mirror of
https://github.com/vincentmli/bpfire.git
synced 2026-04-09 18:45:54 +02:00
5d1364bf86
commit 459bb750298c09990c0c8d4677f0f442887304d0 Author: Michael Tremer <michael.tremer@ipfire.org> Date: Sat Apr 26 14:30:44 2025 +0200 wireguard: Automatically apply MASQUERADE for peers with local address In this case we are the client and we cannot leak any local subnets. Signed-off-by: Michael Tremer <michael.tremer@ipfire.org> Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
582 lines
18 KiB
Bash
582 lines
18 KiB
Bash
#!/bin/sh
|
|
###############################################################################
|
|
# #
|
|
# IPFire.org - A linux based firewall #
|
|
# Copyright (C) 2007-2022 IPFire Team <info@ipfire.org> #
|
|
# #
|
|
# 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, or #
|
|
# (at your option) any later version. #
|
|
# #
|
|
# This program is distributed in the hope that it will be useful, #
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
|
|
# GNU General Public License for more details. #
|
|
# #
|
|
# You should have received a copy of the GNU General Public License #
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>. #
|
|
# #
|
|
###############################################################################
|
|
|
|
. /etc/sysconfig/rc
|
|
. ${rc_functions}
|
|
|
|
eval $(/usr/local/bin/readhash /var/ipfire/ppp/settings)
|
|
eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
|
|
eval $(/usr/local/bin/readhash /var/ipfire/optionsfw/settings)
|
|
if [ -r "/var/ipfire/tor/settings" ]; then
|
|
eval $(/usr/local/bin/readhash /var/ipfire/tor/settings)
|
|
fi
|
|
IFACE=`/bin/cat /var/ipfire/red/iface 2> /dev/null | /usr/bin/tr -d '\012'`
|
|
if [ -z $IFACE ]; then
|
|
IFACE="red0"
|
|
fi
|
|
|
|
if [ -f /var/ipfire/red/device ]; then
|
|
DEVICE=`/bin/cat /var/ipfire/red/device 2> /dev/null | /usr/bin/tr -d '\012'`
|
|
fi
|
|
|
|
NAT_MASK="0x0f000000"
|
|
|
|
IPSET_DB_DIR="/var/lib/location/ipset"
|
|
|
|
SYNPROXY_OPTIONS=(
|
|
# Allow clients to use Selective ACKs
|
|
"--sack-perm"
|
|
|
|
# Allow TCP Timestamps
|
|
#"--timestamp"
|
|
|
|
# Window Scaling
|
|
"--wscale" "9"
|
|
|
|
# Maximum Segment Size
|
|
"--mss" "1460"
|
|
)
|
|
|
|
FWBRIDGE="fwbridge"
|
|
|
|
function iptables() {
|
|
/sbin/iptables --wait "$@"
