An IPv6 ESP connection between the hosts <b>moon</b> and <b>sun</b> is successfully set up.
-The authentication is based on X.509 certificates. In order to test the host-to-host tunnel
-<b>moon</b> sends an IPv6 ICMP request to <b>sun</b> using the ping6 command.
+The authentication is based on X.509 certificates. Upon the successful establishment of
+the IPsec tunnel, <b>leftfirewall=yes</b> automatically inserts ip6tables-based firewall
+rules that let pass the tunneled traffic. In order to test both the host-to-host tunnel
+and the firewall rules, <b>moon</b> sends an IPv6 ICMP request to <b>sun</b> using the ping6 command.
--- /dev/null
+#!/sbin/runscript
+# Copyright 1999-2004 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+opts="start stop reload"
+
+depend() {
+ before net
+ need logger
+}
+
+start() {
+ ebegin "Starting firewall"
+
+ # enable IP forwarding
+ echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
+ echo 1 > /proc/sys/net/ipv4/ip_forward
+
+ # default policy is DROP
+ /sbin/iptables -P INPUT DROP
+ /sbin/iptables -P OUTPUT DROP
+ /sbin/iptables -P FORWARD DROP
+
+ /sbin/ip6tables -P INPUT DROP
+ /sbin/ip6tables -P OUTPUT DROP
+ /sbin/ip6tables -P FORWARD DROP
+
+ # allow esp
+ ip6tables -A INPUT -i eth0 -p 50 -j ACCEPT
+ ip6tables -A OUTPUT -o eth0 -p 50 -j ACCEPT
+
+ # allow IKE
+ ip6tables -A INPUT -i eth0 -p udp --sport 500 --dport 500 -j ACCEPT
+ ip6tables -A OUTPUT -o eth0 -p udp --dport 500 --sport 500 -j ACCEPT
+
+ # allow MobIKE
+ ip6tables -A INPUT -i eth0 -p udp --sport 4500 --dport 4500 -j ACCEPT
+ ip6tables -A OUTPUT -o eth0 -p udp --dport 4500 --sport 4500 -j ACCEPT
+
+ # allow ICMPv6 neighbor-solicitations
+ ip6tables -A INPUT -p icmpv6 --icmpv6-type neighbor-solicitation -j ACCEPT
+ ip6tables -A OUTPUT -p icmpv6 --icmpv6-type neighbor-solicitation -j ACCEPT
+
+ # allow ICMPv6 neighbor-advertisements
+ ip6tables -A INPUT -p icmpv6 --icmpv6-type neighbor-advertisement -j ACCEPT
+ ip6tables -A OUTPUT -p icmpv6 --icmpv6-type neighbor-advertisement -j ACCEPT
+
+ # allow crl fetch from winnetou
+ iptables -A INPUT -i eth0 -p tcp --sport 80 -s PH_IP_WINNETOU -j ACCEPT
+ iptables -A OUTPUT -o eth0 -p tcp --dport 80 -d PH_IP_WINNETOU -j ACCEPT
+
+ # allow ssh
+ iptables -A INPUT -p tcp --dport 22 -j ACCEPT
+ iptables -A OUTPUT -p tcp --sport 22 -j ACCEPT
+
+ eend $?
+}
+
+stop() {
+ ebegin "Stopping firewall"
+ for a in `cat /proc/net/ip_tables_names`; do
+ /sbin/ip6tables -F -t $a
+ /sbin/ip6tables -X -t $a
+
+ /sbin/ipables -F -t $a
+ /sbin/iptables -X -t $a
+
+ if [ $a == nat ]; then
+ /sbin/iptables -t nat -P PREROUTING ACCEPT
+ /sbin/iptables -t nat -P POSTROUTING ACCEPT
+ /sbin/iptables -t nat -P OUTPUT ACCEPT
+ elif [ $a == mangle ]; then
+ /sbin/iptables -t mangle -P PREROUTING ACCEPT
+ /sbin/iptables -t mangle -P INPUT ACCEPT
+ /sbin/iptables -t mangle -P FORWARD ACCEPT
+ /sbin/iptables -t mangle -P OUTPUT ACCEPT
+ /sbin/iptables -t mangle -P POSTROUTING ACCEPT
+ elif [ $a == filter ]; then
+ /sbin/ip6tables -t filter -P INPUT ACCEPT
+ /sbin/ip6tables -t filter -P FORWARD ACCEPT
+ /sbin/ip6tables -t filter -P OUTPUT ACCEPT
+
+ /sbin/iptables -t filter -P INPUT ACCEPT
+ /sbin/iptables -t filter -P FORWARD ACCEPT
+ /sbin/iptables -t filter -P OUTPUT ACCEPT
+ fi
+ done
+ eend $?
