901 lines
28 KiB
Plaintext
Executable File
901 lines
28 KiB
Plaintext
Executable File
#/bin/bash
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# By Brielle Bruns <bruns@2mbit.com>
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# URL: http://www.sosdg.org/freestuff/firewall
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# License: GPLv3
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#
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# Copyright (C) 2009 - 2010 Brielle Bruns
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# Copyright (C) 2009 - 2010 The Summit Open Source Development Group
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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FW_VERSION="0.9.11"
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# These option is here to help pre-1.0 users easily upgrade, defines critical defaults
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# that would otherwise require remaking their options file. I leave this on by default,
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# but if you want to make sure you have a current options file, define this to 0.
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COMPAT_CONFIG=1
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BASEDIR=/etc/firewall-sosdg
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PATH=/usr/sbin:/usr/bin:/sbin:/bin
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#BASEDIR=`pwd`
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TWEAKS=$BASEDIR/tweaks
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if [ ! -r $BASEDIR/include/static ] || [ ! -r $BASEDIR/include/functions ]; then
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echo "Error: Missing either include/static or include/functions. These are critical to operation"
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echo "of this script. Please make sure they are readable and exist!"
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exit 1
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fi
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. $BASEDIR/include/static
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if [ -r $BASEDIR/options ]; then
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. $BASEDIR/options
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else
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echo -e "${RED}Error: Can not load options file. Did you forget to rename options.default?"
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exit 1
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fi
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. $BASEDIR/include/functions
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while [ $# -gt 0 ]; do
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case "$1" in
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-f|--flush)
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iptables_policy_reset ipv4 ACCEPT
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iptables_policy_reset ipv6 ACCEPT
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iptables_rules_flush ipv4
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iptables_rules_flush ipv6
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exit 0
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;;
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-h|--help)
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show_help
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exit 0
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;;
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esac
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shift
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done
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if [ ${PORTFW} ] && [ ! -r "${PORTFW}" ]; then
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display_c RED "Error: Missing ${PORTFW} as defined in the PORTFW option. Please make sure"
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display_c RED "it exists, or comment out the PORTFW line in options."
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exit 1
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fi
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echo "=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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Firewall/SOSDG ${FW_VERSION}
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Brielle Bruns <bruns@2mbit.com>
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http://www.sosdg.org/freestuff/firewall
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This program comes with ABSOLUTELY NO WARRANTY.
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This is free software, and you are welcome to
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redistribute it under certain conditions.
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=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-="
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if [ "$UID" != "0" ]; then
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display_c RED "You must be root to run this script."
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exit 2
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fi
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if [ ! -x "$IPTABLES" ]; then
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display_c RED "iptables command not found. Please make sure you have the iptables"
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display_c RED "installed (package or source) and you have the IPTABLES option properly"
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display_c RED "defined in the 'options' file."
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exit 3
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fi
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if [ ! -x "$IP6TABLES" ] && [ $IPV6 == "1" ]; then
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display_c RED "ip6tables command not found. Please make sure you have the iptables"
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display_c RED "installed (package or source) and you have the IP6TABLES option properly"
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display_c RED "defined in the 'options' file."
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exit 3
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fi
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iptables_rules_flush ipv4
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if [ -s "$BASEDIR/include/ipv4_custom_flush" ]; then
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display_c YELLOW "Loading custom flush rules..."
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. "$BASEDIR/include/ipv4_custom_flush"
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fi
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if [ -x "$PRERUN" ]; then
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$PRERUN
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fi
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if [ "$MODULES_LOAD" ]; then
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display_c YELLOW "Loading modules: " N
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for i in $MODULES_LOAD; do
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display_c BLUE "$i " N
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${MODPROBE} $i
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done
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echo -ne "\n"
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fi
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if [ "$STATE_TYPE" ]; then
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case $STATE_TYPE in
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conntrack|CONNTRACK|*)
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M_STATE="-m conntrack"
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C_STATE="--ctstate"
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;;
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state|STATE)
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M_STATE="-m state"
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C_STATE="--state"
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esac
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else
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M_STATE="-m conntrack"
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C_STATE="--ctstate"
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fi
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$IPTABLES -A INPUT -i lo -j ACCEPT
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$IPTABLES -A OUTPUT -o lo -j ACCEPT
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if [ -s "$BASEDIR/include/ipv4_custom_trust" ]; then
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display_c YELLOW "Loading custom trust rules..."
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. "$BASEDIR/include/ipv4_custom_trust"
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fi
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if [ "$TRUSTEDIP" ]; then
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display_c YELLOW "Adding trusted IP: " N
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for i in $TRUSTEDIP; do
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echo -n "$i "
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$IPTABLES -A INPUT -s $i -j ACCEPT
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$IPTABLES -A OUTPUT -d $i -j ACCEPT
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done
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echo -ne "\n"
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fi
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if [ "$CLAMPMSS" ]; then
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display_c YELLOW "Clamping MSS to PMTU..."
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for i in $CLAMPMSS; do
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$IPTABLES -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS \
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--clamp-mss-to-pmtu -o $i -m tcpmss --mss 1400:1536
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$IPTABLES -A OUTPUT -p tcp --tcp-flags SYN,RST SYN -j TCPMSS \
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--clamp-mss-to-pmtu -o $i -m tcpmss --mss 1400:1536
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# This is necessary to make sure that PMTU works
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#$IPTABLES -A OUTPUT -p icmp --icmp-type time-exceeded \
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# -o $i -j ACCEPT
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#$IPTABLES -A INPUT -p icmp --icmp-type time-exceeded \
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# -i $i -j ACCEPT
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#$IPTABLES -A OUTPUT -p icmp --icmp-type fragmentation-needed \
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# -o $i -j ACCEPT
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#$IPTABLES -A INPUT -p icmp --icmp-type fragmentation-needed \
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# -i $i -j ACCEPT
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done
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echo -en "\n"
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fi
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if [ "$DNS_REQUESTS_OUT" ]; then
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display_c YELLOW "Adding DNS reply allows for trusted DNS servers.."