|
|
}
|
|
|
|
iptables_init() {
|
|
# Flush all rules and delete all custom chains
|
|
iptables -F
|
|
iptables -t nat -F
|
|
iptables -t mangle -F
|
|
iptables -t raw -F
|
|
iptables -X
|
|
iptables -t nat -X
|
|
iptables -t mangle -X
|
|
iptables -t raw -X
|
|
|
|
# Set up policies
|
|
iptables -P INPUT DROP
|
|
iptables -P FORWARD DROP
|
|
iptables -P OUTPUT ACCEPT
|
|
|
|
# Enable TRACE logging to syslog
|
|
modprobe nf_log_ipv4
|
|
sysctl -q -w net.netfilter.nf_log.2=nf_log_ipv4
|
|
|
|
# Empty LOG_DROP and LOG_REJECT chains
|
|
iptables -N LOG_DROP
|
|
iptables -A LOG_DROP -m limit --limit 10/second -j LOG
|
|
iptables -A LOG_DROP -j DROP
|
|
iptables -N LOG_REJECT
|
|
iptables -A LOG_REJECT -m limit --limit 10/second -j LOG
|
|
iptables -A LOG_REJECT -j REJECT
|
|
|
|
# This chain will log, then DROPs packets with certain bad combinations
|
|
# of flags might indicate a port-scan attempt (xmas, null, etc.)
|
|
iptables -N PSCAN
|
|
if [ "$DROPPORTSCAN" == "on" ]; then
|
|
iptables -A PSCAN -p tcp -m limit --limit 10/second -j LOG --log-prefix "DROP_TCP Scan " -m comment --comment "DROP_TCP PScan"
|
|
iptables -A PSCAN -p udp -m limit --limit 10/second -j LOG --log-prefix "DROP_UDP Scan " -m comment --comment "DROP_UDP PScan"
|
|
iptables -A PSCAN -p icmp -m limit --limit 10/second -j LOG --log-prefix "DROP_ICMP Scan " -m comment --comment "DROP_ICMP PScan"
|
|
iptables -A PSCAN -f -m limit --limit 10/second -j LOG --log-prefix "DROP_FRAG Scan " -m comment --comment "DROP_FRAG PScan"
|
|
fi
|
|
iptables -A PSCAN -j DROP -m comment --comment "DROP_PScan"
|
|
|
|
# New tcp packets without SYN set - could well be an obscure type of port scan
|
|
# that's not covered above, may just be a broken Windows machine
|
|
iptables -N NEWNOTSYN
|
|
if [ "$DROPNEWNOTSYN" == "on" ]; then
|
|
iptables -A NEWNOTSYN -m limit --limit 10/second -j LOG --log-prefix "DROP_NEWNOTSYN "
|
|
fi
|
|
iptables -A NEWNOTSYN -j DROP -m comment --comment "DROP_NEWNOTSYN"
|
|
|
|
# Log and subsequently drop spoofed packets or "martians", arriving from sources
|
|
# on interfaces where we don't expect them
|
|
iptables -N SPOOFED_MARTIAN
|
|
if [ "$DROPSPOOFEDMARTIAN" == "on" ]; then
|
|
iptables -A SPOOFED_MARTIAN -m limit --limit 10/second -j LOG --log-prefix "DROP_SPOOFED_MARTIAN "
|
|
fi
|
|
iptables -A SPOOFED_MARTIAN -j DROP -m comment --comment "DROP_SPOOFED_MARTIAN"
|
|
|
|
# Chain to contain all the rules relating to bad TCP flags
|
|
iptables -N BADTCP
|
|
|
|
# Don't check loopback
|
|
iptables -A BADTCP -i lo -j RETURN
|
|
|
|
# Disallow packets frequently used by port-scanners
|
|
# NMAP FIN/URG/PSH (XMAS scan)
|
|
iptables -A BADTCP -p tcp --tcp-flags ALL FIN,URG,PSH -j PSCAN
|
|
# SYN/RST/ACK/FIN/URG
|
|
iptables -A BADTCP -p tcp --tcp-flags ALL SYN,RST,ACK,FIN,URG -j PSCAN
|
|
# ALL/ALL
|
|
iptables -A BADTCP -p tcp --tcp-flags ALL ALL -j PSCAN
