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 # enable only the following on debugging purpose
  27 #use warnings;
  28 #use CGI::Carp 'fatalsToBrowser';
  29
  30 my %fwdfwsettings=();
  31 my %defaultNetworks=();
  32 my %configfwdfw=();
  33 my %color=();
  34 my %icmptypes=();
  35 my %ovpnSettings=();
  36 my %customgrp=();
  37 our %sourcehash=();
  38 our %targethash=();
  39 my @timeframe=();
  40 my %configinputfw=();
  41 my %configoutgoingfw=();
  42 my %confignatfw=();
  43 my %aliases=();
  44 my @DPROT=();
  45 my @p2ps=();
  46 require '/var/ipfire/general-functions.pl';
  47 require "${General::swroot}/lang.pl";
  48 require "/usr/lib/firewall/firewall-lib.pl";
  49
  50 my $configfwdfw         = "${General::swroot}/firewall/config";
  51 my $configinput     = "${General::swroot}/firewall/input";
  52 my $configoutgoing  = "${General::swroot}/firewall/outgoing";
  53 my $p2pfile                     = "${General::swroot}/firewall/p2protocols";
  54 my $configgrp           = "${General::swroot}/fwhosts/customgroups";
  55 my $netsettings         = "${General::swroot}/ethernet/settings";
  56 my $errormessage        = '';
  57 my $orange                      = '';
  58 my $green                       = '';
  59 my $blue                        = '';
  60 my ($TYPE,$PROT,$SPROT,$DPROT,$SPORT,$DPORT,$TIME,$TIMEFROM,$TIMETILL,$SRC_TGT);
  61 my $CHAIN                       = "FORWARDFW";
  62 my $conexists           = 'off';
  63 my $command                     = 'iptables --wait -A';
  64 my $dnat                        ='';
  65 my $snat                        ='';
  66
  67 &General::readhash("${General::swroot}/firewall/settings", \%fwdfwsettings);
  68 &General::readhash("$netsettings", \%defaultNetworks);
  69 &General::readhasharray($configfwdfw, \%configfwdfw);
  70 &General::readhasharray($configinput, \%configinputfw);
  71 &General::readhasharray($configoutgoing, \%configoutgoingfw);
  72 &General::readhasharray($configgrp, \%customgrp);
  73 &General::get_aliases(\%aliases);
  74
  75 #check if we have an internetconnection
  76 open (CONN,"/var/ipfire/red/iface");
  77 my $con = <CONN>;
  78 close(CONN);
  79 if (-f "/var/ipfire/red/active"){
  80         $conexists='on';
  81 }
  82 open (CONN1,"/var/ipfire/red/local-ipaddress");
  83 my $redip = <CONN1>;
  84 close(CONN1);
  85 #################
  86 #    DEBUG/TEST #
  87 #################
  88 my $MODE=0;     # 0 - normal operation
  89                 # 1 - print configline and rules to console
  90                 #
  91 #################
  92 my $param=shift;
  93
  94 if($param eq 'flush'){
  95         if ($MODE eq '1'){
  96                 print " Flushing chains...\n";
  97         }
  98         &flush;
  99 }else{
 100         if ($MODE eq '1'){
 101                 print " Flushing chains...\n";
 102         }
 103         &flush;
 104         if ($MODE eq '1'){
 105                 print " Preparing rules...\n";
 106         }
 107         &preparerules;
 108         if($MODE eq '0'){
 109                 if ($fwdfwsettings{'POLICY'} eq 'MODE1'){
 110                         &p2pblock;
 111                         system ("/usr/sbin/firewall-policy");
 112                 }elsif($fwdfwsettings{'POLICY'} eq 'MODE2'){
 113                         &p2pblock;
 114                         system ("/usr/sbin/firewall-policy");
 115                 }
 116         }
 117 }
 118 sub flush
 119 {
 120         system ("iptables --wait -F FORWARDFW");
 121         system ("iptables --wait -F INPUTFW");
 122         system ("iptables --wait -F OUTGOINGFW");
 123         system ("iptables --wait -t nat -F NAT_DESTINATION");
 124         system ("iptables --wait -t nat -F NAT_SOURCE");
 125 }
 126 sub preparerules
 127 {
 128         if (! -z  "${General::swroot}/firewall/config"){
 129                 &buildrules(\%configfwdfw);
 130         }
 131         if (! -z  "${General::swroot}/firewall/input"){
 132                 &buildrules(\%configinputfw);
 133         }
 134         if (! -z  "${General::swroot}/firewall/outgoing"){
 135                 &buildrules(\%configoutgoingfw);
 136         }
 137 }
 138 sub buildrules
 139 {
 140         my $hash=shift;
 141         my $STAG;
 142         my $natip;
 143         my $snatport;
 144         my $fireport;
 145         my $nat;
 146         my $fwaccessdport;
 147         my $natchain;
 148         my $icmptype;
 149         foreach my $key (sort {$a <=> $b} keys %$hash){
 150                 next if (($$hash{$key}[6] eq 'RED' || $$hash{$key}[6] eq 'RED1') && $conexists eq 'off' );
 151                 $command="iptables --wait -A";
 152                 if ($$hash{$key}[28] eq 'ON'){
 153                         $command='iptables --wait -t nat -A';
 154                         $natip=&get_nat_ip($$hash{$key}[29],$$hash{$key}[31]);
 155                         if($$hash{$key}[31] eq 'dnat'){
 156                                 $nat='DNAT';
 157                                 if ($$hash{$key}[30] =~ /\|/){
 158                                         $$hash{$key}[30]=~ tr/|/,/;
 159                                         $fireport='-m multiport --dport '.$$hash{$key}[30];
 160                                 }else{
 161                                         $fireport='--dport '.$$hash{$key}[30] if ($$hash{$key}[30]>0);
 162                                 }
 163                         }else{
 164                                 $nat='SNAT';
 165                         }
 166                 }
 167                 $STAG='';
 168                 if($$hash{$key}[2] eq 'ON'){
 169                         #get source ip's
 170                         if ($$hash{$key}[3] eq 'cust_grp_src'){
 171                                 foreach my $grp (sort {$a <=> $b} keys %customgrp){
 172                                                 if($customgrp{$grp}[0] eq $$hash{$key}[4]){
 173                                                 &get_address($customgrp{$grp}[3],$customgrp{$grp}[2],"src");
 174                                         }
 175                                 }
 176                         }else{
