:
|
||||
dest: "{{ minifirewall_main_file }}"
|
||||
marker: "# {mark} ANSIBLE MANAGED EXTERNAL RULES"
|
||||
block: ". {{ minifirewall_tail_file }}"
|
||||
insertbefore: EOF
|
||||
register: minifirewall_tail_source
|
||||
|
||||
- debug:
|
||||
var: minifirewall_tail_source
|
||||
verbosity: 1
|
||||
|
||||
- name: restart minifirewall
|
||||
# service:
|
||||
# name: minifirewall
|
||||
|
|
|
|||
|
|
@ -1,492 +0,0 @@
|
|||
#!/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="{{ minifirewall_main_file }}"
|
||||
|
||||
IPV6=$(grep "IPV6=" {{ minifirewall_main_file }} | awk -F '=' -F "'" '{print $2}')
|
||||
DOCKER=$(grep "DOCKER=" {{ minifirewall_main_file }} | awk -F '=' -F "'" '{print $2}')
|
||||
INT=$(grep "INT=" {{ minifirewall_main_file }} | 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