]>
git.ipfire.org Git - people/teissler/ipfire-2.x.git/blob - config/forwardfw/rules.pl
2 ###############################################################################
4 # IPFire.org - A linux based firewall #
7 # This program is free software: you can redistribute it and/or modify #
8 # it under the terms of the GNU General Public License as published by #
9 # the Free Software Foundation, either version 3 of the License, or #
10 # (at your option) any later version. #
12 # This program is distributed in the hope that it will be useful, #
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of #
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
15 # GNU General Public License for more details. #
17 # You should have received a copy of the GNU General Public License #
18 # along with this program. If not, see <http://www.gnu.org/licenses/>. #
20 ###############################################################################
22 # Hi folks! I hope this code is useful for all. I needed something to handle #
23 # my VPN Connections in a comfortable way. #
24 # This script builds firewallrules from the webinterface #
25 ###############################################################################
29 no warnings
'uninitialized';
31 # enable only the following on debugging purpose
33 #use CGI::Carp 'fatalsToBrowser';
36 my %defaultNetworks=();
46 my %configoutgoingfw=();
52 require '/var/ipfire/general-functions.pl';
53 require "${General::swroot}/lang.pl";
54 require "${General::swroot}/forward/bin/firewall-lib.pl";
56 my $configdmz = "${General::swroot}/forward/dmz";
57 my $configfwdfw = "${General::swroot}/forward/config";
58 my $configinput = "${General::swroot}/forward/input";
59 my $configoutgoing = "${General::swroot}/forward/outgoing";
60 my $confignat = "${General::swroot}/forward/nat";
61 my $p2pfile = "${General::swroot}/forward/p2protocols";
62 my $configgrp = "${General::swroot}/fwhosts/customgroups";
63 my $netsettings = "${General::swroot}/ethernet/settings";
68 my ($TYPE,$PROT,$SPROT,$DPROT,$SPORT,$DPORT,$TIME,$TIMEFROM,$TIMETILL,$SRC_TGT);
69 my $CHAIN="FORWARDFW";
71 my $command = 'iptables -A';
74 &General
::readhash
("${General::swroot}/forward/settings", \
%fwdfwsettings);
75 &General
::readhash
("$netsettings", \
%defaultNetworks);
76 &General
::readhasharray
($configdmz, \
%configdmzfw);
77 &General
::readhasharray
($configfwdfw, \
%configfwdfw);
78 &General
::readhasharray
($configinput, \
%configinputfw);
79 &General
::readhasharray
($configoutgoing, \
%configoutgoingfw);
80 &General
::readhasharray
($confignat, \
%confignatfw);
81 &General
::readhasharray
($configgrp, \
%customgrp);
82 &General
::get_aliases
(\
%aliases);
84 #check if we have an internetconnection
85 open (CONN
,"/var/ipfire/red/iface");
88 if (-f
"/var/ipfire/red/active"){
91 open (CONN1
,"/var/ipfire/red/local-ipaddress");
94 ################################
96 ################################
97 my $MODE=1; # 0 - normal operation
98 # 1 - print configline and rules to console
100 ################################
103 if($param eq 'flush'){
105 print " Flushing chains...\n";
110 print " Flushing chains...\n";
114 print " Preparing rules...\n";