 177                                 &get_address($$hash{$key}[3],$$hash{$key}[4],"src");
 178                         }
 179                         #get target ip's
 180                         if ($$hash{$key}[5] eq 'cust_grp_tgt'){
 181                                 foreach my $grp (sort {$a <=> $b} keys %customgrp){
 182                                         if($customgrp{$grp}[0] eq $$hash{$key}[6]){
 183                                                 &get_address($customgrp{$grp}[3],$customgrp{$grp}[2],"tgt");
 184                                         }
 185                                 }
 186                         }elsif($$hash{$key}[5] eq 'ipfire' ){
 187                                 if($$hash{$key}[6] eq 'GREEN'){
 188                                         $targethash{$key}[0]=$defaultNetworks{'GREEN_ADDRESS'};
 189                                 }
 190                                 if($$hash{$key}[6] eq 'BLUE'){
 191                                         $targethash{$key}[0]=$defaultNetworks{'BLUE_ADDRESS'};
 192                                 }
 193                                 if($$hash{$key}[6] eq 'ORANGE'){
 194                                         $targethash{$key}[0]=$defaultNetworks{'ORANGE_ADDRESS'};
 195                                 }
 196                                 if($$hash{$key}[6] eq 'ALL'){
 197                                         $targethash{$key}[0]='0.0.0.0/0';
 198                                 }
 199                                 if($$hash{$key}[6] eq 'RED' || $$hash{$key}[6] eq 'RED1'){
 200                                         open(FILE, "/var/ipfire/red/local-ipaddress")or die "Couldn't open local-ipaddress";
 201                                         $targethash{$key}[0]= <FILE>;
 202                                         close(FILE);
 203                                 }else{
 204                                         foreach my $alias (sort keys %aliases){
 205                                                 if ($$hash{$key}[6] eq $alias){
 206                                                         $targethash{$key}[0]=$aliases{$alias}{'IPT'};
 207                                                 }
 208                                         }
 209                                 }
 210                         }else{
 211                                 &get_address($$hash{$key}[5],$$hash{$key}[6],"tgt");
 212                         }
 213                         ##get source prot and port
 214                         $SRC_TGT='SRC';
 215                         $SPORT = &get_port($hash,$key);
 216                         $SRC_TGT='';
 217
 218                         ##get target prot and port
 219                         $DPROT=&get_prot($hash,$key);
 220
 221                         if ($DPROT eq ''){$DPROT=' ';}
 222                         @DPROT=split(",",$DPROT);
 223
 224                         #get time if defined
 225                         if($$hash{$key}[18] eq 'ON'){
 226                                 my ($time1,$time2,$daylight);
 227                                 my $daylight=$$hash{$key}[28];
 228                                 $time1=&get_time($$hash{$key}[26],$daylight);
 229                                 $time2=&get_time($$hash{$key}[27],$daylight);
 230                                 if($$hash{$key}[19] ne ''){push (@timeframe,"Mon");}
 231                                 if($$hash{$key}[20] ne ''){push (@timeframe,"Tue");}
 232                                 if($$hash{$key}[21] ne ''){push (@timeframe,"Wed");}
 233                                 if($$hash{$key}[22] ne ''){push (@timeframe,"Thu");}
 234                                 if($$hash{$key}[23] ne ''){push (@timeframe,"Fri");}
 235                                 if($$hash{$key}[24] ne ''){push (@timeframe,"Sat");}
 236                                 if($$hash{$key}[25] ne ''){push (@timeframe,"Sun");}
 237                                 $TIME=join(",",@timeframe);
 238
 239                                 $TIMEFROM="--timestart $time1 ";
 240                                 $TIMETILL="--timestop $time2 ";
 241                                 $TIME="-m time --weekdays $TIME $TIMEFROM $TIMETILL";
 242                         }
 243                         foreach my $DPROT (@DPROT){
 244                                 $DPORT = &get_port($hash,$key,$DPROT);
 245                                 $PROT=$DPROT;
 246                                 $PROT="-p $PROT" if ($PROT ne '' && $PROT ne ' ');
 247                                 if ($DPROT ne 'TCP' && $DPROT ne'UDP' && $DPROT ne 'ICMP' ){
 248                                         $DPORT='';
 249                                 }
 250                                 foreach my $a (sort keys %sourcehash){
 251                                         foreach my $b (sort keys %targethash){
 252                                                 if(! $sourcehash{$a}[0] || ! $targethash{$b}[0] || ($natip eq '-d ' && $$hash{$key}[28] eq 'ON') || (!$natip && $$hash{$key}[28] eq 'ON')){
 253                                                         #Skip rules when no RED IP is set (DHCP,DSL)
 254                                                         next;
 255                                                 }
 256                                                 next if ($targethash{$b}[0] eq 'none');
 257                                                 $STAG='';
 258                                                 if ($sourcehash{$a}[0] ne $targethash{$b}[0] && $targethash{$b}[0] ne 'none' || $sourcehash{$a}[0] eq '0.0.0.0/0.0.0.0'){
 259                                                         if($DPROT ne ''){
 260                                                                 if(substr($sourcehash{$a}[0], 3, 3) ne 'mac' && $sourcehash{$a}[0] ne ''){ $STAG="-s";}
 261                                                                 #Process ICMP RULE
 262                                                                 if(substr($DPORT, 2, 4) eq 'icmp'){
 263                                                                         my @icmprule= split(",",substr($DPORT, 12,));
