testing/hosts/sun/etc/init.d/iptables

   1 #!/sbin/runscript
   2 # Copyright 1999-2004 Gentoo Foundation
   3 # Distributed under the terms of the GNU General Public License v2
   4
   5 opts="start stop reload"
   6
   7 depend() {
   8         before net
   9         need logger
  10 }
  11
  12 start() {
  13         ebegin "Starting firewall"
  14
  15         # enable IP forwarding
  16         echo 1 > /proc/sys/net/ipv4/ip_forward
  17
  18         # default policy is DROP
  19         /sbin/iptables -P INPUT DROP
  20         /sbin/iptables -P OUTPUT DROP
  21         /sbin/iptables -P FORWARD DROP
  22
  23         # allow esp
  24         iptables -A INPUT  -i eth0 -p 50 -j ACCEPT
  25         iptables -A OUTPUT -o eth0 -p 50 -j ACCEPT
  26
  27         # allow IKE
  28         iptables -A INPUT  -i eth0 -p udp --dport 500 -j ACCEPT
  29         iptables -A OUTPUT -o eth0 -p udp --sport 500 -j ACCEPT
  30
  31         # allow NAT-T
  32         iptables -A INPUT  -i eth0 -p udp --dport 4500 -j ACCEPT
  33         iptables -A OUTPUT -o eth0 -p udp --sport 4500 -j ACCEPT
  34
  35         # allow crl fetch from winnetou
  36         iptables -A INPUT  -i eth0 -p tcp --sport 80 -s PH_IP_WINNETOU -j ACCEPT
  37         iptables -A OUTPUT -o eth0 -p tcp --dport 80 -d PH_IP_WINNETOU -j ACCEPT
  38
  39         # allow ssh
  40         iptables -A INPUT  -p tcp --dport 22 -j ACCEPT
  41         iptables -A OUTPUT -p tcp --sport 22 -j ACCEPT
  42
  43         eend $?
  44 }
  45
  46 stop() {
  47         ebegin "Stopping firewall"
  48                 for a in `cat /proc/net/ip_tables_names`; do
  49                         /sbin/iptables -F -t $a
  50                         /sbin/iptables -X -t $a
  51
  52                         if [ $a == nat ]; then
  53                                 /sbin/iptables -t nat -P PREROUTING ACCEPT
  54                                 /sbin/iptables -t nat -P POSTROUTING ACCEPT
  55                                 /sbin/iptables -t nat -P OUTPUT ACCEPT
  56                         elif [ $a == mangle ]; then
  57                                 /sbin/iptables -t mangle -P PREROUTING ACCEPT
  58                                 /sbin/iptables -t mangle -P INPUT ACCEPT
  59                                 /sbin/iptables -t mangle -P FORWARD ACCEPT
  60                                 /sbin/iptables -t mangle -P OUTPUT ACCEPT
  61                                 /sbin/iptables -t mangle -P POSTROUTING ACCEPT
  62                         elif [ $a == filter ]; then
  63                                 /sbin/iptables -t filter -P INPUT ACCEPT
  64                                 /sbin/iptables -t filter -P FORWARD ACCEPT
  65                                 /sbin/iptables -t filter -P OUTPUT ACCEPT
  66                         fi
  67                 done
  68         eend $?
  69 }
  70
  71 reload() {
  72         ebegin "Flushing firewall"
  73                 for a in `cat /proc/net/ip_tables_names`; do
  74                         /sbin/iptables -F -t $a
  75                         /sbin/iptables -X -t $a
  76                 done;
  77         eend $?
  78         start
  79 }
  80