118 if ($fwdfwsettings{'POLICY'} eq 'MODE1'){
120 system ("/usr/sbin/firewall-policy");
121 }elsif($fwdfwsettings{'POLICY'} eq 'MODE2'){
122 $defaultNetworks{'GREEN_NETMASK'}=&General
::iporsubtocidr
($defaultNetworks{'GREEN_NETMASK'});
123 $green="$defaultNetworks{'GREEN_ADDRESS'}/$defaultNetworks{'GREEN_NETMASK'}";
124 if ($defaultNetworks{'BLUE_DEV'}){
125 $defaultNetworks{'BLUE_NETMASK'}=&General
::iporsubtocidr
($defaultNetworks{'BLUE_NETMASK'});
126 $blue="$defaultNetworks{'BLUE_ADDRESS'}/$defaultNetworks{'BLUE_NETMASK'}";
127 #set default rules for BLUE
128 system ("iptables -A $CHAIN -s $blue -d $green -j RETURN");
130 if ($defaultNetworks{'ORANGE_DEV'}){
131 $defaultNetworks{'ORANGE_NETMASK'}=&General
::iporsubtocidr
($defaultNetworks{'ORANGE_NETMASK'});
132 $orange="$defaultNetworks{'ORANGE_ADDRESS'}/$defaultNetworks{'ORANGE_NETMASK'}";
133 #set default rules for DMZ
134 system ("iptables -A $CHAIN -s $orange -d $green -j RETURN");
135 if ($defaultNetworks{'BLUE_DEV'}){
136 system ("iptables -A $CHAIN -s $orange -d $blue -j RETURN");
140 system ("iptables -A $CHAIN -m state --state NEW -j ACCEPT");
141 system ("/usr/sbin/firewall-policy");
147 system ("iptables -F FORWARDFW");
148 system ("iptables -F INPUTFW");
149 system ("iptables -F OUTGOINGFW");
153 if (! -z
"${General::swroot}/forward/dmz"){
154 &buildrules
(\
%configdmzfw);
156 if (! -z
"${General::swroot}/forward/config"){
157 &buildrules
(\
%configfwdfw);
159 if (! -z
"${General::swroot}/forward/input"){
160 &buildrules
(\
%configinputfw);
162 if (! -z
"${General::swroot}/forward/outgoing"){
163 &buildrules
(\
%configoutgoingfw);
165 if (! -z
"${General::swroot}/forward/nat"){
166 &buildrules
(\
%confignatfw);
176 foreach my $key (sort {$a <=> $b} keys %$hash){
177 next if ($$hash{$key}[6] eq 'RED' && $conexists eq 'off' );
178 if ($$hash{$key}[28] eq 'ON'){
179 $command='iptables -t nat -A';
180 $natip=&get_nat_ip
($$hash{$key}[29]);
181 if($$hash{$key}[31] eq 'dnat'){
182 $$hash{$key}[0]='DNAT';
183 $fireport='--dport '.$$hash{$key}[30] if ($$hash{$key}[30]>0);
185 $$hash{$key}[0]='SNAT';
189 if($$hash{$key}[2] eq 'ON'){
191 if ($$hash{$key}[3] eq 'cust_grp_src'){
192 foreach my $grp (sort {$a <=> $b} keys %customgrp){
193 if($customgrp{$grp}[0] eq $$hash{$key}[4]){
194 &get_address
($customgrp{$grp}[3],$customgrp{$grp}[2],"src");
198 &get_address
($$hash{$key}[3],$$hash{$key}[4],"src");
201 if ($$hash{$key}[5] eq 'cust_grp_tgt'){
202 foreach my $grp (sort {$a <=> $b} keys %customgrp){
203 if($customgrp{$grp}[0] eq $$hash{$key}[6]){
204 &get_address
($customgrp{$grp}[3],$customgrp{$grp}[2],"tgt");
207 }elsif($$hash{$key}[5] eq 'ipfire'){
208 if($$hash{$key}[6] eq 'Default IP'){
209 open(FILE
, "/var/ipfire/red/local-ipaddress") or die 'Unable to open config file.';
210 $targethash{$key}[0]= <FILE
>;
213 foreach my $alias (sort keys %aliases){
214 if ($$hash{$key}[6] eq $alias){
215 $targethash{$key}[0]=$aliases{$alias}{'IPT'};
220 &get_address
($$hash{$key}[5],$$hash{$key}[6],"tgt");
222 ##get source prot and port
224 $SPROT = &get_prot
($hash,$key);
225 $SPORT = &get_port
($hash,$key);
228 ##get target prot and port
229 $DPROT=&get_prot
($hash,$key);
231 if ($DPROT eq ''){$DPROT=' ';}
232 @DPROT=split(",",$DPROT);
