testing/hosts/dave/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         # default policy is DROP
  16         /sbin/iptables -P INPUT DROP
  17         /sbin/iptables -P OUTPUT DROP
  18         /sbin/iptables -P FORWARD DROP
  19
  20         # allow esp
  21         iptables -A INPUT  -i eth0 -p 50 -j ACCEPT
  22         iptables -A OUTPUT -o eth0 -p 50 -j ACCEPT
  23
  24         # allow IKE
  25         iptables -A INPUT  -i eth0 -p udp --sport 500 --dport 500 -j ACCEPT
  26         iptables -A OUTPUT -o eth0 -p udp --dport 500 --sport 500 -j ACCEPT
  27
  28         # allow crl fetch from winnetou
  29         iptables -A INPUT  -i eth0 -p tcp --sport 80 -s PH_IP_WINNETOU -j ACCEPT
  30         iptables -A OUTPUT -o eth0 -p tcp --dport 80 -d PH_IP_WINNETOU -j ACCEPT
  31
  32         # allow ssh
  33         iptables -A INPUT  -p tcp --dport 22 -j ACCEPT
  34         iptables -A OUTPUT -p tcp --sport 22 -j ACCEPT
  35
  36         eend $?
  37 }
  38
  39 stop() {
  40         ebegin "Stopping firewall"
  41                 for a in `cat /proc/net/ip_tables_names`; do
  42                         /sbin/iptables -F -t $a
  43                         /sbin/iptables -X -t $a
  44
  45                         if [ $a == nat ]; then
  46                                 /sbin/iptables -t nat -P PREROUTING ACCEPT
  47                                 /sbin/iptables -t nat -P POSTROUTING ACCEPT
  48                                 /sbin/iptables -t nat -P OUTPUT ACCEPT
  49                         elif [ $a == mangle ]; then
  50                                 /sbin/iptables -t mangle -P PREROUTING ACCEPT
  51                                 /sbin/iptables -t mangle -P INPUT ACCEPT
  52                                 /sbin/iptables -t mangle -P FORWARD ACCEPT
  53                                 /sbin/iptables -t mangle -P OUTPUT ACCEPT
  54                                 /sbin/iptables -t mangle -P POSTROUTING ACCEPT
  55                         elif [ $a == filter ]; then
  56                                 /sbin/iptables -t filter -P INPUT ACCEPT
  57                                 /sbin/iptables -t filter -P FORWARD ACCEPT
  58                                 /sbin/iptables -t filter -P OUTPUT ACCEPT
  59                         fi
  60                 done
  61         eend $?
  62 }
  63
  64 reload() {
  65         ebegin "Flushing firewall"
  66                 for a in `cat /proc/net/ip_tables_names`; do
  67                         /sbin/iptables -F -t $a
  68                         /sbin/iptables -X -t $a
  69                 done;
  70         eend $?
  71         start
  72 }
  73