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for i in $DNS_REQUESTS_OUT; do
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if [[ "$i" =~ "|" ]]; then
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IFS_OLD=${IFS};IFS=\|
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DNSREQ=($i)
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IFS=${IFS_OLD}
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SRCIF=${DNSREQ[0]}
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DNSIP_NUM=${#DNSREQ[@]}
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DNSIP_COUNT_CURR=1
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for ((i=$DNSIP_COUNT_CURR; i <= $DNSIP_NUM; i++)); do
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if [ ${DNSREQ[$i]} ]; then
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${IPTABLES} -A INPUT -i ${SRCIF} -p udp --sport 53 -s ${DNSREQ[$i]} --destination-port 1024:65535 -j ACCEPT
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fi
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done
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else
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${IPTABLES} -A INPUT -i $i -p udp --sport 53 --destination-port 1024:65535 -j ACCEPT
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fi
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done
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fi
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if [ -s "$BASEDIR/include/ipv4_custom_blockip" ]; then
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display_c YELLOW "Loading custom ip block rules..."
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. "$BASEDIR/include/ipv4_custom_blockip"
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fi
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if [ "$BLOCKEDIP" ]; then
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display_c YELLOW "Adding blocked IPs... "
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for i in `grep -v "\#" $BLOCKEDIP`; do
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#echo -n "$i "
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if [[ "$i" =~ "|" ]]; then
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IFS_OLD=${IFS};IFS=\|
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ADVBLKIP=($i)
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IFS=${IFS_OLD}
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SRCIF=${ADVBLKIP[0]}
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SRCIP=${ADVBLKIP[1]}
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SRCPORT=${ADVBLKIP[2]}
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DSTIF=${ADVBLKIP[3]}
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DSTIP=${ADVBLKIP[4]}
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DSTPORT=${ADVBLKIP[5]}
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DIRECTION=${ADVBLKIP[6]}
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PROTO=${ADVBLKIP[7]}
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if [ "$SRCIF" ]; then
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SRCIF="-i ${SRCIF} "
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fi
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if [ "$SRCIP" ]; then
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SRCIP="-s ${SRCIP} "
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fi
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if [ "$SRCPORT" ]; then
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SRCPORT="--sport ${SRCPORT/-/:} "
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fi
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if [ "$DSTIF" ]; then
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DSTIF="-o ${DSTIF} "
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fi
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if [ "$DSTIP" ]; then
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DSTIP="-d ${DSTIP} "
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fi
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if [ "$DSTPORT" ]; then
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DSTPORT="--dport ${DSTPORT/-/:} "
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fi
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if [ "$PROTO" ]; then
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case $PROTO in
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TCP|tcp) PROTO="-p tcp";;
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UDP|udp) PROTO="-p udp";;
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*) PROTO="-p ${PROTO}";;
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esac
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fi
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case $DIRECTION in
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IN) DIRECTION="INPUT" ;;
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OUT) DIRECTION="OUTPUT" ;;
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FWD) DIRECTION="FORWARD" ;;
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*) DIRECTION="INPUT" ;;
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esac
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${IPTABLES} -A ${DIRECTION} ${PROTO} ${SRCIF} ${SRCIP} ${SRCPORT} ${DSTIF} ${DSTIP} ${DSTPORT} -j DROP
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else
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$IPTABLES -A INPUT -s $i -j DROP
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$IPTABLES -A OUTPUT -d $i -j DROP
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fi
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done
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fi
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if [ "$BLOCK_OUTGOING_RFC1918" ]; then
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display_c YELLOW "Blocking RFC1918 space going out on: " N
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for i in $BLOCK_OUTGOING_RFC1918; do
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display_c BLUE "$i " N
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for x in $RFC1918_SPACE; do
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$IPTABLES -A INPUT -i $i -s $x -j DROP
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$IPTABLES -A FORWARD -i $i -s $x -j DROP
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done
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done
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echo -ne "\n"
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unset i x
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fi
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if [ "$BLOCK_INCOMING_RFC1918" ]; then
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display_c YELLOW "Blocking RFC1918 space coming in on: " N
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for i in $BLOCK_INCOMING_RFC1918; do
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display_c BLUE "$i " N
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for x in $RFC1918_SPACE; do
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$IPTABLES -A INPUT -i $i -s $x -j DROP
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$IPTABLES -A FORWARD -i $i -s $x -j DROP
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done
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done
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echo -ne "\n"
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unset i x
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fi
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if [ "$STRIPECN" ]; then
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display_c YELLOW "Stripping ECN off of TCP packets to " N
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for i in $STRIPECN; do
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echo -en "$i "
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$IPTABLES -A PREROUTING -t mangle -p tcp -d $i -j ECN \
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--ecn-tcp-remove
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done
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echo -ne "\n"
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fi
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if [ -s "$BASEDIR/include/ipv4_custom_mssclamp" ]; then
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display_c YELLOW "Loading custom MSS Clamp rules..."
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. "$BASEDIR/include/ipv4_custom_mssclamp"
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fi
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if [ "$HACK_IPV4" ]; then
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apply_ipv4_hack $HACK_IPV4
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fi
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if [ -s "$BASEDIR/include/ipv4_custom_conntrack" ]; then
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display_c YELLOW "Loading custom conntrack rules..."
