config/firewall/rules.pl

   1 #!/usr/bin/perl
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2013 Alexander Marx <amarx@ipfire.org>                        #
   6 #                                                                             #
   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.                                         #
  11 #                                                                             #
  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.                                #
  16 #                                                                             #
  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/>.       #
  19 #                                                                             #
  20 ###############################################################################
  21
  22 use strict;
  23 use Time::Local;
  24 no warnings 'uninitialized';
  25
  26 require '/var/ipfire/general-functions.pl';
  27 require "${General::swroot}/lang.pl";
  28 require "/usr/lib/firewall/firewall-lib.pl";
  29
  30 # Set to one to enable debugging mode.
  31 my $DEBUG = 0;
  32
  33 my $IPTABLES = "iptables --wait";
  34
  35 my %fwdfwsettings=();
  36 my %defaultNetworks=();
  37 my %configfwdfw=();
  38 my %color=();
  39 my %icmptypes=();
  40 my %ovpnSettings=();
  41 my %customgrp=();
  42 our %sourcehash=();
  43 our %targethash=();
  44 my @timeframe=();
  45 my %configinputfw=();
  46 my %configoutgoingfw=();
  47 my %confignatfw=();
  48 my %aliases=();
  49 my @DPROT=();
  50 my @p2ps=();
  51
  52 my $configfwdfw         = "${General::swroot}/firewall/config";
  53 my $configinput     = "${General::swroot}/firewall/input";
  54 my $configoutgoing  = "${General::swroot}/firewall/outgoing";
  55 my $p2pfile                     = "${General::swroot}/firewall/p2protocols";
  56 my $configgrp           = "${General::swroot}/fwhosts/customgroups";
  57 my $netsettings         = "${General::swroot}/ethernet/settings";
  58 my $errormessage        = '';
  59 my $orange                      = '';
  60 my $green                       = '';
  61 my $blue                        = '';
  62 my ($TYPE,$PROT,$SPROT,$DPROT,$SPORT,$DPORT,$TIME,$TIMEFROM,$TIMETILL,$SRC_TGT);
  63 my $CHAIN                       = "FORWARDFW";
  64 my $conexists           = 'off';
  65 my $dnat                        ='';
  66 my $snat                        ='';
  67
  68 &General::readhash("${General::swroot}/firewall/settings", \%fwdfwsettings);
  69 &General::readhash("$netsettings", \%defaultNetworks);
  70 &General::readhasharray($configfwdfw, \%configfwdfw);
  71 &General::readhasharray($configinput, \%configinputfw);
  72 &General::readhasharray($configoutgoing, \%configoutgoingfw);
  73 &General::readhasharray($configgrp, \%customgrp);
  74 &General::get_aliases(\%aliases);
  75
  76 #check if we have an internetconnection
  77 open (CONN,"/var/ipfire/red/iface");
  78 my $con = <CONN>;
  79 close(CONN);
  80
  81 if (-f "/var/ipfire/red/active"){
  82         $conexists='on';
  83 }
  84
  85 open (CONN1,"/var/ipfire/red/local-ipaddress");
  86 my $redip = <CONN1>;
  87 close(CONN1);
  88
  89 # MAIN
  90 &main();
  91
  92 sub main {
  93         # Flush all chains.
  94         &flush();
  95
  96         # Reload firewall rules.
  97         &preparerules();
  98
  99         # Load P2P block rules.
 100         &p2pblock();
 101
 102         # Reload firewall policy.
 103         run("/usr/sbin/firewall-policy");
 104 }
 105
 106 sub run {
 107         # Executes or prints the given shell command.