+}
+
+reload() {
+ ebegin "Flushing firewall"
+ for a in `cat /proc/net/ip_tables_names`; do
+ /sbin/ip6tables -F -t $a
+ /sbin/ip6tables -X -t $a
+ done;
+ eend $?
+ start
+}
+
rightnexthop=0::0
rightid=@sun.strongswan.org
auto=add
-
--- /dev/null
+#!/sbin/runscript
+# Copyright 1999-2004 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+opts="start stop reload"
+
+depend() {
+ before net
+ need logger
+}
+
+start() {
+ ebegin "Starting firewall"
+
+ # enable IP forwarding
+ echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
+ echo 1 > /proc/sys/net/ipv4/ip_forward
+
+ # default policy is DROP
+ /sbin/iptables -P INPUT DROP
+ /sbin/iptables -P OUTPUT DROP
+ /sbin/iptables -P FORWARD DROP
+
+ /sbin/ip6tables -P INPUT DROP
+ /sbin/ip6tables -P OUTPUT DROP
+ /sbin/ip6tables -P FORWARD DROP
+
+ # allow esp
+ ip6tables -A INPUT -i eth0 -p 50 -j ACCEPT
+ ip6tables -A OUTPUT -o eth0 -p 50 -j ACCEPT
+
+ # allow IKE
+ ip6tables -A INPUT -i eth0 -p udp --sport 500 --dport 500 -j ACCEPT
+ ip6tables -A OUTPUT -o eth0 -p udp --dport 500 --sport 500 -j ACCEPT
+
+ # allow MobIKE
+ ip6tables -A INPUT -i eth0 -p udp --sport 4500 --dport 4500 -j ACCEPT
+ ip6tables -A OUTPUT -o eth0 -p udp --dport 4500 --sport 4500 -j ACCEPT
+
+ # allow ICMPv6 neighbor-solicitations
+ ip6tables -A INPUT -p icmpv6 --icmpv6-type neighbor-solicitation -j ACCEPT
+ ip6tables -A OUTPUT -p icmpv6 --icmpv6-type neighbor-solicitation -j ACCEPT
+
+ # allow ICMPv6 neighbor-advertisements
+ ip6tables -A INPUT -p icmpv6 --icmpv6-type neighbor-advertisement -j ACCEPT
+ ip6tables -A OUTPUT -p icmpv6 --icmpv6-type neighbor-advertisement -j ACCEPT
+
+ # allow crl fetch from winnetou
+ iptables -A INPUT -i eth0 -p tcp --sport 80 -s PH_IP_WINNETOU -j ACCEPT
+ iptables -A OUTPUT -o eth0 -p tcp --dport 80 -d PH_IP_WINNETOU -j ACCEPT
+
+ # allow ssh
+ iptables -A INPUT -p tcp --dport 22 -j ACCEPT
+ iptables -A OUTPUT -p tcp --sport 22 -j ACCEPT
+
+ eend $?