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. "$BASEDIR/include/ipv4_custom_conntrack"
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fi
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if [ "$CONNTRACK" ]; then
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$IPTABLES -A INPUT ${M_STATE} ${C_STATE} NEW -j ACCEPT
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$IPTABLES -A INPUT ${M_STATE} ${C_STATE} RELATED,ESTABLISHED -j ACCEPT
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$IPTABLES -A FORWARD ${M_STATE} ${C_STATE} RELATED,ESTABLISHED -j ACCEPT
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#$IPTABLES -A FORWARD ${M_STATE} ${C_STATE} NEW -j ACCEPT
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$IPTABLES -A OUTPUT ${M_STATE} ${C_STATE} RELATED,ESTABLISHED -j ACCEPT
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$IPTABLES -A OUTPUT ${M_STATE} ${C_STATE} NEW -j ACCEPT
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$IPTABLES -A INPUT ${M_STATE} ${C_STATE} INVALID -j DROP
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$IPTABLES -A OUTPUT ${M_STATE} ${C_STATE} INVALID -j DROP
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$IPTABLES -A FORWARD ${M_STATE} ${C_STATE} INVALID -j DROP
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fi
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if [ -s "$BASEDIR/include/ipv4_custom_blockoutports" ]; then
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display_c YELLOW "Loading custom blocked outbound port rules..."
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. "$BASEDIR/include/ipv4_custom_blockoutports"
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fi
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if [ "$BLOCKTCPPORTS" ] || [ "$BLOCKUDPPORTS" ]; then
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display_c YELLOW "Blocking outbound port: " N
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if [ "$BLOCKTCPPORTS" ]; then
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for i in $BLOCKTCPPORTS; do
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echo -en "${PURPLE}TCP${DEFAULT_COLOR}/${GREEN}$i "
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$IPTABLES -A OUTPUT -p tcp --dport $i --syn -j DROP
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done
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fi
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if [ "$BLOCKUDPPORTS" ]; then
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for i in $BLOCKUDPPORTS; do
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echo -en "${BLUE}UDP${DEFAULT_COLOR}/${GREEN}$i "
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$IPTABLES -A OUTPUT -p udp --dport $i -j DROP
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done
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fi
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reset_color
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fi
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if [ -s "$BASEDIR/include/ipv4_custom_allowedports" ]; then
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display_c YELLOW "Loading custom allowed port rules..."
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. "$BASEDIR/include/ipv4_custom_allowedports"
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fi
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if [ "$IPTABLES_MULTIPORT" ]; then
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case $IPTABLES_MULTIPORT in
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auto|AUTO|Auto)
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if `${MODPROBE} ${NF_MULTIPORT} &>/dev/null`; then
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display_c YELLOW "Multiport successfully loaded."
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IPTABLES_MULTIPORT="yes"
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else
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display_c RED "Multiport was not loaded successfully. Disabling."
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IPTABLES_MULTIPORT="no"
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fi ;;
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yes|YES|Yes)
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${MODPROBE} ${NF_MULTIPORT}
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display_c PURPLE "Multiport loading forced, not error checking."
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IPTABLES_MULTIPORT="yes" ;;
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*) IPTABLES_MULTIPORT="no"
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esac
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fi
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if [ "$TCPPORTS" ] || [ "$UDPPORTS" ]; then
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display_c YELLOW "Adding allowed port: " N
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if [ "$TCPPORTS" ]; then
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if [ "$IPTABLES_MULTIPORT" == "yes" ] && [ "$NF_MULTIPORT_MAX_PORTS" ]; then
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TCPPORTS=($TCPPORTS)
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PORTS_COUNT=${#TCPPORTS[@]}
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PORTS_COUNT_CURR=0
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while (( "$PORTS_COUNT_CURR" < "$PORTS_COUNT" )); do
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for ((i=$PORTS_COUNT_CURR; i <=(($PORTS_COUNT_CURR+(($NF_MULTIPORT_MAX_PORTS-1)))); i++)); do
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if [ ${TCPPORTS[$i]} ]; then
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PORTS="${PORTS},${TCPPORTS[$i]}"
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fi
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done
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echo -en "${PURPLE}Multiport-TCP${DEFAULT_COLOR}/${GREEN}${PORTS#,} "
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$IPTABLES -A INPUT -p tcp -m multiport --dports ${PORTS#,} -j ACCEPT
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unset PORTS
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PORTS_COUNT_CURR=$i
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done
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unset i PORTS PORTS_COUNT_CURR PORTS_COUNT
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else
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for i in $TCPPORTS; do
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echo -en "${PURPLE}TCP${DEFAULT_COLOR}/${GREEN}$i "
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$IPTABLES -A INPUT -p tcp --dport $i -j ACCEPT
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done
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fi
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fi
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if [ "$UDPPORTS" ]; then
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for i in $UDPPORTS; do
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echo -en "${BLUE}UDP${DEFAULT_COLOR}/${GREEN}$i "
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#$IPTABLES -A INPUT -p udp --dport $i -j ACCEPT
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$IPTABLES -A OUTPUT -p udp --sport 1:65535 --dport $i -j ACCEPT
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$IPTABLES -A INPUT -p udp --dport $i --sport 1:65535 -j ACCEPT
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$IPTABLES -A INPUT -p udp --sport $i --dport 1:65535 -j ACCEPT
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done
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fi
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reset_color
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fi
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if [ -s "$BASEDIR/include/ipv4_custom_proto" ]; then
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display_c YELLOW "Loading custom protocol rules..."
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. "$BASEDIR/include/ipv4_custom_proto"
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fi
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if [ "$ALLOWEDPROTO" ]; then
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display_c YELLOW "Adding allowed protocols: " N
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for i in $ALLOWEDPROTO; do
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echo -n "$i "
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$IPTABLES -A INPUT -p $i -j ACCEPT
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$IPTABLES -A OUTPUT -p $i -j ACCEPT
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done
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reset_color
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fi
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if [ -s "$BASEDIR/include/ipv4_custom_notrack" ]; then
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display_c YELLOW "Loading custom NOTRACK rules..."
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. "$BASEDIR/include/ipv4_custom_notrack"
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fi
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if [ $CONNTRACK ]; then
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for i in $DONTTRACK; do
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$IPTABLES -t raw -I PREROUTING -s $i -j NOTRACK
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$IPTABLES -t raw -I PREROUTING -d $i -j NOTRACK
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$IPTABLES -t raw -I OUTPUT -s $i -j NOTRACK
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$IPTABLES -t raw -I OUTPUT -d $i -j NOTRACK
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done
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fi
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if [ -s "$BASEDIR/include/ipv4_custom_routing" ]; then
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display_c YELLOW "Loading custom routing rules..."