 108         my $command = shift;
 109
 110         if ($DEBUG) {
 111                 print "$command\n";
 112         } else {
 113                 system "$command";
 114         }
 115 }
 116
 117 sub flush {
 118         run("$IPTABLES -F FORWARDFW");
 119         run("$IPTABLES -F INPUTFW");
 120         run("$IPTABLES -F OUTGOINGFW");
 121         run("$IPTABLES -t nat -F NAT_DESTINATION");
 122         run("$IPTABLES -t nat -F NAT_SOURCE");
 123 }
 124
 125 sub preparerules {
 126         if (! -z  "${General::swroot}/firewall/config"){
 127                 &buildrules(\%configfwdfw);
 128         }
 129         if (! -z  "${General::swroot}/firewall/input"){
 130                 &buildrules(\%configinputfw);
 131         }
 132         if (! -z  "${General::swroot}/firewall/outgoing"){
 133                 &buildrules(\%configoutgoingfw);
 134         }
 135 }
 136
 137 sub buildrules {
 138         my $hash=shift;
 139         my $STAG;
 140         my $natip;
 141         my $snatport;
 142         my $fireport;
 143         my $nat;
 144         my $fwaccessdport;
 145         my $natchain;
 146         my $icmptype;
 147         foreach my $key (sort {$a <=> $b} keys %$hash){
 148                 next if (($$hash{$key}[6] eq 'RED' || $$hash{$key}[6] eq 'RED1') && $conexists eq 'off' );
 149                 if ($$hash{$key}[28] eq 'ON'){
 150                         $natip=&get_nat_ip($$hash{$key}[29],$$hash{$key}[31]);
 151                         if($$hash{$key}[31] eq 'dnat'){
 152                                 $nat='DNAT';
 153                                 if ($$hash{$key}[30] =~ /\|/){
 154                                         $$hash{$key}[30]=~ tr/|/,/;
 155                                         $fireport='-m multiport --dport '.$$hash{$key}[30];
 156                                 }else{
 157                                         $fireport='--dport '.$$hash{$key}[30] if ($$hash{$key}[30]>0);
 158                                 }
 159                         }else{
 160                                 $nat='SNAT';
 161                         }
 162                 }
 163                 $STAG='';
 164                 if($$hash{$key}[2] eq 'ON'){
 165                         #get source ip's
 166                         if ($$hash{$key}[3] eq 'cust_grp_src'){
 167                                 foreach my $grp (sort {$a <=> $b} keys %customgrp){
 168                                                 if($customgrp{$grp}[0] eq $$hash{$key}[4]){
 169                                                 &get_address($customgrp{$grp}[3],$customgrp{$grp}[2],"src");
 170                                         }
 171                                 }
 172                         }else{
 173                                 &get_address($$hash{$key}[3],$$hash{$key}[4],"src");
 174                         }
 175                         #get target ip's
 176                         if ($$hash{$key}[5] eq 'cust_grp_tgt'){
 177                                 foreach my $grp (sort {$a <=> $b} keys %customgrp){
 178                                         if($customgrp{$grp}[0] eq $$hash{$key}[6]){
 179                                                 &get_address($customgrp{$grp}[3],$customgrp{$grp}[2],"tgt");
 180                                         }
 181                                 }
 182                         }elsif($$hash{$key}[5] eq 'ipfire' ){
 183                                 if($$hash{$key}[6] eq 'GREEN'){
 184                                         $targethash{$key}[0]=$defaultNetworks{'GREEN_ADDRESS'};
 185                                 }
 186                                 if($$hash{$key}[6] eq 'BLUE'){
 187                                         $targethash{$key}[0]=$defaultNetworks{'BLUE_ADDRESS'};
 188                                 }
 189                                 if($$hash{$key}[6] eq 'ORANGE'){
 190                                         $targethash{$key}[0]=$defaultNetworks{'ORANGE_ADDRESS'};
 191                                 }
 192                                 if($$hash{$key}[6] eq 'ALL'){
 193                                         $targethash{$key}[0]='0.0.0.0/0';
 194                                 }
 195                                 if($$hash{$key}[6] eq 'RED' || $$hash{$key}[6] eq 'RED1'){
 196                                         open(FILE, "/var/ipfire/red/local-ipaddress")or die "Couldn't open local-ipaddress";
 197                                         $targethash{$key}[0]= <FILE>;
 198                                         close(FILE);
 199                                 }else{
 200                                         foreach my $alias (sort keys %aliases){
