Forward Firewall: edited GPL-header

[people/teissler/ipfire-2.x.git] / config / forwardfw / rules.pl

diff --git a/config/forwardfw/rules.pl b/config/forwardfw/rules.pl
index 9f23c54e0a5b0fc47472919b9d2d34726f5fdbea..370b7ecfb17d938848739a3fbc489c469741a03c 100755 (executable)
--- a/config/forwardfw/rules.pl
+++ b/config/forwardfw/rules.pl
@@ -2,7 +2,7 @@
 ###############################################################################
 #                                                                             #
 # IPFire.org - A linux based firewall                                         #
-# Copyright (C) 2012                                                                                                             #
+# Copyright (C) 2013 Alexander Marx <amarx@ipfire.org>                        #
 #                                                                             #
 # This program is free software: you can redistribute it and/or modify        #
 # it under the terms of the GNU General Public License as published by        #
@@ -18,11 +18,6 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
 #                                                                             #
 ###############################################################################
-#                                                                                                                                                        #
-# Hi folks! I hope this code is useful for all. I needed something to handle  #
-# my VPN Connections in a comfortable way.                                                               #
-# This script builds firewallrules from the webinterface                      #
-###############################################################################
 
 use strict;
 use Time::Local;
@@ -89,7 +84,7 @@ close(CONN1);
 ################################
 #    DEBUG/TEST                #
 ################################
-my $MODE=1;     # 0 - normal operation
+my $MODE=0;     # 0 - normal operation
                                # 1 - print configline and rules to console     
                                # 
 ################################               
@@ -297,7 +292,9 @@ sub buildrules
                                                                        if ($$hash{$key}[17] eq 'ON'){
                                                                                        print "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n";
                                                                        }
-                                                                       print "iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
+                                                                       if ($PROT ne '-p ICMP'){
+                                                                               print "iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
+                                                                       }
                                                                }                               
                                                        }
                                                }
@@ -314,6 +311,7 @@ sub buildrules
                                                        if ($sourcehash{$a}[0] ne $targethash{$b}[0] && $targethash{$b}[0] ne 'none' || $sourcehash{$a}[0] eq '0.0.0.0/0.0.0.0'){
                                                                if($SPROT eq '' || $SPROT eq $DPROT || $DPROT eq ' '){
                                                                        if(substr($sourcehash{$a}[0], 3, 3) ne 'mac' && $sourcehash{$a}[0] ne ''){ $STAG="-s";}
+                                                                       #Process ICMP RULE
                                                                        if(substr($DPORT, 2, 4) eq 'icmp'){
                                                                                my @icmprule= split(",",substr($DPORT, 12,));
                                                                                foreach (@icmprule){
@@ -322,6 +320,7 @@ sub buildrules
                                                                                        }
                                                                                        system ("$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] --icmp-type $_ $TIME -j $$hash{$key}[0]");
                                                                                }
+                                                                       #PROCESS DNAT RULE (Portforward)
                                                                        }elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat'){
                                                                                $natchain='NAT_DESTINATION';
                                                                                if ($$hash{$key}[17] eq 'ON'){
@@ -342,6 +341,7 @@ sub buildrules
                                                                                }
                                                                                system "iptables -A FORWARDFW $PROT -i $con $STAG $sourcehash{$a}[0] -d $ip $fwaccessdport $TIME -j $$hash{$key}[0]\n";
                                                                                next;
+                                                                       #PROCESS SNAT RULE
                                                                        }elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'snat'){
                                                                                $natchain='NAT_SOURCE';
                                                                                system "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $nat --to $natip\n";
@@ -349,7 +349,10 @@ sub buildrules
                                                                        if ($$hash{$key}[17] eq 'ON'){
                                                                                system "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n";
                                                                        }
-                                                                       system "iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
+                                                                       #PROCESS EVERY OTHER RULE (If NOT ICMP, else the rule would be applied double)
+                                                                       if ($PROT ne '-p ICMP'){
+                                                                               system "iptables -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
+                                                                       }
                                                                }                               
                                                        }
                                                }