+}
+
+stop() {
+ ebegin "Stopping firewall"
+ for a in `cat /proc/net/ip_tables_names`; do
+ /sbin/ip6tables -F -t $a
+ /sbin/ip6tables -X -t $a
+
+ /sbin/ipables -F -t $a
+ /sbin/iptables -X -t $a
+
+ if [ $a == nat ]; then
+ /sbin/iptables -t nat -P PREROUTING ACCEPT
+ /sbin/iptables -t nat -P POSTROUTING ACCEPT
+ /sbin/iptables -t nat -P OUTPUT ACCEPT
+ elif [ $a == mangle ]; then
+ /sbin/iptables -t mangle -P PREROUTING ACCEPT
+ /sbin/iptables -t mangle -P INPUT ACCEPT
+ /sbin/iptables -t mangle -P FORWARD ACCEPT
+ /sbin/iptables -t mangle -P OUTPUT ACCEPT
+ /sbin/iptables -t mangle -P POSTROUTING ACCEPT
+ elif [ $a == filter ]; then
+ /sbin/ip6tables -t filter -P INPUT ACCEPT
+ /sbin/ip6tables -t filter -P FORWARD ACCEPT
+ /sbin/ip6tables -t filter -P OUTPUT ACCEPT
+
+ /sbin/iptables -t filter -P INPUT ACCEPT
+ /sbin/iptables -t filter -P FORWARD ACCEPT
+ /sbin/iptables -t filter -P OUTPUT ACCEPT
+ fi
+ done
+ eend $?
+}
+
+reload() {
+ ebegin "Flushing firewall"
+ for a in `cat /proc/net/ip_tables_names`; do
+ /sbin/ip6tables -F -t $a
+ /sbin/ip6tables -X -t $a
+ done;
+ eend $?
+ start
+}
+
moon::ipsec stop
sun::ipsec stop
+moon::/etc/init.d/iptables stop 2> /dev/null
+sun::/etc/init.d/iptables stop 2> /dev/null
+moon::/etc/init.d/iptables start 2> /dev/null
+sun::/etc/init.d/iptables start 2> /dev/null
moon::ipsec start
sun::ipsec start
moon::sleep 2
An IPv6 ESP tunnel connection between the gateways <b>moon</b> and <b>sun</b> is successfully set up.
It connects the two subnets hiding behind their respective gateways. The authentication is based on
-X.509 certificates. In order to test the net-to-net tunnel client <b>alice</b> behind <b>moon</b>
+X.509 certificates. Upon the successful establishment of the IPsec tunnel, <b>leftfirewall=yes</b>
+automatically inserts ip6tables-based firewall rules that let pass the tunneled traffic.
+In order to test both the net-to-net tunnel and the firewall rules, client <b>alice</b> behind <b>moon</b>
sends an IPv6 ICMP request to client <b>bob</b> behind <b>sun</b> using the ping6 command.
--- /dev/null
+#!/sbin/runscript
+# Copyright 1999-2004 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+opts="start stop reload"
+
+depend() {
+ before net
+ need logger
+}
+
+start() {
+ ebegin "Starting firewall"
+
+ # enable IP forwarding
+ echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
+ echo 1 > /proc/sys/net/ipv4/ip_forward
+
+ # default policy is DROP
+ /sbin/iptables -P INPUT DROP
+ /sbin/iptables -P OUTPUT DROP
+ /sbin/iptables -P FORWARD DROP
+
+ /sbin/ip6tables -P INPUT DROP
+ /sbin/ip6tables -P OUTPUT DROP
+ /sbin/ip6tables -P FORWARD DROP
+
+ # allow esp
+ ip6tables -A INPUT -i eth0 -p 50 -j ACCEPT
+ ip6tables -A OUTPUT -o eth0 -p 50 -j ACCEPT
+
+ # allow IKE
+ ip6tables -A INPUT -i eth0 -p udp --sport 500 --dport 500 -j ACCEPT
+ ip6tables -A OUTPUT -o eth0 -p udp --dport 500 --sport 500 -j ACCEPT
+
+ # allow MobIKE
+ ip6tables -A INPUT -i eth0 -p udp --sport 4500 --dport 4500 -j ACCEPT
+ ip6tables -A OUTPUT -o eth0 -p udp --dport 4500 --sport 4500 -j ACCEPT
+
+ # allow ICMPv6 neighbor-solicitations
+ ip6tables -A INPUT -p icmpv6 --icmpv6-type neighbor-solicitation -j ACCEPT
+ ip6tables -A OUTPUT -p icmpv6 --icmpv6-type neighbor-solicitation -j ACCEPT
+
+ # allow ICMPv6 neighbor-advertisements
+ ip6tables -A INPUT -p icmpv6 --icmpv6-type neighbor-advertisement -j ACCEPT
+ ip6tables -A OUTPUT -p icmpv6 --icmpv6-type neighbor-advertisement -j ACCEPT
+
+ # allow crl fetch from winnetou
+ iptables -A INPUT -i eth0 -p tcp --sport 80 -s PH_IP_WINNETOU -j ACCEPT
+ iptables -A OUTPUT -o eth0 -p tcp --dport 80 -d PH_IP_WINNETOU -j ACCEPT
+
+ # allow ssh
+ iptables -A INPUT -p tcp --dport 22 -j ACCEPT
+ iptables -A OUTPUT -p tcp --sport 22 -j ACCEPT
+
+ eend $?