 201                                                 if ($$hash{$key}[6] eq $alias){
 202                                                         $targethash{$key}[0]=$aliases{$alias}{'IPT'};
 203                                                 }
 204                                         }
 205                                 }
 206                         }else{
 207                                 &get_address($$hash{$key}[5],$$hash{$key}[6],"tgt");
 208                         }
 209                         ##get source prot and port
 210                         $SRC_TGT='SRC';
 211                         $SPORT = &get_port($hash,$key);
 212                         $SRC_TGT='';
 213
 214                         ##get target prot and port
 215                         $DPROT=&get_prot($hash,$key);
 216
 217                         if ($DPROT eq ''){$DPROT=' ';}
 218                         @DPROT=split(",",$DPROT);
 219
 220                         #get time if defined
 221                         if($$hash{$key}[18] eq 'ON'){
 222                                 my ($time1,$time2,$daylight);
 223                                 my $daylight=$$hash{$key}[28];
 224                                 $time1=&get_time($$hash{$key}[26],$daylight);
 225                                 $time2=&get_time($$hash{$key}[27],$daylight);
 226                                 if($$hash{$key}[19] ne ''){push (@timeframe,"Mon");}
 227                                 if($$hash{$key}[20] ne ''){push (@timeframe,"Tue");}
 228                                 if($$hash{$key}[21] ne ''){push (@timeframe,"Wed");}
 229                                 if($$hash{$key}[22] ne ''){push (@timeframe,"Thu");}
 230                                 if($$hash{$key}[23] ne ''){push (@timeframe,"Fri");}
 231                                 if($$hash{$key}[24] ne ''){push (@timeframe,"Sat");}
 232                                 if($$hash{$key}[25] ne ''){push (@timeframe,"Sun");}
 233                                 $TIME=join(",",@timeframe);
 234
 235                                 $TIMEFROM="--timestart $time1 ";
 236                                 $TIMETILL="--timestop $time2 ";
 237                                 $TIME="-m time --weekdays $TIME $TIMEFROM $TIMETILL";
 238                         }
 239                         foreach my $DPROT (@DPROT){
 240                                 $DPORT = &get_port($hash,$key,$DPROT);
 241                                 $PROT=$DPROT;
 242                                 $PROT="-p $PROT" if ($PROT ne '' && $PROT ne ' ');
 243                                 if ($DPROT ne 'TCP' && $DPROT ne'UDP' && $DPROT ne 'ICMP' ){
 244                                         $DPORT='';
 245                                 }
 246                                 foreach my $a (sort keys %sourcehash){
 247                                         foreach my $b (sort keys %targethash){
 248                                                 if(! $sourcehash{$a}[0] || ! $targethash{$b}[0] || ($natip eq '-d ' && $$hash{$key}[28] eq 'ON') || (!$natip && $$hash{$key}[28] eq 'ON')){
 249                                                         #Skip rules when no RED IP is set (DHCP,DSL)
 250                                                         next;
 251                                                 }
 252                                                 next if ($targethash{$b}[0] eq 'none');
 253                                                 $STAG='';
 254                                                 if ($sourcehash{$a}[0] ne $targethash{$b}[0] && $targethash{$b}[0] ne 'none' || $sourcehash{$a}[0] eq '0.0.0.0/0.0.0.0'){
 255                                                         if($DPROT ne ''){
 256                                                                 if(substr($sourcehash{$a}[0], 3, 3) ne 'mac' && $sourcehash{$a}[0] ne ''){ $STAG="-s";}
 257                                                                 #Process ICMP RULE
 258                                                                 if(substr($DPORT, 2, 4) eq 'icmp'){
 259                                                                         my @icmprule= split(",",substr($DPORT, 12,));
 260                                                                         foreach (@icmprule){
 261                                                                                 $icmptype="--icmp-type ";
 262                                                                                 if ($_ eq "BLANK") {
 263                                                                                                 $icmptype="";
 264                                                                                                 $_="";
