105 lines
2.9 KiB
Plaintext
Executable File
105 lines
2.9 KiB
Plaintext
Executable File
#!/sbin/runscript
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# Copyright 1999-2004 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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opts="start stop reload"
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depend() {
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before net
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need logger
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}
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start() {
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ebegin "Starting firewall"
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# enable IP forwarding
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echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
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echo 1 > /proc/sys/net/ipv4/ip_forward
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# default policy is DROP
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/sbin/iptables -P INPUT DROP
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/sbin/iptables -P OUTPUT DROP
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/sbin/iptables -P FORWARD DROP
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/sbin/ip6tables -P INPUT DROP
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/sbin/ip6tables -P OUTPUT DROP
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/sbin/ip6tables -P FORWARD DROP
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# allow esp
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ip6tables -A INPUT -i eth0 -p 50 -j ACCEPT
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ip6tables -A OUTPUT -o eth0 -p 50 -j ACCEPT
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# allow IKE
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ip6tables -A INPUT -i eth0 -p udp --sport 500 --dport 500 -j ACCEPT
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ip6tables -A OUTPUT -o eth0 -p udp --dport 500 --sport 500 -j ACCEPT
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# allow MobIKE
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ip6tables -A INPUT -i eth0 -p udp --sport 4500 --dport 4500 -j ACCEPT
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ip6tables -A OUTPUT -o eth0 -p udp --dport 4500 --sport 4500 -j ACCEPT
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# allow ICMPv6 neighbor-solicitations
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ip6tables -A INPUT -p icmpv6 --icmpv6-type neighbor-solicitation -j ACCEPT
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ip6tables -A OUTPUT -p icmpv6 --icmpv6-type neighbor-solicitation -j ACCEPT
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# allow ICMPv6 neighbor-advertisements
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ip6tables -A INPUT -p icmpv6 --icmpv6-type neighbor-advertisement -j ACCEPT
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ip6tables -A OUTPUT -p icmpv6 --icmpv6-type neighbor-advertisement -j ACCEPT
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# allow crl and certificate fetch from winnetou
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ip6tables -A INPUT -i eth0 -p tcp --sport 80 -s PH_IP6_WINNETOU -j ACCEPT
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ip6tables -A OUTPUT -o eth0 -p tcp --dport 80 -d PH_IP6_WINNETOU -j ACCEPT
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# allow ssh
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iptables -A INPUT -p tcp --dport 22 -j ACCEPT
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iptables -A OUTPUT -p tcp --sport 22 -j ACCEPT
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# log dropped packets
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ip6tables -A INPUT -j LOG --log-prefix " IN: "
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ip6tables -A OUTPUT -j LOG --log-prefix " OUT: "
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eend $?
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}
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stop() {
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ebegin "Stopping firewall"
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for a in `cat /proc/net/ip_tables_names`; do
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/sbin/ip6tables -F -t $a
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/sbin/ip6tables -X -t $a
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/sbin/iptables -F -t $a
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/sbin/iptables -X -t $a
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if [ $a == nat ]; then
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/sbin/iptables -t nat -P PREROUTING ACCEPT
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/sbin/iptables -t nat -P POSTROUTING ACCEPT
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/sbin/iptables -t nat -P OUTPUT ACCEPT
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elif [ $a == mangle ]; then
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/sbin/iptables -t mangle -P PREROUTING ACCEPT
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/sbin/iptables -t mangle -P INPUT ACCEPT
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/sbin/iptables -t mangle -P FORWARD ACCEPT
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/sbin/iptables -t mangle -P OUTPUT ACCEPT
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/sbin/iptables -t mangle -P POSTROUTING ACCEPT
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elif [ $a == filter ]; then
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/sbin/ip6tables -t filter -P INPUT ACCEPT
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/sbin/ip6tables -t filter -P FORWARD ACCEPT
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/sbin/ip6tables -t filter -P OUTPUT ACCEPT
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/sbin/iptables -t filter -P INPUT ACCEPT
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/sbin/iptables -t filter -P FORWARD ACCEPT
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/sbin/iptables -t filter -P OUTPUT ACCEPT
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fi
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done
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eend $?
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}
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reload() {
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ebegin "Flushing firewall"
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for a in `cat /proc/net/ip_tables_names`; do
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/sbin/ip6tables -F -t $a
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/sbin/ip6tables -X -t $a
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done;
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eend $?
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start
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}
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