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. "$BASEDIR/include/ipv4_custom_routing"
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fi
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if [ $ROUTING ]; then
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display_c YELLOW "Adding route: "
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for i in `grep -v "\#" $ROUTING`; do
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ROUTE=( ${i//:/ } )
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FWINT1=${ROUTE[0]}
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FWINT2=${ROUTE[2]}
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FWIP1=${ROUTE[1]}
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FWIP2=${ROUTE[3]}
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if [ -e "/proc/sys/net/ipv4/conf/$FWINT1/forwarding" ]; then
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echo 1 > /proc/sys/net/ipv4/conf/$FWINT1/forwarding
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fi
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if [ -e "/proc/sys/net/ipv4/conf/$FWINT2/forwarding" ]; then
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echo 1 > /proc/sys/net/ipv4/conf/$FWINT2/forwarding
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fi
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$IPTABLES -A FORWARD -i $FWINT1 -o $FWINT2 \
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-s $FWIP1 -d $FWIP2 -j ACCEPT
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if [ ${ROUTE[4]} == "1" ]; then
|
|
display_c DEFAULT "\t${GREEN}$FWINT1:${PURPLE}$FWIP1${AQUA}<->${BLUE}$FWINT2:$FWIP2"
|
|
$IPTABLES -A FORWARD -o $FWINT1 -i $FWINT2 \
|
|
-d $FWIP1 -s $FWIP2 -j ACCEPT
|
|
else
|
|
display_c DEFAULT "\t${GREEN}$FWINT1:${PURPLE}$FWIP1${AQUA}->${BLUE}$FWINT2:$FWIP2"
|
|
fi
|
|
done
|
|
echo -ne "\n"
|
|
fi
|
|
|
|
|
|
if [ -s "$BASEDIR/include/ipv4_custom_portforward" ]; then
|
|
display_c YELLOW "Loading custom port forwarding rules..."
|
|
. "$BASEDIR/include/ipv4_custom_portforward"
|
|
fi
|
|
|
|
if [ "$PORTFW" ] && [ "$NAT" ]; then
|
|
display_c YELLOW "Adding port forward for:"
|
|
for i in `grep -v "\#" $PORTFW`; do
|
|
PORTADD=( ${i//:/ } )
|
|
$IPTABLES -A PREROUTING -t nat -i ${PORTADD[0]} -p ${PORTADD[4]} -s ${PORTADD[1]} \
|
|
--dport ${PORTADD[3]} -d ${PORTADD[2]} -j DNAT --to \
|
|
${PORTADD[5]}:${PORTADD[6]}
|
|
$IPTABLES -A INPUT -p ${PORTADD[4]} ${M_STATE} ${C_STATE} NEW -s ${PORTADD[1]} \
|
|
--dport ${PORTADD[3]} -d ${PORTADD[2]} -i ${PORTADD[0]} -j ACCEPT
|
|
display_c DEFAULT "\t${GREEN}${PORTADD[0]}:${BLUE}${PORTADD[1]}:${PURPLE}${PORTADD[2]}:${PORTADD[3]}:${PORTADD[4]}${AQUA}->${BLUE}${PORTADD[5]}:${PORTADD[6]} "
|
|
done
|
|
reset_color
|
|
fi
|
|
|
|
if [ "$LANDHCPSERVER" ]; then
|
|
for i in $LANDHCPSERVER; do
|
|
$IPTABLES -A INPUT -i $i -s 0.0.0.0 -j ACCEPT
|
|
$IPTABLES -A INPUT -i $i -p udp --dport 67:68 -j ACCEPT
|
|
$IPTABLES -A INPUT -i $i -p tcp --dport 67:68 -j ACCEPT
|
|
$IPTABLES -A OUTPUT -o $i -p udp --dport 67:68 -j ACCEPT
|
|
$IPTABLES -A OUTPUT -o $i -p tcp --dport 67:68 -j ACCEPT
|
|
$IPTABLES -A INPUT -i $i -p udp -d 255.255.255.255 --dport 67:68 -j ACCEPT
|
|
$IPTABLES -A INPUT -i $i -p tcp -d 255.255.255.255 --dport 67:68 -j ACCEPT
|
|
$IPTABLES -A OUTPUT -o $i -p udp -d 255.255.255.255 --dport 67:68 -j ACCEPT
|
|
$IPTABLES -A OUTPUT -o $i -p tcp -d 255.255.255.255 --dport 67:68 -j ACCEPT
|
|
done
|
|
fi
|
|
|
|
if [ -s "$BASEDIR/include/ipv4_custom_mark" ]; then
|
|
display_c YELLOW "Loading custom mark rules..."
|
|
. "$BASEDIR/include/ipv4_custom_mark"
|
|
fi
|
|
|
|
if [ -r "$IPv4_MARK" ]; then
|
|
display_c YELLOW "Adding mark: "
|
|
for i in `grep -v "\#" $IPv4_MARK`; do
|
|
MARK=( ${i//|/ } )
|
|
INIF=${MARK[0]}
|
|
INIP=${MARK[1]}
|
|
DSTIP=${MARK[2]}
|
|
IPMARK=${MARK[3]}
|
|
|
|
case $INIP in
|
|
!*) INNEG="!"
|
|
INIP=${INIP#\!};;
|
|
esac
|
|
case $DSTIP in
|
|
!*) DSTNEG="!"
|
|
DSTIP=${DSTIP#\!};;
|
|
esac
|
|
|
|
$IPTABLES -t mangle -A PREROUTING -i ${INIF} ${INNEG} -s ${INIP} \
|
|
${DSTNEG} -d ${DSTIP} -j MARK --set-mark=${IPMARK}
|
|
display_c DEFAULT "\t${GREEN}${INNEG}${INIF}:${PURPLE}${INIP}${AQUA}->${BLUE}${DSTNEG}${DSTIP}:${RED}${IPMARK}"
|
|
unset INNEG DSTNEG
|
|
done
|
|
echo -ne "\n"
|
|
fi
|
|
|
|
|
|
|
|
if [ -s "$BASEDIR/include/ipv4_custom_nat" ]; then
|
|
display_c YELLOW "Loading custom nat rules..."