 265                                                                                 }
 266                                                                                 if ($$hash{$key}[17] eq 'ON'){
 267                                                                                         run("$IPTABLES -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $icmptype $_ $TIME -j LOG");
 268                                                                                 }
 269                                                                                         run("$IPTABLES -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $icmptype $_ $TIME -j $$hash{$key}[0]");
 270                                                                         }
 271                                                                 #PROCESS DNAT RULE (Portforward)
 272                                                                 }elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat'){
 273                                                                         $natchain='NAT_DESTINATION';
 274                                                                         if ($$hash{$key}[17] eq 'ON'){
 275                                                                                 run("$IPTABLES -t nat -A $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j LOG --log-prefix 'DNAT'");
 276                                                                         }
 277                                                                         my ($ip,$sub) =split("/",$targethash{$b}[0]);
 278                                                                         #Process NAT with servicegroup used
 279                                                                         if ($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat' && $$hash{$key}[14] eq 'cust_srvgrp'){
 280                                                                                 run("$IPTABLES -t nat -A $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j $nat --to-destination $ip $DPORT");
 281                                                                                 $fwaccessdport=$DPORT;
 282                                                                         }else{
 283                                                                                 run("$IPTABLES -t nat -A $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j $nat --to-destination $ip$DPORT");
 284                                                                                 $DPORT =~ s/\-/:/g;
 285                                                                                 if ($DPORT){
 286                                                                                         $fwaccessdport="--dport ".substr($DPORT,1,);
 287                                                                                 }elsif(! $DPORT && $$hash{$key}[30] ne ''){
 288                                                                                         if ($$hash{$key}[30]=~m/|/i){
 289                                                                                                 $$hash{$key}[30] =~ s/\|/,/g;
 290                                                                                                 $fwaccessdport="-m multiport --dport $$hash{$key}[30]";
 291                                                                                         }else{
 292                                                                                                 $fwaccessdport="--dport $$hash{$key}[30]";
 293                                                                                         }
 294                                                                                 }
 295                                                                         }
 296                                                                         run("$IPTABLES -A FORWARDFW $PROT $STAG $sourcehash{$a}[0] -d $ip $fwaccessdport $TIME -j $$hash{$key}[0]");
 297                                                                         next;
 298                                                                 #PROCESS SNAT RULE
 299                                                                 }elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'snat'){
 300                                                                         $natchain='NAT_SOURCE';
 301                                                                         if ($$hash{$key}[17] eq 'ON' ){
 302                                                                                 run("$IPTABLES -t nat -A $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG --log-prefix 'SNAT'");