|
|
# FIN Stealth
|
|
iptables -A BADTCP -p tcp --tcp-flags ALL FIN -j PSCAN
|
|
# SYN/RST (also catches xmas variants that set SYN+RST+...)
|
|
iptables -A BADTCP -p tcp --tcp-flags SYN,RST SYN,RST -j PSCAN
|
|
# SYN/FIN (QueSO or nmap OS probe)
|
|
iptables -A BADTCP -p tcp --tcp-flags SYN,FIN SYN,FIN -j PSCAN
|
|
# Null
|
|
iptables -A BADTCP -p tcp --tcp-flags ALL NONE -j PSCAN
|
|
# NEW TCP without SYN
|
|
iptables -A BADTCP -p tcp ! --syn -m conntrack --ctstate NEW -j NEWNOTSYN
|
|
|
|
iptables -A INPUT -p tcp -j BADTCP
|
|
iptables -A FORWARD -p tcp -j BADTCP
|
|
|
|
# Connection tracking chains
|
|
iptables -N CTINVALID
|
|
if [ "$LOGDROPCTINVALID" == "on" ]; then
|
|
iptables -A CTINVALID -m limit --limit 10/second -j LOG --log-prefix "DROP_CTINVALID "
|
|
fi
|
|
iptables -A CTINVALID -j DROP -m comment --comment "DROP_CTINVALID"
|
|
|
|
iptables -N CTINPUT
|
|
iptables -A CTINPUT -m conntrack --ctstate ESTABLISHED -j ACCEPT
|
|
iptables -A CTINPUT -m conntrack --ctstate INVALID,UNTRACKED \
|
|
-p tcp -j SYNPROXY "${SYNPROXY_OPTIONS[@]}"
|
|
iptables -A CTINPUT -m conntrack --ctstate INVALID -j CTINVALID
|
|
iptables -A CTINPUT -p icmp -m conntrack --ctstate RELATED -j ACCEPT
|
|
|
|
iptables -N CTOUTPUT
|
|
iptables -A CTOUTPUT -m conntrack --ctstate ESTABLISHED -j ACCEPT
|
|
iptables -A CTOUTPUT -p icmp -m conntrack --ctstate RELATED -j ACCEPT
|
|
|
|
# Restore any connection marks
|
|
iptables -t mangle -A PREROUTING -m mark --mark 0 -j CONNMARK --restore-mark
|
|
|
|
# Fix for braindead ISPs
|
|
iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
|
|
|
|
# CUSTOM chains, can be used by the users themselves
|
|
iptables -N CUSTOMINPUT
|
|
iptables -A INPUT -j CUSTOMINPUT
|
|
iptables -N CUSTOMFORWARD
|
|
iptables -A FORWARD -j CUSTOMFORWARD
|
|
iptables -N CUSTOMOUTPUT
|
|
iptables -A OUTPUT -j CUSTOMOUTPUT
|
|
iptables -t nat -N CUSTOMPREROUTING
|
|
iptables -t nat -A PREROUTING -j CUSTOMPREROUTING
|
|
iptables -t nat -N CUSTOMPOSTROUTING
|
|
iptables -t nat -A POSTROUTING -j CUSTOMPOSTROUTING
|
|
|
|
# Chains for networks known as being hostile, posing a technical threat to our users
|
|
# (i. e. listed at Spamhaus DROP et al.)
|
|
iptables -N HOSTILE
|
|
iptables -A INPUT -j HOSTILE
|
|
iptables -A FORWARD -j HOSTILE
|
|
iptables -A OUTPUT -j HOSTILE
|
|
|
|
iptables -N HOSTILE_DROP_IN
|
|
if [ "$LOGDROPHOSTILEIN" == "on" ]; then
|
|
iptables -A HOSTILE_DROP_IN -m limit --limit 10/second -j LOG --log-prefix "DROP_HOSTILE "
|
|
fi
|
|
iptables -A HOSTILE_DROP_IN -j DROP -m comment --comment "DROP_HOSTILE"
|
|
|
|
iptables -N HOSTILE_DROP_OUT
|
|
if [ "$LOGDROPHOSTILEOUT" == "on" ]; then
|
|
iptables -A HOSTILE_DROP_OUT -m limit --limit 10/second -j LOG --log-prefix "DROP_HOSTILE "
|
|
fi
|
|
iptables -A HOSTILE_DROP_OUT -j DROP -m comment --comment "DROP_HOSTILE"