235 if($$hash{$key}[18] eq 'ON'){
236 my ($time1,$time2,$daylight);
237 my $daylight=$$hash{$key}[28];
238 $time1=&get_time
($$hash{$key}[26],$daylight);
239 $time2=&get_time
($$hash{$key}[27],$daylight);
240 if($$hash{$key}[19] ne ''){push (@timeframe,"Mon");}
241 if($$hash{$key}[20] ne ''){push (@timeframe,"Tue");}
242 if($$hash{$key}[21] ne ''){push (@timeframe,"Wed");}
243 if($$hash{$key}[22] ne ''){push (@timeframe,"Thu");}
244 if($$hash{$key}[23] ne ''){push (@timeframe,"Fri");}
245 if($$hash{$key}[24] ne ''){push (@timeframe,"Sat");}
246 if($$hash{$key}[25] ne ''){push (@timeframe,"Sun");}
247 $TIME=join(",",@timeframe);
249 $TIMEFROM="--timestart $time1 ";
250 $TIMETILL="--timestop $time2 ";
251 $TIME="-m time --weekdays $TIME $TIMEFROM $TIMETILL";
255 foreach my $i (0 .. $#{$$hash{$key}}){
256 print "$i: $$hash{$key}[$i] ";
259 print"##################################\n";
260 #print rules to console
261 foreach my $DPROT (@DPROT){
262 $DPORT = &get_port
($hash,$key,$DPROT);
263 if ($SPROT ne ''){$PROT=$SPROT;}else{$PROT=$DPROT;}
264 $PROT="-p $PROT" if ($PROT ne '' && $PROT ne ' ');
265 foreach my $a (sort keys %sourcehash){
266 foreach my $b (sort keys %targethash){
267 if ($sourcehash{$a}[0] ne $targethash{$b}[0] && $targethash{$b}[0] ne 'none' || $sourcehash{$a}[0] eq '0.0.0.0/0.0.0.0'){
268 if($SPROT eq '' || $SPROT eq $DPROT || $DPROT eq ' '){
269 if(substr($sourcehash{$a}[0], 3, 3) ne 'mac' && $sourcehash{$a}[0] ne ''){ $STAG="-s";}
270 if(substr($DPORT, 2, 4) eq 'icmp'){
271 my @icmprule= split(",",substr($DPORT, 12,));
273 if ($$hash{$key}[17] eq 'ON'){
274 print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] --icmp-type $_ $TIME -j LOG\n";
276 print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] --icmp-type $_ $TIME -j $$hash{$key}[0]\n";
278 }elsif($$hash{$key}[28] ne 'ON'){
279 if ($$hash{$key}[17] eq 'ON'){
280 print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n";
282 print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
283 }elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[32] eq 'dnat'){
284 #if ($$hash{$key}[17] eq 'ON'){
285 #print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $targethash{$b}[0] $DPORT $TIME -j LOG\n";
287 print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j $$hash{$key}[0] --to $targethash{$b}[0]$DPORT\n";
288 }elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[32] eq 'snat'){
289 print "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0] --to $natip$fireport\n";
297 }elsif($MODE eq '0'){
298 foreach my $DPROT (@DPROT){
299 $DPORT = &get_port
($hash,$key,$DPROT);
300 if ($SPROT ne ''){$PROT=$SPROT;}else{$PROT=$DPROT;}
301 $PROT="-p $PROT" if ($PROT ne '' && $PROT ne ' ');
302 foreach my $a (sort keys %sourcehash){
303 foreach my $b (sort keys %targethash){
304 if ($sourcehash{$a}[0] ne $targethash{$b}[0] && $targethash{$b}[0] ne 'none' || $sourcehash{$a}[0] eq '0.0.0.0/0.0.0.0'){
305 if($SPROT eq '' || $SPROT eq $DPROT || $DPROT eq ' '){
306 if(substr($sourcehash{$a}[0], 3, 3) ne 'mac' && $sourcehash{$a}[0] ne ''){ $STAG="-s";}
307 if(substr($DPORT, 2, 4) eq 'icmp'){
308 my @icmprule= split(",",substr($DPORT, 12,));
310 if ($$hash{$key}[17] eq 'ON'){
