###############################################################################
# #
# 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 #
# 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;
my $configfwdfw = "${General::swroot}/forward/config";
my $configinput = "${General::swroot}/forward/input";
my $configoutgoing = "${General::swroot}/forward/outgoing";
-my $confignat = "${General::swroot}/forward/nat";
my $p2pfile = "${General::swroot}/forward/p2protocols";
my $configgrp = "${General::swroot}/fwhosts/customgroups";
my $netsettings = "${General::swroot}/ethernet/settings";
&General::readhasharray($configfwdfw, \%configfwdfw);
&General::readhasharray($configinput, \%configinputfw);
&General::readhasharray($configoutgoing, \%configoutgoingfw);
-&General::readhasharray($confignat, \%confignatfw);
&General::readhasharray($configgrp, \%customgrp);
&General::get_aliases(\%aliases);
################################
# DEBUG/TEST #
################################
-my $MODE=1; # 0 - normal operation
+my $MODE=0; # 0 - normal operation
# 1 - print configline and rules to console
#
################################
&p2pblock;
system ("/usr/sbin/firewall-policy");
}elsif($fwdfwsettings{'POLICY'} eq 'MODE2'){
- $defaultNetworks{'GREEN_NETMASK'}=&General::iporsubtocidr($defaultNetworks{'GREEN_NETMASK'});
- $green="$defaultNetworks{'GREEN_ADDRESS'}/$defaultNetworks{'GREEN_NETMASK'}";
- if ($defaultNetworks{'BLUE_DEV'}){
- $defaultNetworks{'BLUE_NETMASK'}=&General::iporsubtocidr($defaultNetworks{'BLUE_NETMASK'});
- $blue="$defaultNetworks{'BLUE_ADDRESS'}/$defaultNetworks{'BLUE_NETMASK'}";
- #set default rules for BLUE
- system ("iptables -A $CHAIN -s $blue -d $green -j RETURN");
- }
- if ($defaultNetworks{'ORANGE_DEV'}){
- $defaultNetworks{'ORANGE_NETMASK'}=&General::iporsubtocidr($defaultNetworks{'ORANGE_NETMASK'});
- $orange="$defaultNetworks{'ORANGE_ADDRESS'}/$defaultNetworks{'ORANGE_NETMASK'}";
- #set default rules for DMZ
- system ("iptables -A $CHAIN -s $orange -d $green -j RETURN");
- if ($defaultNetworks{'BLUE_DEV'}){
- system ("iptables -A $CHAIN -s $orange -d $blue -j RETURN");
- }
- }
&p2pblock;
- system ("iptables -A $CHAIN -m state --state NEW -j ACCEPT");
+ system ("iptables -A $CHAIN -m conntrack --ctstate NEW -j ACCEPT");
system ("/usr/sbin/firewall-policy");
system ("/etc/sysconfig/firewall.local reload");
}
if (! -z "${General::swroot}/forward/outgoing"){
&buildrules(\%configoutgoingfw);
}
- if (! -z "${General::swroot}/forward/nat"){
- &buildrules(\%confignatfw);
- }
}
sub buildrules
{
my $nat;
my $fwaccessdport;
my $natchain;
+ my $icmptype;
foreach my $key (sort {$a <=> $b} keys %$hash){
next if (($$hash{$key}[6] eq 'RED' || $$hash{$key}[6] eq 'RED1') && $conexists eq 'off' );
+ $command="iptables -A";
if ($$hash{$key}[28] eq 'ON'){
$command='iptables -t nat -A';
$natip=&get_nat_ip($$hash{$key}[29],$$hash{$key}[31]);
if(substr($DPORT, 2, 4) eq 'icmp'){
my @icmprule= split(",",substr($DPORT, 12,));
foreach (@icmprule){
+ $icmptype="--icmp-type ";
+ if ($_ eq "BLANK") {
+ $icmptype="";
+ $_="";
+ }
if ($$hash{$key}[17] eq 'ON'){
- print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] --icmp-type $_ $TIME -j LOG\n";
+ print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $icmptype $_ $TIME -j LOG\n";
}
- print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] --icmp-type $_ $TIME -j $$hash{$key}[0]\n";
+ print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $icmptype $_ $TIME -j $$hash{$key}[0]\n";
}
}elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat'){
$natchain='NAT_DESTINATION';
$natchain='NAT_SOURCE';
print "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $nat --to $natip\n";
}
- if ($$hash{$key}[17] eq 'ON'){
+ if ($$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{$key}[0]\n";
+ }
}
}
}
if ($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){
+ $icmptype="--icmp-type ";
+ if ($_ eq "BLANK") {
+ $icmptype="";
+ $_="";
+ }
if ($$hash{$key}[17] eq 'ON'){
- system ("$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] -- icmp-type $_ $TIME -j LOG");
+ system ("$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $icmptype $_ $TIME -j LOG");
}
- system ("$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] --icmp-type $_ $TIME -j $$hash{$key}[0]");
+ system ("$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $icmptype $_ $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'){
}
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' && $$hash{$key}[31] eq 'snat'){
$natchain='NAT_SOURCE';
system "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $nat --to $natip\n";
}
- if ($$hash{$key}[17] eq 'ON'){
+ if ($$hash{$key}[17] eq 'ON' && substr($DPORT, 2, 4) ne 'icmp'){
system "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n";
}
- system "iptables -A $$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 $$hash{$key}[0]\n";
+ }
}
}
}
return "--dport $$hash{$key}[15] ";
}else{
$$hash{$key}[15] =~ s/\:/-/g;
- return ":$$hash{$key}[15]";
+ return ":$$hash{$key}[15]";
}
}
}elsif($$hash{$key}[13] ne '' && $$hash{$key}[13] ne 'All ICMP-Types'){
}
}elsif($$hash{$key}[14] eq 'cust_srv'){
if ($prot ne 'ICMP'){
- if($$hash{$key}[31] eq 'dnat'){
+ if($$hash{$key}[31] eq 'dnat' && $$hash{$key}[28] eq 'ON'){
return ":".&fwlib::get_srv_port($$hash{$key}[15],1,$prot);
}else{
return "--dport ".&fwlib::get_srv_port($$hash{$key}[15],1,$prot);
projects / people / teissler / ipfire-2.x.git / blobdiff