+}
+
+stop() {
+ ebegin "Stopping firewall"
+ for a in `cat /proc/net/ip_tables_names`; do
+ /sbin/ip6tables -F -t $a
+ /sbin/ip6tables -X -t $a
+
+ /sbin/ipables -F -t $a
+ /sbin/iptables -X -t $a
+
+ if [ $a == nat ]; then
+ /sbin/iptables -t nat -P PREROUTING ACCEPT
+ /sbin/iptables -t nat -P POSTROUTING ACCEPT
+ /sbin/iptables -t nat -P OUTPUT ACCEPT
+ elif [ $a == mangle ]; then
+ /sbin/iptables -t mangle -P PREROUTING ACCEPT
+ /sbin/iptables -t mangle -P INPUT ACCEPT
+ /sbin/iptables -t mangle -P FORWARD ACCEPT
+ /sbin/iptables -t mangle -P OUTPUT ACCEPT
+ /sbin/iptables -t mangle -P POSTROUTING ACCEPT
+ elif [ $a == filter ]; then
+ /sbin/ip6tables -t filter -P INPUT ACCEPT
+ /sbin/ip6tables -t filter -P FORWARD ACCEPT
+ /sbin/ip6tables -t filter -P OUTPUT ACCEPT
+
+ /sbin/iptables -t filter -P INPUT ACCEPT
+ /sbin/iptables -t filter -P FORWARD ACCEPT
+ /sbin/iptables -t filter -P OUTPUT ACCEPT
+ fi
+ done
+ eend $?
+}
+
+reload() {
+ ebegin "Flushing firewall"
+ for a in `cat /proc/net/ip_tables_names`; do
+ /sbin/ip6tables -F -t $a
+ /sbin/ip6tables -X -t $a
+ done;
+ eend $?