|
|
|
|
|
|
# IP Address Blocklist chains
|
|
iptables -N BLOCKLISTIN
|
|
iptables -N BLOCKLISTOUT
|
|
iptables -A INPUT ! -p icmp -j BLOCKLISTIN
|
|
iptables -A FORWARD ! -p icmp -j BLOCKLISTIN
|
|
iptables -A FORWARD ! -p icmp -j BLOCKLISTOUT
|
|
iptables -A OUTPUT ! -p icmp -j BLOCKLISTOUT
|
|
|
|
# IPS (Guardian) chains
|
|
iptables -N GUARDIAN
|
|
iptables -A INPUT -j GUARDIAN
|
|
iptables -A FORWARD -j GUARDIAN
|
|
|
|
# Block non-established IPsec networks
|
|
iptables -N IPSECBLOCK
|
|
iptables -A FORWARD -m policy --dir out --pol none -j IPSECBLOCK
|
|
iptables -A OUTPUT -m policy --dir out --pol none -j IPSECBLOCK
|
|
|
|
# Block unauthorized WireGuard traffic
|
|
iptables -N WGBLOCK
|
|
iptables -A INPUT -i wg+ -j WGBLOCK
|
|
iptables -A FORWARD -i wg+ -j WGBLOCK
|
|
|
|
# NAT for WireGuard peers
|
|
iptables -t nat -N WGNAT
|
|
iptables -t nat -A POSTROUTING -j WGNAT
|
|
|
|
# Block OpenVPN transfer networks
|
|
iptables -N OVPNBLOCK
|
|
iptables -A INPUT -i tun+ -j OVPNBLOCK
|
|
iptables -A FORWARD -i tun+ -j OVPNBLOCK
|
|
iptables -A FORWARD -o tun+ -j OVPNBLOCK
|
|
|
|
# OpenVPN transfer network translation
|
|
iptables -t nat -N OVPNNAT
|
|
iptables -t nat -A POSTROUTING -j OVPNNAT
|
|
|
|
# IPTV chains for IGMPPROXY
|
|
iptables -N IPTVINPUT
|
|
iptables -A INPUT -j IPTVINPUT
|
|
iptables -N IPTVFORWARD
|
|
iptables -A FORWARD -j IPTVFORWARD
|
|
|
|
# Allow to ping the firewall.
|
|
iptables -N ICMPINPUT
|
|
iptables -A INPUT -j ICMPINPUT
|
|
iptables -A ICMPINPUT -p icmp --icmp-type 8 -j ACCEPT
|
|
|
|
# Accept everything on loopback
|
|
iptables -N LOOPBACK
|
|
iptables -A LOOPBACK -i lo -j ACCEPT
|
|
iptables -A LOOPBACK -o lo -j ACCEPT
|
|
|
|
# Filter all packets with loopback addresses on non-loopback interfaces (spoofed)
|
|
iptables -A LOOPBACK -s 127.0.0.0/8 -j SPOOFED_MARTIAN
|
|
iptables -A LOOPBACK -d 127.0.0.0/8 -j SPOOFED_MARTIAN
|
|
|
|
for i in INPUT FORWARD OUTPUT; do
|
|
iptables -A ${i} -j LOOPBACK
|
|
done
|
|
|
|
# Captive portal
|
|
iptables -N CAPTIVE_PORTAL
|
|
iptables -N CAPTIVE_PORTAL_CLIENTS
|
|
for i in INPUT FORWARD; do
|
|
iptables -A ${i} -j CAPTIVE_PORTAL
|
|
done
|
|
|
|
# Accept everything connected
|
|
iptables -A INPUT -j CTINPUT
|
|
iptables -A FORWARD -j CTINPUT
|
|
iptables -A OUTPUT -j CTOUTPUT
|
|
|
|
# Allow DHCP
|
|
iptables -N DHCPINPUT
|
|
iptables -A DHCPINPUT -p udp --sport 68 --dport 67 -j ACCEPT
|
|
iptables -A DHCPINPUT -p tcp --sport 68 --dport 67 -j ACCEPT
|
|
|
|
iptables -N DHCPOUTPUT
|
|
iptables -A DHCPOUTPUT -p udp --sport 67 --dport 68 -j ACCEPT
|
|
iptables -A DHCPOUTPUT -p tcp --sport 67 --dport 68 -j ACCEPT
|
|
|
|
# Allow DHCP on GREEN
|
|
iptables -N DHCPGREENINPUT
|
|
iptables -N DHCPGREENOUTPUT
|
|
if [ -n "${GREEN_DEV}" ]; then
|
|
iptables -A INPUT -i "${GREEN_DEV}" -j DHCPGREENINPUT
|
|
iptables -A OUTPUT -o "${GREEN_DEV}" -j DHCPGREENOUTPUT
|
|
fi
|
|
|
|