|
|
. "$BASEDIR/include/ipv4_custom_nat"
|
|
fi
|
|
|
|
if [ $NAT ]; then
|
|
if [ "$NAT_RANGE" ]; then
|
|
display_c YELLOW "Adding NAT rule:"
|
|
unset INIF_EXISTS FWDIF_EXISTS
|
|
for i in $NAT_RANGE; do
|
|
NAT_RULE=( ${i//:/ } )
|
|
case ${NAT_RULE[0]} in
|
|
SNAT)
|
|
$IPTABLES -A POSTROUTING -t nat -s ${NAT_RULE[2]} -j SNAT \
|
|
-o ${NAT_RULE[3]} --to-source ${NAT_RULE[4]}
|
|
display_c DEFAULT "\t${GREEN}SNAT:${PURPLE}${NAT_RULE[1]}:${NAT_RULE[2]}${AQUA}->${BLUE}${NAT_RULE[3]}:${NAT_RULE[4]}"
|
|
if [[ ! "$INIF_EXISTS" =~ "${NAT_RULE[1]}:${NAT_RULE[2]}" ]]; then
|
|
$IPTABLES -A INPUT -p icmp --icmp-type time-exceeded -i ${NAT_RULE[1]} \
|
|
-s ${NAT_RULE[2]} -j ACCEPT
|
|
$IPTABLES -A INPUT -p icmp --icmp-type fragmentation-needed -i ${NAT_RULE[1]} \
|
|
-s ${NAT_RULE[2]} -j ACCEPT
|
|
INIF_EXISTS="${INIF_EXISTS} ${NAT_RULE[1]}:${NAT_RULE[2]}"
|
|
fi
|
|
# This code seems pointless, anyone else have an opinion?
|
|
#if [[ ! "$OUTIF_EXISTS" =~ "${NAT_RULE[3]}:${NAT_RULE[4]}" ]]; then
|
|
# $IPTABLES -A OUTPUT -p icmp --icmp-type time-exceeded -o ${NAT_RULE[3]} -j ACCEPT
|
|
# $IPTABLES -A OUTPUT -p icmp --icmp-type fragmentation-needed -o ${NAT_RULE[3]} -j ACCEPT
|
|
# OUTIF_EXISTS="${OUTIF_EXISTS} ${NAT_RULE[3]}:${NAT_RULE[4]}"
|
|
#fi
|
|
if [[ ! "$FWDIF_EXISTS" =~ "${NAT_RULE[1]}:${NAT_RULE[2]}:${NAT_RULE[3]}" ]]; then
|
|
$IPTABLES -A FORWARD -p icmp --icmp-type time-exceeded -i ${NAT_RULE[1]} -s ${NAT_RULE[2]} \
|
|
-o ${NAT_RULE[3]} -j ACCEPT
|
|
$IPTABLES -A FORWARD -p icmp --icmp-type fragmentation-needed -i ${NAT_RULE[1]} -s ${NAT_RULE[2]} \
|
|
-o ${NAT_RULE[3]} -j ACCEPT
|
|
FWDIF_EXISTS="${FWDIF_EXISTS} ${NAT_RULE[1]}:${NAT_RULE[2]}:${NAT_RULE[3]}"
|
|
fi
|
|
;;
|
|
MASQ)
|
|
$IPTABLES -A POSTROUTING -t nat -s ${NAT_RULE[2]} -j MASQUERADE -o ${NAT_RULE[3]}
|
|
display_c DEFAULT "\t${GREEN}MASQ:${PURPLE}${NAT_RULE[2]}${AQUA}->${BLUE}${NAT_RULE[3]}"
|
|
if [[ ! "$INIF_EXISTS" =~ "${NAT_RULE[1]}:${NAT_RULE[2]}" ]]; then
|
|
$IPTABLES -A INPUT -p icmp --icmp-type time-exceeded -i ${NAT_RULE[1]} \
|
|
-s ${NAT_RULE[2]} -j ACCEPT
|
|
$IPTABLES -A INPUT -p icmp --icmp-type fragmentation-needed -i ${NAT_RULE[1]} \
|
|
-s ${NAT_RULE[2]} -j ACCEPT
|
|
INIF_EXISTS="${INIF_EXISTS} ${NAT_RULE[1]}:${NAT_RULE[2]}"
|
|
fi
|
|
if [[ ! "$FWDIF_EXISTS" =~ "${NAT_RULE[1]}:${NAT_RULE[2]}:${NAT_RULE[3]}" ]]; then
|
|
$IPTABLES -A FORWARD -p icmp --icmp-type time-exceeded -i ${NAT_RULE[1]} -s ${NAT_RULE[2]} \
|
|
-o ${NAT_RULE[3]} -j ACCEPT
|
|
$IPTABLES -A FORWARD -p icmp --icmp-type fragmentation-needed -i ${NAT_RULE[1]} -s ${NAT_RULE[2]} \
|
|
-o ${NAT_RULE[3]} -j ACCEPT
|
|
FWDIF_EXISTS="${FWDIF_EXISTS} ${NAT_RULE[1]}:${NAT_RULE[2]}:${NAT_RULE[3]}"
|
|
fi
|
|
;;
|
|
NETMAP)
|
|
$IPTABLES -A PREROUTING -t nat -s ${NAT_RULE[2]} -j NETMAP --to ${NAT_RULE[4]}
|
|
display_c DEFAULT "\t${GREEN}NETMAP:${PURPLE}${NAT_RULE[2]}${AQUA}->${BLUE}${NAT_RULE[4]}"
|
|
if [[ ! "$INIF_EXISTS" =~ "${NAT_RULE[1]}:${NAT_RULE[2]}" ]]; then
|
|
