Merge branch 'includes'
This commit is contained in:
commit
460df19aea
28
README.md
28
README.md
|
|
@ -8,30 +8,30 @@ 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* from _off_ to _on_
|
||||
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
|
||||
|
||||
|
|
@ -41,11 +41,7 @@ you need to use the port used by the container (ie: 8080) in the public/semi-pub
|
|||
/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
|
||||
|
||||
|
|
|
|||
1051
minifirewall
1051
minifirewall
|
|
@ -4,7 +4,7 @@
|
|||
# we used netfilter/iptables http://netfilter.org/ designed for recent Linux kernel
|
||||
# See https://gitea.evolix.org/evolix/minifirewall
|
||||
|
||||
# Copyright (c) 2007-2020 Evolix
|
||||
# Copyright (c) 2007-2021 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
|
||||
|
|
@ -28,16 +28,30 @@
|
|||
# Description: Firewall designed for standalone server
|
||||
### END INIT INFO
|
||||
|
||||
VERSION="21.12"
|
||||
|
||||
DESC="minifirewall"
|
||||
NAME="minifirewall"
|
||||
|
||||
set -u
|
||||
|
||||
# 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'
|
||||
|
|
@ -51,442 +65,781 @@ 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
|
||||
|
||||
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
|
||||
}
|
||||
|
||||
# Configuration
|
||||
oldconfigfile="/etc/firewall.rc"
|
||||
configfile="/etc/default/minifirewall"
|
||||
start() {
|
||||
echo "Start IPTables rules..."
|
||||
|
||||
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}')
|
||||
# Stop and warn if error!
|
||||
set -e
|
||||
trap 'echo "ERROR in minifirewall configuration (fix it now!) or script manipulation (fix yourself)." ' INT TERM EXIT
|
||||
|
||||
case "$1" in
|
||||
start)
|
||||
# sysctl network security settings
|
||||
##################################
|
||||
|
||||
echo "Start IPTables rules..."
|
||||
# Set 1 to ignore broadcast pings (default)
|
||||
: "${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'}"
|
||||
|
||||
# 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
|
||||
$IPT -F DOCKER-USER
|
||||
if [ "${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
|
||||
$IPT -N DOCKER-USER
|
||||
fi;
|
||||
echo "Invalid SYSCTL_ICMP_ECHO_IGNORE_BROADCASTS value '${SYSCTL_ICMP_ECHO_IGNORE_BROADCASTS}', must be '0' or '1'." >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Pipe new connection through MINIFW-DOCKER-PUB
|
||||
$IPT -A DOCKER-USER -i $INT -m state --state NEW -j MINIFW-DOCKER-PUB
|
||||
$IPT -A DOCKER-USER -j RETURN
|
||||
if [ "${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 '${SYSCTL_ICMP_IGNORE_BOGUS_ERROR_RESPONSES}', must be '0' or '1'." >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
fi
|
||||
if [ "${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
|
||||
|
||||
# Local services restrictions
|
||||
#############################
|
||||
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
|
||||
|
||||
# Allow services for $INTLAN (local server or local network)
|
||||
$IPT -A INPUT -s $INTLAN -j ACCEPT
|
||||
if [ "${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
|
||||
|
||||
# Enable protection chain for sensible services
|
||||
for x in $SERVICESTCP1p
|
||||
do
|
||||
$IPT -A INPUT -p tcp --dport $x -j NEEDRESTRICT
|
||||
if [ "${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
|
||||
|
||||
for x in $SERVICESUDP1p
|
||||
do
|
||||
$IPT -A INPUT -p udp --dport $x -j NEEDRESTRICT
|
||||
# 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
|
||||
|
||||
# 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
|
||||
# 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
|
||||
|
||||
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
|
||||
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
|
||||
|
||||
# Privilegied services
|
||||
for x in $SERVICESTCP2
|
||||
do
|
||||
$IPT -A INPUT -p tcp --dport $x -j ONLYPRIVILEGIED
|
||||
# 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 x in $SERVICESUDP2
|
||||
do
|
||||
$IPT -A INPUT -p udp --dport $x -j ONLYPRIVILEGIED
|
||||
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
|
||||
|
||||
# Private services
|
||||
for x in $SERVICESTCP3
|
||||
do
|
||||
$IPT -A INPUT -p tcp --dport $x -j ONLYTRUSTED
|
||||
# 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 x in $SERVICESUDP3
|
||||
do
|
||||
$IPT -A INPUT -p udp --dport $x -j ONLYTRUSTED
|
||||
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 ${port} -j ONLYTRUSTED
|
||||
fi
|
||||
done
|
||||
|
||||
|
||||
if [ "$DOCKER" = "on" ]; then
|
||||
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
|
||||
# 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
|
||||
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
|
||||
# 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
|
||||
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 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
|
||||
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
|
