git.squeep.com Git - firewall-squeep/blob - xenophobe.sh

   1 #!/bin/sh
   2
   3 set -e
   4
   5 . ./common.sh
   6
   7 set_name='xenophobe'
   8 chain="${set_name}"
   9
  10 if [ $# -eq 1 -a "x$1" = "xremove" ]
  11 then
  12         $IPTABLES -D INPUT -m set --match-set "${set_name}" src -j "${chain}" || echo "no rule '${set_name}' to remove"
  13         $IP6TABLES -D INPUT -m set --match-set "${set_name}6" src -j "${chain}" || echo "no rule '${set_name}6' to remove"
  14         $IPSET destroy "${set_name}" || echo "no set '${set_name}' to remove"
  15         $IPSET destroy "${set_name}6" || echo "no set '${set_name}6' to remove"
  16         exit 0
  17 fi
  18
  19 create_set "${set_name}" hash:net
  20 create_set "${set_name}6" hash:net family inet6
  21
  22 # create or re-init chains
  23 if ! $IPTABLES -L "${chain}" >/dev/null 2>&1
  24 then
  25         echo "initializing chain '${chain}'"
  26         $IPTABLES -N "${chain}" || $IPTABLES -F "${chain}"
  27         $IPTABLES -A "${chain}" -m conntrack --ctstate ESTABLISHED,RELATED -j RETURN
  28         $IPTABLES -A "${chain}" -j REJECT --reject-with icmp-port-unreachable
  29         $IPTABLES -v -L "${chain}"
  30 fi
  31
  32 if ! $IP6TABLES -L "${chain}" >/dev/null 2>&1
  33 then
  34         echo "initializing chain '${chain}' ipv6"
  35         $IP6TABLES -N "${chain}" || $IP6TABLES -F "${chain}"
  36         $IP6TABLES -A "${chain}" -m conntrack --ctstate ESTABLISHED,RELATED -j RETURN
  37         $IP6TABLES -A "${chain}" -j REJECT --reject-with icmp6-port-unreachable
  38         $IP6TABLES -v -L "${chain}"
  39 fi
  40
  41 insert_setmatch_rules "${set_name}" -j "${chain}"
  42
  43 reload_cidr_sets "${set_name}"
  44