$IPTABLES -A INPUT -p icmp --icmp-type time-exceeded -i ${NAT_RULE[1]} \
|
|
-s ${NAT_RULE[2]} -j ACCEPT
|
|
$IPTABLES -A INPUT -p icmp --icmp-type fragmentation-needed -i ${NAT_RULE[1]} \
|
|
-s ${NAT_RULE[2]} -j ACCEPT
|
|
INIF_EXISTS="${INIF_EXISTS} ${NAT_RULE[1]}:${NAT_RULE[2]}"
|
|
fi
|
|
if [[ ! "$FWDIF_EXISTS" =~ "${NAT_RULE[1]}:${NAT_RULE[2]}:${NAT_RULE[3]}" ]]; then
|
|
$IPTABLES -A FORWARD -p icmp --icmp-type time-exceeded -i ${NAT_RULE[1]} -s ${NAT_RULE[2]} \
|
|
-o ${NAT_RULE[3]} -j ACCEPT
|
|
$IPTABLES -A FORWARD -p icmp --icmp-type fragmentation-needed -i ${NAT_RULE[1]} -s ${NAT_RULE[2]} \
|
|
-o ${NAT_RULE[3]} -j ACCEPT
|
|
FWDIF_EXISTS="${FWDIF_EXISTS} ${NAT_RULE[1]}:${NAT_RULE[2]}:${NAT_RULE[3]}"
|
|
fi
|
|
;;
|
|
*) display_c RED "Invalid NAT rule in NAT_RANGE" ;;
|
|
esac
|
|
done
|
|
reset_color
|
|
fi
|
|
fi
|
|
|
|
$IPTABLES --policy INPUT ACCEPT
|
|
$IPTABLES --policy OUTPUT ACCEPT
|
|
$IPTABLES --policy FORWARD DROP
|
|
|
|
|
|
if [ -s "$BASEDIR/include/ipv4_custom_blockincoming" ]; then
|
|
display_c YELLOW "Loading custom incoming blocked rules..."
|
|
. "$BASEDIR/include/ipv4_custom_blockincoming"
|
|
fi
|
|
|
|
if [ $BLOCKINCOMING ]; then
|
|
$IPTABLES -A INPUT -p tcp --syn -j DROP
|
|
$IPTABLES -A INPUT -p udp -j DROP
|
|
fi
|
|
|
|
|
|
#================[IPv6]================
|
|
if [ $IPV6 ]; then
|
|
iptables_rules_flush ipv6
|
|
if [ -s "$BASEDIR/include/ipv6_custom_flush" ]; then
|
|
display_c YELLOW "Loading custom IPv6 flush rules..."
|
|
. "$BASEDIR/include/ipv6_custom_flush"
|
|
fi
|
|
|
|
display_c YELLOW "Adding trusted IPv6: " N
|
|
|
|
$IP6TABLES -A INPUT -i lo -j ACCEPT
|
|
$IP6TABLES -A OUTPUT -o lo -j ACCEPT
|
|
|
|
if [ -s "$BASEDIR/include/ipv6_custom_trust" ]; then
|
|
display_c YELLOW "Loading custom IPv6 trust rules..."
|
|
. "$BASEDIR/include/ipv6_custom_trust"
|
|
fi
|
|
if [ "$IPV6_TRUSTED" ]; then
|
|
for i in $IPV6_TRUSTED; do
|
|
echo -n "$i "
|
|
$IP6TABLES -A INPUT -s $i -j ACCEPT
|
|
$IP6TABLES -A OUTPUT -d $i -j ACCEPT
|
|
done
|
|
fi
|
|
reset_color
|
|
|
|
if [ -s "$BASEDIR/include/ipv6_custom_blockip" ]; then
|
|
display_c YELLOW "Loading custom ip block rules..."
|
|
. "$BASEDIR/include/ipv6_custom_blockip"
|
|
fi
|
|
|
|
if [ "$IPV6_DNS_REQUESTS_OUT" ]; then
|
|
display_c YELLOW "Adding IPv6 DNS reply allows for trusted DNS servers.."
|
|
for i in $DNS_REQUESTS_OUT; do
|
|
if [[ "$i" =~ "|" ]]; then
|
|
IFS_OLD=${IFS};IFS=\|
|
|
DNSREQ=($i)
|
|
IFS=${IFS_OLD}
|
|
SRCIF=${DNSREQ[0]}
|
|
DNSIP_NUM=${#DNSREQ[@]}
|
|
DNSIP_COUNT_CURR=1
|
|
for ((i=$DNSIP_COUNT_CURR; i <= $DNSIP_NUM; i++)); do
|
|
if [ ${DNSREQ[$i]} ]; then
|
|
${IP6TABLES} -A INPUT -i ${SRCIF} -p udp --sport 53 -s ${DNSREQ[$i]} --destination-port 1024:65535 -j ACCEPT
|
|
fi
|
|
done
|
|
else
|
|
${IP6TABLES} -A INPUT -i $i -p udp --sport 53 --destination-port 1024:65535 -j ACCEPT
|
|
fi
|
|
done
|
|
fi
|
|
if [ -s "$BASEDIR/include/ipv6_custom_blockoutports" ]; then
|
|
display_c YELLOW "Loading custom IPv6 blocked outbound port rules..."