311 system ("$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] -- icmp-type $_ $TIME -j LOG");
313 system ("$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] --icmp-type $_ $TIME -j $$hash{$key}[0]");
315 }elsif($$hash{$key}[28] ne 'ON'){
316 if ($$hash{$key}[17] eq 'ON'){
317 system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n";
319 system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
320 }elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat'){
321 if ($$hash{$key}[17] eq 'ON'){
322 system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j LOG --log-prefix 'DNAT' \n";
324 my $fwaccessdport="--dport ".substr($DPORT,1,) if ($DPORT);
325 my ($ip,$sub) =split("/",$targethash{$b}[0]);
326 system "iptables -A PORTFWACCESS $PROT $STAG $sourcehash{$a}[0] -d $targethash{$b}[0] $fwaccessdport $TIME \n";
327 system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j $$hash{$key}[0] --to $ip$DPORT\n";
328 }elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'snat'){
329 if ($$hash{$key}[17] eq 'ON'){
330 system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG --log-prefix 'SNAT '\n";
332 system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0] --to $natip$fireport\n";
353 if($val eq 'RED' || $val eq 'GREEN' || $val eq 'ORANGE' || $val eq 'BLUE'){
354 $result=$defaultNetworks{$val.'_ADDRESS'};
355 }elsif($val eq 'ALL'){
357 }elsif($val eq 'Default IP'){
358 $result='-d '.$redip;
360 foreach my $al (sort keys %aliases){
362 $result='-d '.$aliases{$al}{'IPT'};
375 $minutes = &utcmin
($val);
376 $ruletime = $minutes + &time_get_utc
($val);
377 if ($ruletime < 0){$ruletime +=1440;}
378 if ($ruletime > 1440){$ruletime -=1440;}
379 $time=sprintf "%02d:%02d", $ruletime / 60, $ruletime % 60;
384 # Calculates the UTCtime from a given time
386 my @localtime=localtime(time);
387 my @gmtime=gmtime(time);
388 my $diff = ($gmtime[2]*60+$gmtime[1]%60)-($localtime[2]*60+$localtime[1]%60);
394 my ($hrs,$min) = split(":",$ruletime);
395 my $newtime = $hrs*60+$min;
402 open( FILE
, "< $p2pfile" ) or die "Unable to read $p2pfile";
405 my $CMD = "-m ipp2p";
406 foreach my $p2pentry (sort @p2ps) {
407 my @p2pline = split( /\;/, $p2pentry );
408 if ( $fwdfwsettings{'POLICY'} eq 'MODE1' ) {
410 if ("$p2pline[2]" eq "on") {
411 $P2PSTRING = "$P2PSTRING --$p2pline[1]";
415 if ("$p2pline[2]" eq "off") {
416 $P2PSTRING = "$P2PSTRING --$p2pline[1]";
422 print"/sbin/iptables -A FORWARDFW $CMD $P2PSTRING -j $DO\n";
426 system("/sbin/iptables -A FORWARDFW $CMD $P2PSTRING -j $DO");
432 my $base=shift; #source of checking ($configfwdfw{$key}[x] or groupkey
434 my $type=shift; #src or tgt
441 my $key = &General
::findhasharraykey
($hash);
442 if($base eq 'src_addr' || $base eq 'tgt_addr' ){
443 if (&General
::validmac
($base2)){
444 $$hash{$key}[0] = "-m mac --mac-source $base2";
446 $$hash{$key}[0] = $base2;
448 }elsif($base eq 'std_net_src' || $base eq 'std_net_tgt' || $base eq 'Standard Network'){
449 $$hash{$key}[0]=&fwlib
::get_std_net_ip
($base2,$con);
450 }elsif($base eq 'cust_net_src' || $base eq 'cust_net_tgt' || $base eq 'Custom Network'){
451 $$hash{$key}[0]=&fwlib
::get_net_ip
($base2);
452 }elsif($base eq 'cust_host_src' || $base eq 'cust_host_tgt' || $base eq 'Custom Host'){