# Allow DHCP on BLUE to be turned on/off
|
|
iptables -N DHCPBLUEINPUT
|
|
iptables -N DHCPBLUEOUTPUT
|
|
if [ -n "${BLUE_DEV}" ]; then
|
|
iptables -A INPUT -i "${BLUE_DEV}" -j DHCPBLUEINPUT
|
|
iptables -A OUTPUT -o "${BLUE_DEV}" -j DHCPBLUEOUTPUT
|
|
fi
|
|
|
|
# Tor (inbound)
|
|
iptables -N TOR_INPUT
|
|
iptables -A INPUT -j TOR_INPUT
|
|
|
|
# Location Block
|
|
iptables -N LOCATIONBLOCK
|
|
iptables -A INPUT -j LOCATIONBLOCK
|
|
iptables -A FORWARD -j LOCATIONBLOCK
|
|
|
|
# trafic from ipsecX/TUN/TAP interfaces, before "-i GREEN_DEV" accept everything
|
|
iptables -N IPSECINPUT
|
|
iptables -N IPSECFORWARD
|
|
iptables -N IPSECOUTPUT
|
|
iptables -A INPUT -j IPSECINPUT
|
|
iptables -A FORWARD -j IPSECFORWARD
|
|
iptables -A OUTPUT -j IPSECOUTPUT
|
|
iptables -t nat -N IPSECNAT
|
|
iptables -t nat -A POSTROUTING -j IPSECNAT
|
|
|
|
# localhost and ethernet.
|
|
# Always allow accessing the web GUI from GREEN.
|
|
iptables -N GUIINPUT
|
|
iptables -A INPUT -j GUIINPUT
|
|
if [ -n "${GREEN_DEV}" ]; then
|
|
iptables -A GUIINPUT -i "${GREEN_DEV}" -p tcp --dport 444 -j ACCEPT
|
|
fi
|
|
|
|
# WIRELESS chains
|
|
iptables -N WIRELESSINPUT
|
|
iptables -A INPUT -m conntrack --ctstate NEW -j WIRELESSINPUT
|
|
iptables -N WIRELESSFORWARD
|
|
iptables -A FORWARD -m conntrack --ctstate NEW -j WIRELESSFORWARD
|
|
|
|
# OpenVPN
|
|
iptables -N OVPNINPUT
|
|
iptables -A INPUT -j OVPNINPUT
|
|
|
|
# Tor (outbound)
|
|
iptables -N TOR_OUTPUT
|
|
iptables -A OUTPUT -j TOR_OUTPUT
|
|
|
|
# Jump into the actual firewall ruleset.
|
|
iptables -N INPUTFW
|
|
iptables -A INPUT -j INPUTFW
|
|
|
|
iptables -N OUTGOINGFW
|
|
iptables -A OUTPUT -j OUTGOINGFW
|
|
|
|
iptables -N FORWARDFW
|
|
iptables -A FORWARD -j FORWARDFW
|
|
|
|
# SNAT rules
|
|
iptables -t nat -N NAT_SOURCE
|
|
iptables -t nat -A POSTROUTING -j NAT_SOURCE
|
|
|
|
# Captive Portal
|
|
iptables -t nat -N CAPTIVE_PORTAL
|
|
iptables -t nat -A PREROUTING -j CAPTIVE_PORTAL
|
|
|
|
# Custom prerouting chains (for transparent proxy)
|
|
iptables -t nat -N SQUID
|
|
iptables -t nat -A PREROUTING -j SQUID
|
|
|
|
# DNAT rules
|
|
iptables -t nat -N NAT_DESTINATION
|
|
iptables -t nat -A PREROUTING -j NAT_DESTINATION
|
|
iptables -t nat -A OUTPUT -j NAT_DESTINATION
|
|
|
|
iptables -t mangle -N NAT_DESTINATION
|
|
iptables -t mangle -A PREROUTING -j NAT_DESTINATION
|
|
|
|
iptables -t nat -N NAT_DESTINATION_FIX
|
|
iptables -t nat -A POSTROUTING -j NAT_DESTINATION_FIX
|
|
|
|
if [ -n "${GREEN_ADDRESS}" ]; then
|
|
iptables -t nat -A NAT_DESTINATION_FIX \
|
|
-m mark --mark "0x01000000/${NAT_MASK}" -j SNAT --to-source "${GREEN_ADDRESS}"
|
|
fi
|
|
|
|
if [ -n "${BLUE_ADDRESS}" ]; then
|
|
iptables -t nat -A NAT_DESTINATION_FIX \
|
|
-m mark --mark "0x02000000/${NAT_MASK}" -j SNAT --to-source "${BLUE_ADDRESS}"
|
|
fi
|
|
|
|
if [ -n "${ORANGE_ADDRESS}" ]; then
|
|
iptables -t nat -A NAT_DESTINATION_FIX \