 303                                                                         }
 304                                                                         run("$IPTABLES -t nat -A $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $nat --to-source $natip");
 305                                                                 }
 306                                                                 #PROCESS EVERY OTHER RULE (If NOT ICMP, else the rule would be applied double)
 307                                                                 if ($PROT ne '-p ICMP'){
 308                                                                         if ($$hash{$key}[17] eq 'ON' && $$hash{$key}[28] ne 'ON'){
 309                                                                                 run("$IPTABLES -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG");
 310                                                                         }
 311                                                                         run("$IPTABLES -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]");
 312                                                                 }
 313                                                                 #PROCESS Prot ICMP and type = All ICMP-Types
 314                                                                 if ($PROT eq '-p ICMP' && $$hash{$key}[9] eq 'All ICMP-Types'){
 315                                                                         if ($$hash{$key}[17] eq 'ON' && $$hash{$key}[28] ne 'ON'){
 316                                                                                 run("$IPTABLES -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG");
 317                                                                         }
 318                                                                         run("$IPTABLES -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]");
 319                                                                 }
 320                                                         }
 321                                                 }
 322                                         }
 323                                 }
 324                         }
 325                 }
 326                 %sourcehash=();
 327                 %targethash=();
 328                 undef $TIME;
 329                 undef $TIMEFROM;
 330                 undef $TIMETILL;
 331                 undef $fireport;
 332         }
 333 }
 334
 335 sub get_nat_ip {
 336         my $val=shift;
 337         my $type=shift;
 338         my $result;
 339         if($val eq 'RED' || $val eq 'GREEN' || $val eq 'ORANGE' || $val eq 'BLUE'){
 340                 $result=$defaultNetworks{$val.'_ADDRESS'};
 341         }elsif($val eq 'ALL'){
 342                 $result='-i '.$con;
 343         }elsif($val eq 'Default IP' && $type eq 'dnat'){
 344                 $result='-d '.$redip;
 345         }elsif($val eq 'Default IP' && $type eq 'snat'){
 346                 $result=$redip;
 347         }else{
 348                 foreach my $al (sort keys %aliases){
 349                         if($val eq $al && $type eq 'dnat'){
 350                                 $result='-d '.$aliases{$al}{'IPT'};
 351                         }elsif($val eq $al && $type eq 'snat'){
 352                                 $result=$aliases{$al}{'IPT'};
 353                         }
 354                 }
 355         }
 356         return $result;
 357 }
 358
 359 sub get_time {
 360         my $val=shift;
 361         my $val1=shift;
 362         my $time;
 363         my $minutes;
 364         my $ruletime;
 365         $minutes = &utcmin($val);
 366         $ruletime = $minutes + &time_get_utc($val);
 367         if ($ruletime < 0){$ruletime +=1440;}
 368         if ($ruletime > 1440){$ruletime -=1440;}
 369         $time=sprintf "%02d:%02d", $ruletime / 60, $ruletime % 60;
 370         return $time;
 371 }
 372
 373 sub time_get_utc {
 374         # Calculates the UTCtime from a given time
 375         my $val=shift;
 376         my @localtime=localtime(time);
 377         my @gmtime=gmtime(time);
 378         my $diff = ($gmtime[2]*60+$gmtime[1]%60)-($localtime[2]*60+$localtime[1]%60);
 379         return $diff;
 380 }
 381
 382 sub utcmin {
 383         my $ruletime=shift;
 384         my ($hrs,$min) = split(":",$ruletime);
 385         my $newtime = $hrs*60+$min;
 386         return $newtime;
 387 }
 388
 389 sub p2pblock {
 390         my $P2PSTRING;
 391         my $DO;
 392         open( FILE, "< $p2pfile" ) or die "Unable to read $p2pfile";
 393         @p2ps = <FILE>;
 394         close FILE;
 395         my $CMD = "-m ipp2p";
 396         foreach my $p2pentry (sort @p2ps) {