|
|
. "$BASEDIR/include/ipv6_custom_blockoutports"
|
|
fi
|
|
|
|
if [ "$IPV6_BLOCKEDIP" ]; then
|
|
display_c YELLOW "Adding blocked IPv6 addresses... "
|
|
for i in `grep -v "\#" $IPV6_BLOCKEDIP`; do
|
|
if [[ "$i" =~ "|" ]]; then
|
|
IFS_OLD=${IFS};IFS=\|
|
|
ADVBLKIP=($i)
|
|
IFS=${IFS_OLD}
|
|
SRCIF=${ADVBLKIP[0]}
|
|
SRCIP=${ADVBLKIP[1]}
|
|
SRCPORT=${ADVBLKIP[2]}
|
|
DSTIF=${ADVBLKIP[3]}
|
|
DSTIP=${ADVBLKIP[4]}
|
|
DSTPORT=${ADVBLKIP[5]}
|
|
DIRECTION=${ADVBLKIP[6]}
|
|
PROTO=${ADVBLKIP[7]}
|
|
if [ "$SRCIF" ]; then
|
|
SRCIF="-i ${SRCIF} "
|
|
fi
|
|
if [ "$SRCIP" ]; then
|
|
SRCIP="-s ${SRCIP} "
|
|
fi
|
|
if [ "$SRCPORT" ]; then
|
|
SRCPORT="--sport ${SRCPORT/-/:} "
|
|
fi
|
|
if [ "$DSTIF" ]; then
|
|
DSTIF="-o ${DSTIF} "
|
|
fi
|
|
if [ "$DSTIP" ]; then
|
|
DSTIP="-d ${DSTIP} "
|
|
fi
|
|
if [ "$DSTPORT" ]; then
|
|
DSTPORT="--dport ${DSTPORT/-/:} "
|
|
fi
|
|
if [ "$PROTO" ]; then
|
|
case $PROTO in
|
|
TCP|tcp) PROTO="-p tcp";;
|
|
UDP|udp) PROTO="-p udp";;
|
|
*) PROTO="-p ${PROTO}";;
|
|
esac
|
|
fi
|
|
case $DIRECTION in
|
|
IN) DIRECTION="INPUT" ;;
|
|
OUT) DIRECTION="OUTPUT" ;;
|
|
FWD) DIRECTION="FORWARD" ;;
|
|
*) DIRECTION="INPUT" ;;
|
|
esac
|
|
${IP6TABLES} -A ${DIRECTION} ${PROTO} ${SRCIF} ${SRCIP} ${SRCPORT} ${DSTIF} ${DSTIP} ${DSTPORT} -j DROP
|
|
else
|
|
$IP6TABLES -A INPUT -s $i -j DROP
|
|
$IP6TABLES -A OUTPUT -d $i -j DROP
|
|
fi
|
|
done
|
|
fi
|
|
|
|
if [ -s "$BASEDIR/include/ipv6_custom_mssclamp" ]; then
|
|
display_c YELLOW "Loading custom IPv6 MSS Clamp rules..."
|
|
. "$BASEDIR/include/ipv6_custom_mssclamp"
|
|
fi
|
|
|
|
if [ "$IPV6_CLAMPMSS" ]; then
|
|
display_c YELLOW "Clamping IPV6 MSS to PMTU..."
|
|
for i in $IPV6_CLAMPMSS; do
|
|
$IP6TABLES -A FORWARD -p tcp --tcp-flags SYN,RST SYN \
|
|
-j TCPMSS --clamp-mss-to-pmtu -o $i -m tcpmss \
|
|
--mss 1280:1536
|
|
$IP6TABLES -A OUTPUT -p tcp --tcp-flags SYN,RST SYN \
|
|
-j TCPMSS --clamp-mss-to-pmtu -o $i -m tcpmss \
|
|
--mss 1280:1536
|
|
# This is necessary to make sure that PMTU works
|
|
$IP6TABLES -A OUTPUT -p icmpv6 --icmpv6-type time-exceeded \
|
|
-o $i -j ACCEPT
|
|
$IP6TABLES -A INPUT -p icmpv6 --icmpv6-type time-exceeded \
|
|
-i $i -j ACCEPT
|
|
$IP6TABLES -A OUTPUT -p icmpv6 --icmpv6-type packet-too-big \
|
|
-o $i -j ACCEPT
|
|
$IP6TABLES -A INPUT -p icmpv6 --icmpv6-type packet-too-big \
|
|
-i $i -j ACCEPT
|
|
done
|
|
fi
|
|
|
|
if [ -s "$BASEDIR/include/ipv6_custom_allowedports" ]; then
|
|
display_c YELLOW "Loading custom IPv6 allowed port rules..."
|
|
. "$BASEDIR/include/ipv6_custom_allowedports"
|
|
fi
|
|
if [ "$IPV6_TCPPORTS" ] || [ "$IPV6_UDPPORTS" ]; then
|
|
display_c YELLOW "Adding allowed IPv6 port: " N
|
|
if [ "$IPV6_TCPPORTS" ]; then
|
|
if [ "$IPTABLES_MULTIPORT" == "yes" ] && [ "$NF_MULTIPORT_MAX_PORTS" ]; then
|
|
IPV6_TCPPORTS=($IPV6_TCPPORTS)
|
|
PORTS_COUNT=${#IPV6_TCPPORTS[@]}
|
|
PORTS_COUNT_CURR=0
|
|
while (( "$PORTS_COUNT_CURR" < "$PORTS_COUNT" )); do
|
|
for ((i=$PORTS_COUNT_CURR; i <=(($PORTS_COUNT_CURR+(($NF_MULTIPORT_MAX_PORTS-1)))); i++)); do
|
|
if [ ${IPV6_TCPPORTS[$i]} ]; then
|
|
PORTS="${PORTS},${IPV6_TCPPORTS[$i]}"
|
|
fi
|
|
done
|
|
echo -en "${PURPLE}Multiport-TCP${DEFAULT_COLOR}/${GREEN}${PORTS#,} "
|
|
$IP6TABLES -A INPUT -p tcp -m multiport --dports ${PORTS#,} -j ACCEPT
|
|
unset PORTS
|
|
PORTS_COUNT_CURR=$i
|
|
done
|
|
unset i PORTS PORTS_COUNT_CURR PORTS_COUNT
|
|
fi
|
|
else
|
|
for i in $IPV6TCP; do
|
|
echo -en "${PURPLE}TCP${DEFAULT_COLOR}/${GREEN}$i "
|
|
$IP6TABLES -A INPUT -p tcp --dport $i -j ACCEPT
|
|
done
|
|
fi
|
|
if [ "$IPV6_UDPPORTS" ]; then
|
|
for i in $IPV6_UDPPORTS; do
|
|
echo -en "${BLUE}UDP${DEFAULT_COLOR}/${GREEN}$i "
|
|
$IP6TABLES -A OUTPUT -p udp --sport 1:65535 --dport $i -j ACCEPT
|
|
$IP6TABLES -A INPUT -p udp --dport $i --sport 1:65535 -j ACCEPT
|
|
$IP6TABLES -A INPUT -p udp --sport $i --dport 1:65535 -j ACCEPT
|
|
done
|
|
fi
|
|
reset_color
|
|
fi
|
|
fi
|
|
|
|
if [ -s "$BASEDIR/include/ipv6_custom_mark" ]; then
|
|
display_c YELLOW "Loading custom IPv6 mark rules..."