|
|
-m mark --mark "0x04000000/${NAT_MASK}" -j SNAT --to-source "${ORANGE_ADDRESS}"
|
|
fi
|
|
|
|
# IPS (Suricata) chains
|
|
iptables -t mangle -N IPS
|
|
iptables -t mangle -N IPS_CLEAR
|
|
iptables -t mangle -N IPS_SCAN_IN
|
|
iptables -t mangle -N IPS_SCAN_OUT
|
|
|
|
iptables -t mangle -A INPUT -j IPS_SCAN_IN
|
|
iptables -t mangle -A FORWARD -j IPS_SCAN_IN
|
|
iptables -t mangle -A FORWARD -j IPS_SCAN_OUT
|
|
iptables -t mangle -A OUTPUT -j IPS_SCAN_OUT
|
|
|
|
for chain in INPUT FORWARD OUTPUT; do
|
|
iptables -t mangle -A "${chain}" -j IPS
|
|
iptables -t mangle -A "${chain}" -j IPS_CLEAR
|
|
done
|
|
|
|
# RED chain, used for the red interface
|
|
iptables -N REDINPUT
|
|
iptables -A INPUT -j REDINPUT
|
|
iptables -N REDFORWARD
|
|
iptables -A FORWARD -j REDFORWARD
|
|
iptables -t nat -N REDNAT
|
|
iptables -t nat -A POSTROUTING -j REDNAT
|
|
|
|
# SYN Flood Protection
|
|
iptables -t raw -N SYN_FLOOD_PROTECT
|
|
iptables -t raw -A PREROUTING -p tcp --syn -j SYN_FLOOD_PROTECT
|
|
|
|
# XDP SYNPROXY acceleration
|
|
iptables -N XDP_SYNPROXY
|
|
iptables -t raw -N XDP_SYNPROXY
|
|
|
|
# Populate IPsec chains
|
|
/usr/lib/firewall/ipsec-policy
|
|
|
|
# Apply OpenVPN firewall rules
|
|
/usr/local/bin/openvpnctrl --firewall-rules
|
|
|
|
# run wirelessctrl
|
|
/usr/local/bin/wirelessctrl
|
|
|
|
# run captivectrl
|
|
/usr/local/bin/captivectrl
|
|
|
|
# If a Tor relay is enabled apply firewall rules
|
|
if [ "${TOR_RELAY_ENABLED}" = "on" -a -n "${TOR_RELAY_PORT}" ]; then
|
|
/usr/local/bin/torctrl restart 1> /dev/null
|
|
fi
|
|
|
|
# POLICY CHAIN
|
|
iptables -N POLICYIN
|
|
iptables -A INPUT -j POLICYIN
|
|
iptables -N POLICYFWD
|
|
iptables -A FORWARD -j POLICYFWD
|
|
iptables -N POLICYOUT
|
|
iptables -A OUTPUT -j POLICYOUT
|
|
|
|
# Enable bridge netfilter.
|
|
if [ "${BRIDGENETFILTER}" = "on" ]; then
|
|
modprobe br_netfilter
|
|
sysctl -w net.bridge.bridge-nf-call-iptables=1
|
|
fi
|
|
# Initialize firewall policies.
|
|
/usr/sbin/firewall-policy
|
|
|
|
# Install firewall rules for the red interface.
|
|
iptables_red_up
|
|
|
|
# If red has not been brought up yet, we will
|
|
# add the blocking rules for MASQUERADE
|
|
if [ ! -e "/var/ipfire/red/active" ]; then
|
|
iptables_red_down
|
|
fi
|
|
|
|
if [ "${FWBRIDGEMODE}" = "on" ]; then
|
|
ip link add name $FWBRIDGE type bridge
|
|
ip link set $RED_DEV master $FWBRIDGE
|
|
ip link set $GREEN_DEV master $FWBRIDGE
|
|
ip link set $FWBRIDGE up
|
|
ip a add $FWBRIDGEIP/$FWBRIDGEMASK dev $FWBRIDGE
|
|
iptables -t filter -A GUIINPUT -i $FWBRIDGE -p tcp -m tcp --dport 444 -j ACCEPT
|
|
iptables -t filter -A GUIINPUT -i $FWBRIDGE -p tcp -m tcp --dport 22 -j ACCEPT
|
|
fi
|
|
}
|
|
|
|
iptables_red_up() {
|
|
iptables -F REDINPUT
|
|
iptables -F REDFORWARD
|
|
iptables -t nat -F REDNAT
|
|
|
|
# Prohibit spoofing our own IP address on RED
|
|
if [ -f /var/ipfire/red/active ]; then
|