 397                 my @p2pline = split( /\;/, $p2pentry );
 398                 if ( $fwdfwsettings{'POLICY'} eq 'MODE1' ) {
 399                         $DO = "ACCEPT";
 400                         if ("$p2pline[2]" eq "on") {
 401                                 $P2PSTRING = "$P2PSTRING --$p2pline[1]";
 402                         }
 403                 }else {
 404                         $DO = "RETURN";
 405                         if ("$p2pline[2]" eq "off") {
 406                                 $P2PSTRING = "$P2PSTRING --$p2pline[1]";
 407                         }
 408                 }
 409         }
 410
 411         if($P2PSTRING) {
 412                 run("$IPTABLES -A FORWARDFW $CMD $P2PSTRING -j $DO");
 413         }
 414 }
 415
 416 sub get_address {
 417         my $base=shift; #source of checking ($configfwdfw{$key}[x] or groupkey
 418         my $base2=shift;
 419         my $type=shift; #src or tgt
 420         my $hash;
 421         if ($type eq 'src'){
 422                 $hash=\%sourcehash;
 423         }else{
 424                 $hash=\%targethash;
 425         }
 426         my $key = &General::findhasharraykey($hash);
 427         if($base eq 'src_addr' || $base eq 'tgt_addr' ){
 428                 if (&General::validmac($base2)){
 429                         $$hash{$key}[0] = "-m mac --mac-source $base2";
 430                 }else{
 431                         $$hash{$key}[0] = $base2;
 432                 }
 433         }elsif($base eq 'std_net_src' || $base eq 'std_net_tgt' || $base eq 'Standard Network'){
 434                 $$hash{$key}[0]=&fwlib::get_std_net_ip($base2,$con);
 435         }elsif($base eq 'cust_net_src' || $base eq 'cust_net_tgt' || $base eq 'Custom Network'){
 436                 $$hash{$key}[0]=&fwlib::get_net_ip($base2);
 437         }elsif($base eq 'cust_host_src' || $base eq 'cust_host_tgt' || $base eq 'Custom Host'){
 438                 $$hash{$key}[0]=&fwlib::get_host_ip($base2,$type);
 439         }elsif($base eq 'ovpn_net_src' || $base eq 'ovpn_net_tgt' || $base eq 'OpenVPN static network'){
 440                 $$hash{$key}[0]=&fwlib::get_ovpn_net_ip($base2,1);
 441         }elsif($base eq 'ovpn_host_src' ||$base eq 'ovpn_host_tgt' || $base eq 'OpenVPN static host'){
 442                 $$hash{$key}[0]=&fwlib::get_ovpn_host_ip($base2,33);
 443         }elsif($base eq 'ovpn_n2n_src' ||$base eq 'ovpn_n2n_tgt' || $base eq 'OpenVPN N-2-N'){
 444                 $$hash{$key}[0]=&fwlib::get_ovpn_n2n_ip($base2,11);
 445         }elsif($base eq 'ipsec_net_src' || $base eq 'ipsec_net_tgt' || $base eq 'IpSec Network'){
 446                 $$hash{$key}[0]=&fwlib::get_ipsec_net_ip($base2,11);
 447         }elsif($base eq 'ipfire_src' ){
 448                 if($base2 eq 'GREEN'){
 449                         $$hash{$key}[0]=$defaultNetworks{'GREEN_ADDRESS'};
 450                 }
 451                 if($base2 eq 'BLUE'){
 452                         $$hash{$key}[0]=$defaultNetworks{'BLUE_ADDRESS'};
 453                 }
 454                 if($base2 eq 'ORANGE'){
 455                         $$hash{$key}[0]=$defaultNetworks{'ORANGE_ADDRESS'};
 456                 }
 457                 if($base2 eq 'ALL'){
 458                         $$hash{$key}[0]='0.0.0.0/0';
 459                 }
 460                 if($base2 eq 'RED' || $base2 eq 'RED1'){
 461                         open(FILE, "/var/ipfire/red/local-ipaddress");
 462                         $$hash{$key}[0]= <FILE>;
 463                         close(FILE);
 464                 }else{
 465                         foreach my $alias (sort keys %aliases){
 466                                 if ($base2 eq $alias){
 467                                         $$hash{$key}[0]=$aliases{$alias}{'IPT'};
 468                                 }
 469                         }
 470                 }
 471         }
 472 }
 473
 474 sub get_prot {
 475         my $hash=shift;
 476         my $key=shift;
 477         #check AH,GRE,ESP or ICMP
 478         if ($$hash{$key}[7] ne 'ON' && $$hash{$key}[11] ne 'ON'){
 479                 return "$$hash{$key}[8]";
 480         }
 481         if ($$hash{$key}[7] eq 'ON' || $$hash{$key}[11] eq 'ON'){
 482                 #check if servicegroup or service
 483                 if($$hash{$key}[14] eq 'cust_srv'){
 484                         return &fwlib::get_srv_prot($$hash{$key}[15]);
 485                 }elsif($$hash{$key}[14] eq 'cust_srvgrp'){
 486                         return &fwlib::get_srvgrp_prot($$hash{$key}[15]);
 487                 }elsif (($$hash{$key}[10] ne '' || $$hash{$key}[15] ne '') && $$hash{$key}[8] eq ''){ #when ports are used and prot set to "all"
 488                         return "TCP,UDP";