453 $$hash{$key}[0]=&fwlib
::get_host_ip
($base2,$type);
454 }elsif($base eq 'ovpn_net_src' || $base eq 'ovpn_net_tgt' || $base eq 'OpenVPN static network'){
455 $$hash{$key}[0]=&fwlib
::get_ovpn_net_ip
($base2,1);
456 }elsif($base eq 'ovpn_host_src' ||$base eq 'ovpn_host_tgt' || $base eq 'OpenVPN static host'){
457 $$hash{$key}[0]=&fwlib
::get_ovpn_host_ip
($base2,33);
458 }elsif($base eq 'ovpn_n2n_src' ||$base eq 'ovpn_n2n_tgt' || $base eq 'OpenVPN N-2-N'){
459 $$hash{$key}[0]=&fwlib
::get_ovpn_n2n_ip
($base2,27);
460 }elsif($base eq 'ipsec_net_src' || $base eq 'ipsec_net_tgt' || $base eq 'IpSec Network'){
461 $$hash{$key}[0]=&fwlib
::get_ipsec_net_ip
($base2,11);
468 if ($$hash{$key}[7] eq 'ON' && $SRC_TGT eq 'SRC'){
469 if ($$hash{$key}[10] ne ''){
470 return"$$hash{$key}[8]";
471 }elsif($$hash{$key}[9] ne ''){
472 return"$$hash{$key}[8]";
474 return "$$hash{$key}[8]";
476 }elsif($$hash{$key}[11] eq 'ON' && $SRC_TGT eq ''){
477 if ($$hash{$key}[14] eq 'TGT_PORT'){
478 if ($$hash{$key}[15] ne ''){
479 return "$$hash{$key}[12]";
480 }elsif($$hash{$key}[13] ne ''){
481 return "$$hash{$key}[12]";
483 return "$$hash{$key}[12]";
485 }elsif($$hash{$key}[14] eq 'cust_srv'){
486 return &fwlib
::get_srv_prot
($$hash{$key}[15]);
488 }elsif($$hash{$key}[14] eq 'cust_srvgrp'){
489 return &fwlib
::get_srvgrp_prot
($$hash{$key}[15]);
498 if ($$hash{$key}[7] eq 'ON' && $SRC_TGT eq 'SRC'){
499 if ($$hash{$key}[10] ne ''){
500 $$hash{$key}[10] =~ s/\|/,/g;
501 if(index($$hash{$key}[10],",") > 0){
502 return "-m multiport --sport $$hash{$key}[10] ";
504 if($$hash{$key}[28] ne 'ON' || ($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'snat') ||($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat') ){
505 return "--sport $$hash{$key}[10] ";
507 return ":$$hash{$key}[10]";
510 }elsif($$hash{$key}[9] ne '' && $$hash{$key}[9] ne 'All ICMP-Types'){
511 return "--icmp-type $$hash{$key}[9] ";
512 }elsif($$hash{$key}[9] eq 'All ICMP-Types'){
515 }elsif($$hash{$key}[11] eq 'ON' && $SRC_TGT eq ''){
517 if($$hash{$key}[14] eq 'TGT_PORT'){
518 if ($$hash{$key}[15] ne ''){
519 $$hash{$key}[15] =~ s/\|/,/g;
520 if(index($$hash{$key}[15],",") > 0){
521 return "-m multiport --dport $$hash{$key}[15] ";
523 if($$hash{$key}[28] ne 'ON' || ($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'snat') ){
524 return "--dport $$hash{$key}[15] ";
526 return ":$$hash{$key}[15]";
529 }elsif($$hash{$key}[13] ne '' && $$hash{$key}[13] ne 'All ICMP-Types'){
530 return "--icmp-type $$hash{$key}[13] ";
531 }elsif($$hash{$key}[13] ne '' && $$hash{$key}[13] eq 'All ICMP-Types'){
534 }elsif($$hash{$key}[14] eq 'cust_srv'){
535 if ($prot ne 'ICMP'){
536 return "--dport ".&fwlib
::get_srv_port
($$hash{$key}[15],1,$prot);
537 }elsif($prot eq 'ICMP' && $$hash{$key}[15] ne 'All ICMP-Types'){
538 return "--icmp-type ".&fwlib
::get_srv_port
($$hash{$key}[15],3,$prot);
539 }elsif($prot eq 'ICMP' && $$hash{$key}[15] eq 'All ICMP-Types'){
542 }elsif($$hash{$key}[14] eq 'cust_srvgrp'){
543 if ($prot ne 'ICMP'){
544 return &fwlib
::get_srvgrp_port
($$hash{$key}[15],$prot);
546 elsif($prot eq 'ICMP'){
547 return &fwlib
::get_srvgrp_port
($$hash{$key}[15],$prot);