|
REDIP="$( cat /var/ipfire/red/local-ipaddress )";
|
|
|
|
if [ "$IFACE" != "" ]; then
|
|
iptables -A REDINPUT -s $REDIP -i $IFACE -j SPOOFED_MARTIAN
|
|
elif [ "$DEVICE" != "" ]; then
|
|
iptables -A REDINPUT -s $REDIP -i $DEVICE -j SPOOFED_MARTIAN
|
|
fi
|
|
fi
|
|
|
|
# PPTP over DHCP
|
|
if [ "$DEVICE" != "" -a "$TYPE" == "PPTP" -a "$METHOD" == "DHCP" ]; then
|
|
iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $DEVICE -j ACCEPT
|
|
iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $DEVICE -j ACCEPT
|
|
fi
|
|
|
|
if [ "$IFACE" != "" -a -f /var/ipfire/red/active ]; then
|
|
# DHCP
|
|
if [ "$RED_DEV" != "" -a "$RED_TYPE" == "DHCP" ]; then
|
|
iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
|
|
iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
|
|
fi
|
|
if [ "$METHOD" == "DHCP" -a "$PROTOCOL" == "RFC1483" ]; then
|
|
iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
|
|
iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
|
|
fi
|
|
|
|
# Outgoing masquerading (don't masqerade IPsec)
|
|
iptables -t nat -A REDNAT -m policy --pol ipsec --dir=out -o "${IFACE}" -j RETURN
|
|
|
|
if [ "${IFACE}" = "${GREEN_DEV}" ]; then
|
|
iptables -t nat -A REDNAT -i "${GREEN_DEV}" -o "${IFACE}" -j RETURN
|
|
fi
|
|
|
|
local NO_MASQ_NETWORKS
|
|
|
|
if [ "${MASQUERADE_GREEN}" = "off" ]; then
|
|
NO_MASQ_NETWORKS="${NO_MASQ_NETWORKS} ${GREEN_NETADDRESS}/${GREEN_NETMASK}"
|
|
fi
|
|
|
|
if [ "${MASQUERADE_BLUE}" = "off" ]; then
|
|
NO_MASQ_NETWORKS="${NO_MASQ_NETWORKS} ${BLUE_NETADDRESS}/${BLUE_NETMASK}"
|
|
fi
|
|
|
|
if [ "${MASQUERADE_ORANGE}" = "off" ]; then
|
|
NO_MASQ_NETWORKS="${NO_MASQ_NETWORKS} ${ORANGE_NETADDRESS}/${ORANGE_NETMASK}"
|
|
fi
|
|
|
|
local network
|
|
for network in ${NO_MASQ_NETWORKS}; do
|
|
iptables -t nat -A REDNAT -s "${network}" -o "${IFACE}" -j RETURN
|
|
done
|
|
|
|
# Masquerade everything else
|
|
iptables -t nat -A REDNAT -o $IFACE -j MASQUERADE
|
|
fi
|
|
|
|
# Reload all rules.
|
|
/usr/local/bin/firewallctrl
|
|
}
|
|
|
|
iptables_red_down() {
|
|
# Prohibit packets to reach the masquerading rule
|
|
# while the WAN interface is down - this is required to
|
|
# circumvent udp related NAT issues
|
|
# http://forum.ipfire.org/index.php?topic=11127.0
|
|
if [ -n "${IFACE}" ]; then
|
|
iptables -F REDFORWARD
|
|
iptables -A REDFORWARD -o "${IFACE}" -j DROP
|
|
fi
|
|
|
|
# Reload all rules.
|
|
/usr/local/bin/firewallctrl
|
|
}
|
|
|
|
# See how we were called.
|
|
case "$1" in
|
|
start)
|
|
boot_mesg "Setting up firewall"
|
|
iptables_init
|
|
evaluate_retval
|
|
;;
|
|
reload|up)
|
|
boot_mesg "Reloading firewall"
|
|
iptables_red_up
|
|
evaluate_retval
|
|
;;
|
|
down)
|
|
boot_mesg "Disabling firewall access to RED"
|
|
iptables_red_down
|
|
evaluate_retval
|
|
;;
|
|
restart)
|
|
$0 start
|
|
;;
|
|
*)
|
|
echo "Usage: $0 {start|reload|restart}"
|
|
exit 1
|
|
;;
|
|
esac
|
|
|
|
exit 0
|