|
|
. "$BASEDIR/include/ipv6_custom_mark"
|
|
fi
|
|
|
|
if [ -r "$IPV6_MARK" ]; then
|
|
display_c YELLOW "Adding IPv6 mark: "
|
|
for i in `grep -v "\#" $IPV6_MARK`; do
|
|
MARK=( ${i//|/ } )
|
|
INIF=${MARK[0]}
|
|
INIP=${MARK[1]}
|
|
DSTIP=${MARK[2]}
|
|
IPMARK=${MARK[3]}
|
|
|
|
case $INIP in
|
|
!*) INNEG="!"
|
|
INIP=${INIP#\!};;
|
|
esac
|
|
case $DSTIP in
|
|
!*) DSTNEG="!"
|
|
DSTIP=${DSTIP#\!};;
|
|
esac
|
|
|
|
${IP6TABLES} -t mangle -A PREROUTING -i ${INIF} ${INNEG} -s ${INIP} \
|
|
${DSTNEG} -d ${DSTIP} -j MARK --set-mark=${IPMARK}
|
|
display_c DEFAULT "\t${GREEN}${INNEG}${INIF};${PURPLE}${INIP}${AQUA}->${BLUE}${DSTNEG}${DSTIP};${RED}${IPMARK}"
|
|
unset INNEG DSTNEG
|
|
done
|
|
echo -ne "\n"
|
|
fi
|
|
|
|
if [ -s "$BASEDIR/include/ipv6_custom_conntrack" ]; then
|
|
display_c YELLOW "Loading custom IPv6 conntrack rules..."
|
|
. "$BASEDIR/include/ipv6_custom_conntrack"
|
|
fi
|
|
|
|
if [ "$IPV6_CONNTRACK" ]; then
|
|
$IP6TABLES -A INPUT ${M_STATE} ${C_STATE} NEW -j ACCEPT
|
|
$IP6TABLES -A INPUT ${M_STATE} ${C_STATE} RELATED,ESTABLISHED -j ACCEPT
|
|
$IP6TABLES -A FORWARD ${M_STATE} ${C_STATE} RELATED,ESTABLISHED -j ACCEPT
|
|
#$IP6TABLES -A FORWARD ${M_STATE} ${C_STATE} NEW -j ACCEPT
|
|
$IP6TABLES -A OUTPUT ${M_STATE} ${C_STATE} RELATED,ESTABLISHED -j ACCEPT
|
|
$IP6TABLES -A OUTPUT ${M_STATE} ${C_STATE} NEW -j ACCEPT
|
|
$IP6TABLES -A INPUT ${M_STATE} ${C_STATE} INVALID -j DROP
|
|
$IP6TABLES -A OUTPUT ${M_STATE} ${C_STATE} INVALID -j DROP
|
|
$IP6TABLES -A FORWARD ${M_STATE} ${C_STATE} INVALID -j DROP
|
|
fi
|
|
|
|
if [ $IPV6_ROUTEDCLIENTBLOCK ]; then
|
|
$IP6TABLES -A FORWARD -i $IPV6_INT -o $IPV6_LAN -p tcp --syn -j DROP
|
|
$IP6TABLES -A INPUT -i $IPV6_INT -p tcp --syn -j DROP
|
|
$IP6TABLES -A INPUT -i $IPV6_INT -p udp ! --dport 32768:65535 -j DROP
|
|
$IP6TABLES -A FORWARD -i $IPV6_INT -o $IPV6_LAN -p udp ! --dport 32768:65535 -j DROP
|
|
fi
|
|
|
|
|
|
|
|
if [ -s "$BASEDIR/include/ipv6_custom_routing" ]; then
|
|
display_c YELLOW "Loading custom IPv6 routing rules..."
|
|
. "$BASEDIR/include/ipv6_custom_routing"
|
|
fi
|
|
if [ "$IPV6_FORWARDRANGE" ]; then
|
|
for i in $IPV6_FORWARDRANGE; do
|
|
$IP6TABLES -A FORWARD -s $i -j ACCEPT
|
|
$IP6TABLES -A FORWARD -d $i -j ACCEPT
|
|
done
|
|
fi
|
|
|
|
if [ -s "$BASEDIR/include/ipv6_custom_blockincoming" ]; then
|
|
display_c YELLOW "Loading custom IPv6 incoming blocked port rules..."
|
|
. "$BASEDIR/include/ipv6_custom_blockincoming"
|
|
fi
|
|
if [ $IPV6_BLOCKINCOMING ]; then
|
|
$IP6TABLES -A INPUT -p tcp --syn -j DROP
|
|
$IP6TABLES -A INPUT -p udp -j DROP
|
|
fi
|
|
|
|
if [ $TWEAKS ]; then
|
|
for i in `grep -v "\#" $TWEAKS`; do
|
|
PROCOPT=( ${i//=/ } )
|
|
echo ${PROCOPT[1]} > /proc/sys/net/${PROCOPT[0]} &>/dev/null
|
|
done
|
|
fi
|
|
|
|
if [ -x $POSTRUN ]; then
|
|
$POSTRUN
|
|
fi
|