 489                 }elsif (($$hash{$key}[10] ne '' || $$hash{$key}[15] ne '') && ($$hash{$key}[8] eq 'TCP' || $$hash{$key}[8] eq 'UDP')){ #when ports are used and prot set to "tcp" or "udp"
 490                         return "$$hash{$key}[8]";
 491                 }elsif (($$hash{$key}[10] eq '' && $$hash{$key}[15] eq '') && $$hash{$key}[8] ne 'ICMP'){ #when ports are NOT used and prot NOT set to "ICMP"
 492                         return "$$hash{$key}[8]";
 493                 }else{
 494                         return "$$hash{$key}[8]";
 495                 }
 496         }
 497         #DNAT
 498         if ($SRC_TGT eq '' && $$hash{$key}[31] eq 'dnat' && $$hash{$key}[11] eq '' && $$hash{$key}[12] ne ''){
 499                 return "$$hash{$key}[8]";
 500         }
 501 }
 502
 503 sub get_port {
 504         my $hash=shift;
 505         my $key=shift;
 506         my $prot=shift;
 507         #Get manual defined Ports from SOURCE
 508         if ($$hash{$key}[7] eq 'ON' && $SRC_TGT eq 'SRC'){
 509                 if ($$hash{$key}[10] ne ''){
 510                         $$hash{$key}[10] =~ s/\|/,/g;
 511                         if(index($$hash{$key}[10],",") > 0){
 512                                 return "-m multiport --sport $$hash{$key}[10] ";
 513                         }else{
 514                                 if($$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')  ){
 515                                         return "--sport $$hash{$key}[10] ";
 516                                 }else{
 517                                         return ":$$hash{$key}[10]";
 518                                 }
 519                         }
 520                 }
 521                 #Get manual ports from TARGET
 522         }elsif($$hash{$key}[11] eq 'ON' && $SRC_TGT eq ''){
 523                 if($$hash{$key}[14] eq 'TGT_PORT'){
 524                         if ($$hash{$key}[15] ne ''){
 525                                 $$hash{$key}[15] =~ s/\|/,/g;
 526                                 if(index($$hash{$key}[15],",") > 0){
 527                                         return "-m multiport --dport $$hash{$key}[15] ";
 528                                 }else{
 529                                         if($$hash{$key}[28] ne 'ON' || ($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'snat') ){
 530                                                 return "--dport $$hash{$key}[15] ";
 531                                          }else{
 532                                                  $$hash{$key}[15] =~ s/\:/-/g;
 533                                                  return ":$$hash{$key}[15]";
 534                                          }
 535                                 }
 536                         }
 537                 #Get ports defined in custom Service (firewall-groups)
 538                 }elsif($$hash{$key}[14] eq 'cust_srv'){
 539                         if ($prot ne 'ICMP'){
 540                                 if($$hash{$key}[31] eq 'dnat' && $$hash{$key}[28] eq 'ON'){
 541                                         my $ports =&fwlib::get_srv_port($$hash{$key}[15],1,$prot);
 542                                         $ports =~ s/\:/-/g;
 543                                         return ":".$ports
 544                                 }else{
 545                                         return "--dport ".&fwlib::get_srv_port($$hash{$key}[15],1,$prot);
 546                                 }
 547                         }elsif($prot eq 'ICMP' && $$hash{$key}[11] eq 'ON'){        #When PROT is ICMP and "use targetport is checked, this is an icmp-service
 548                                 return "--icmp-type ".&fwlib::get_srv_port($$hash{$key}[15],3,$prot);
 549                         }
 550                 #Get ports from services which are used in custom servicegroups (firewall-groups)
 551                 }elsif($$hash{$key}[14] eq 'cust_srvgrp'){
 552                         if      ($prot ne 'ICMP'){
 553                                 return &fwlib::get_srvgrp_port($$hash{$key}[15],$prot);
 554                         }
 555                         elsif($prot eq 'ICMP'){
 556                                 return &fwlib::get_srvgrp_port($$hash{$key}[15],$prot);
 557                         }
 558                 }
 559         }
 560         #CHECK ICMP
 561         if ($$hash{$key}[7] ne 'ON' && $$hash{$key}[11] ne 'ON' && $SRC_TGT eq ''){
 562                 if($$hash{$key}[9] ne '' && $$hash{$key}[9] ne 'All ICMP-Types'){
 563                         return "--icmp-type $$hash{$key}[9] ";
 564                 }elsif($$hash{$key}[9] eq 'All ICMP-Types'){
 565                         return;
 566                 }
 567         }
 568 }