+ start
+}
+
--- /dev/null
+#!/sbin/runscript
+# Copyright 1999-2004 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+opts="start stop reload"
+
+depend() {
+ before net
+ need logger
+}
+
+start() {
+ ebegin "Starting firewall"
+
+ # enable IP forwarding
+ echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
+ echo 1 > /proc/sys/net/ipv4/ip_forward
+
+ # default policy is DROP
+ /sbin/iptables -P INPUT DROP
+ /sbin/iptables -P OUTPUT DROP
+ /sbin/iptables -P FORWARD DROP
+
+ /sbin/ip6tables -P INPUT DROP
+ /sbin/ip6tables -P OUTPUT DROP
+ /sbin/ip6tables -P FORWARD DROP
+
+ # allow esp
+ ip6tables -A INPUT -i eth0 -p 50 -j ACCEPT
+ ip6tables -A OUTPUT -o eth0 -p 50 -j ACCEPT
+
+ # allow IKE
+ ip6tables -A INPUT -i eth0 -p udp --sport 500 --dport 500 -j ACCEPT
+ ip6tables -A OUTPUT -o eth0 -p udp --dport 500 --sport 500 -j ACCEPT
+
+ # allow MobIKE
+ ip6tables -A INPUT -i eth0 -p udp --sport 4500 --dport 4500 -j ACCEPT
+ ip6tables -A OUTPUT -o eth0 -p udp --dport 4500 --sport 4500 -j ACCEPT
+
+ # allow ICMPv6 neighbor-solicitations
+ ip6tables -A INPUT -p icmpv6 --icmpv6-type neighbor-solicitation -j ACCEPT
+ ip6tables -A OUTPUT -p icmpv6 --icmpv6-type neighbor-solicitation -j ACCEPT
+
+ # allow ICMPv6 neighbor-advertisements
+ ip6tables -A INPUT -p icmpv6 --icmpv6-type neighbor-advertisement -j ACCEPT
+ ip6tables -A OUTPUT -p icmpv6 --icmpv6-type neighbor-advertisement -j ACCEPT
+
+ # allow crl fetch from winnetou
+ iptables -A INPUT -i eth0 -p tcp --sport 80 -s PH_IP_WINNETOU -j ACCEPT
+ iptables -A OUTPUT -o eth0 -p tcp --dport 80 -d PH_IP_WINNETOU -j ACCEPT
+
+ # allow ssh
+ iptables -A INPUT -p tcp --dport 22 -j ACCEPT
+ iptables -A OUTPUT -p tcp --sport 22 -j ACCEPT
+
+ eend $?
+}
+
+stop() {
+ ebegin "Stopping firewall"
+ for a in `cat /proc/net/ip_tables_names`; do
+ /sbin/ip6tables -F -t $a
+ /sbin/ip6tables -X -t $a
+
+ /sbin/ipables -F -t $a
+ /sbin/iptables -X -t $a
+
+ if [ $a == nat ]; then
+ /sbin/iptables -t nat -P PREROUTING ACCEPT
+ /sbin/iptables -t nat -P POSTROUTING ACCEPT
+ /sbin/iptables -t nat -P OUTPUT ACCEPT
+ elif [ $a == mangle ]; then
+ /sbin/iptables -t mangle -P PREROUTING ACCEPT
+ /sbin/iptables -t mangle -P INPUT ACCEPT
+ /sbin/iptables -t mangle -P FORWARD ACCEPT
+ /sbin/iptables -t mangle -P OUTPUT ACCEPT
+ /sbin/iptables -t mangle -P POSTROUTING ACCEPT
+ elif [ $a == filter ]; then
+ /sbin/ip6tables -t filter -P INPUT ACCEPT
+ /sbin/ip6tables -t filter -P FORWARD ACCEPT
+ /sbin/ip6tables -t filter -P OUTPUT ACCEPT
+
+ /sbin/iptables -t filter -P INPUT ACCEPT
+ /sbin/iptables -t filter -P FORWARD ACCEPT
+ /sbin/iptables -t filter -P OUTPUT ACCEPT
+ fi
+ done
+ eend $?
+}
+
+reload() {
+ ebegin "Flushing firewall"
+ for a in `cat /proc/net/ip_tables_names`; do
+ /sbin/ip6tables -F -t $a
+ /sbin/ip6tables -X -t $a
+ done;
+ eend $?
+ start
+}
+
moon::"ip route del fec2:\:/16 via fec0:\:2"
sun::"ip route del fec1:\:/16 via fec0:\:1"
bob::"ip route del fec1:\:/16 via fec2:\:1"
+moon::/etc/init.d/iptables stop 2> /dev/null
+sun::/etc/init.d/iptables stop 2> /dev/null
-moon::echo "1" >/proc/sys/net/ipv6/conf/all/forwarding
-sun::echo "1" >/proc/sys/net/ipv6/conf/all/forwarding
+moon::/etc/init.d/iptables start 2> /dev/null
+sun::/etc/init.d/iptables start 2> /dev/null
alice::"ip route add fec2:\:/16 via fec1:\:1"
moon::"ip route add fec2:\:/16 via fec0:\:2"
sun::"ip route add fec1:\:/16 via fec0:\:1"