||||
# 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
|
||||
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
|
||||
fi
|
||||
|
||||
# External services
|
||||
###################
|
||||
# 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
|
||||
# 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 x in $HTTPSITES
|
||||
do
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 80 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
# 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 x in $HTTPSSITES
|
||||
do
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 443 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
# 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 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
|
||||
# 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 x in $SSHOK
|
||||
do
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 22 -s $x -j ACCEPT
|
||||
# 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
|
||||
|
||||
# SMTP authorizations
|
||||
for x in $SMTPOK
|
||||
do
|
||||
$IPT -A INPUT -p tcp ! --syn --sport 25 --dport $PORTSUSER -s $x -j ACCEPT
|
||||
# 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
|
||||
|
||||
# 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
|
||||
# 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
|
||||
#################
|
||||
# IPTables policy
|
||||
#################
|
||||
|
||||
# by default DROP INPUT packets
|
||||
$IPT -P INPUT DROP
|
||||
[ "$IPV6" != "off" ] && $IPT6 -P INPUT DROP
|
||||
# by default DROP INPUT packets
|
||||
${IPT} -P INPUT DROP
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -P INPUT DROP
|
||||
fi
|
||||
|
||||
# by default, no FORWARING (deprecated for Virtual Machines)
|
||||
#echo 0 > /proc/sys/net/ipv4/ip_forward
|
||||
#$IPT -P FORWARD DROP
|
||||
#$IPT6 -P FORWARD DROP
|
||||
# by default, no FORWARDING (deprecated for Virtual Machines)
|
||||
#echo 0 > /proc/sys/net/ipv4/ip_forward
|
||||
#${IPT} -P FORWARD DROP
|
||||
#${IPT6} -P FORWARD DROP
|
||||
|
||||
# by default allow OUTPUT packets... but drop UDP packets (see OUTPUTDROP to drop OUTPUT packets)
|
||||
$IPT -P OUTPUT ACCEPT
|
||||
[ "$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
|
||||
# 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
|
||||
|
||||
trap - INT TERM EXIT
|
||||
${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)
|
||||
}
|
||||
|
||||
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
|
||||
${IPT} -F INPUT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -F INPUT
|
||||
fi
|
||||
|
||||
if [ "$DOCKER" = "on" ]; then
|
||||
$IPT -F DOCKER-USER
|
||||
$IPT -A DOCKER-USER -j RETURN
|
||||
${IPT} -F OUTPUT
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -F OUTPUT
|
||||
fi
|
||||
|
||||
$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
|
||||
${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
|
||||
$IPT -P OUTPUT ACCEPT
|
||||
[ "$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
|
||||
${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
|
||||
${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)
|
||||
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
|
||||
${IPT} -Z
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -Z
|
||||
fi
|
||||
|
||||
${IPT} -t nat -Z
|
||||
|
||||
${IPT} -t mangle -Z
|
||||
if is_ipv6_enabled; then
|
||||
${IPT6} -t mangle -Z
|
||||
fi
|
||||
|
||||
echo "...reseting IPTables counters is now finish : OK"
|
||||
;;
|
||||
}
|
||||
|
||||
restart)
|
||||
echo "${NAME} version ${VERSION}"
|
||||
source_configuration
|
||||
|
||||
$0 stop
|
||||
$0 start
|
||||
;;
|
||||
case "${1:-''}" in
|
||||
start)
|
||||
start
|
||||
;;
|
||||
|
||||
*)
|
||||
stop)
|
||||
stop
|
||||
;;
|
||||
|
||||
echo "Usage: $0 {start|stop|restart|status|reset|squid}"
|
||||
exit 1
|
||||
status)
|
||||
status
|
||||
;;
|
||||
|
||||
reset)
|
||||
reset
|
||||
;;
|
||||
|
||||
restart)
|
||||
stop
|
||||
start
|
||||
;;
|
||||
|
||||
*)
|
||||
echo "Usage: $0 {start|stop|restart|status|reset}"
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
|
||||
exit 0
|
||||
|
|
|
|||
|
|
@ -1,34 +1,40 @@
|
|||
# Configuration for minifirewall : https://gitea.evolix.org/evolix/minifirewall
|
||||
# Version 20.12 — 2020-12-01 22:55:35
|
||||
# Version 22.3 — 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'
|
||||
# WARNING : If the port mapping is different between host and container
|
||||
# (ie: Listen on :8090 on host but :8080 in container)
|
||||
# Then you need to makes the rules with the port used inside the container
|
||||
|
||||
# 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
|
||||
|
|
@ -49,57 +55,85 @@ 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 ::/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'
|
||||
|
|
@ -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
|
||||
|
|
@ -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 New Issue