 264                                                                         foreach (@icmprule){
 265                                                                                 $icmptype="--icmp-type ";
 266                                                                                 if ($_ eq "BLANK") {
 267                                                                                                 $icmptype="";
 268                                                                                                 $_="";
 269                                                                                 }
 270                                                                                 if ($$hash{$key}[17] eq 'ON'){
 271                                                                                         system ("$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $icmptype $_ $TIME -j LOG");
 272                                                                                 }
 273                                                                                         system ("$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $icmptype $_ $TIME -j $$hash{$key}[0]");
 274                                                                         }
 275                                                                 #PROCESS DNAT RULE (Portforward)
 276                                                                 }elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat'){
 277                                                                         $natchain='NAT_DESTINATION';
 278                                                                         if ($$hash{$key}[17] eq 'ON'){
 279                                                                                 system "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j LOG --log-prefix 'DNAT' \n";
 280                                                                         }
 281                                                                         my ($ip,$sub) =split("/",$targethash{$b}[0]);
 282                                                                         #Process NAT with servicegroup used
 283                                                                         if ($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'dnat' && $$hash{$key}[14] eq 'cust_srvgrp'){
 284                                                                                 system "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j $nat --to-destination $ip $DPORT\n";
 285                                                                                 $fwaccessdport=$DPORT;
 286                                                                         }else{
 287                                                                                 system "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT $natip $fireport $TIME -j $nat --to-destination $ip$DPORT\n";
 288                                                                                 $DPORT =~ s/\-/:/g;
 289                                                                                 if ($DPORT){
 290                                                                                         $fwaccessdport="--dport ".substr($DPORT,1,);
 291                                                                                 }elsif(! $DPORT && $$hash{$key}[30] ne ''){
 292                                                                                         if ($$hash{$key}[30]=~m/|/i){
 293                                                                                                 $$hash{$key}[30] =~ s/\|/,/g;
 294                                                                                                 $fwaccessdport="-m multiport --dport $$hash{$key}[30]";
 295                                                                                         }else{
 296                                                                                                 $fwaccessdport="--dport $$hash{$key}[30]";
 297                                                                                         }
 298                                                                                 }
 299                                                                         }
 300                                                                         system "iptables --wait -A FORWARDFW $PROT $STAG $sourcehash{$a}[0] -d $ip $fwaccessdport $TIME -j $$hash{$key}[0]\n";
 301                                                                         next;
 302                                                                 #PROCESS SNAT RULE
 303                                                                 }elsif($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'snat'){
 304                                                                         $natchain='NAT_SOURCE';
 305                                                                         if ($$hash{$key}[17] eq 'ON' ){
 306                                                                                 system "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG --log-prefix 'SNAT' \n";
 307                                                                         }
 308                                                                         system "$command $natchain $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $nat --to-source $natip\n";
 309                                                                 }
 310                                                                 #PROCESS EVERY OTHER RULE (If NOT ICMP, else the rule would be applied double)
 311                                                                 if ($PROT ne '-p ICMP'){
 312                                                                         if ($$hash{$key}[17] eq 'ON' && $$hash{$key}[28] ne 'ON'){
 313                                                                                 system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n";
 314                                                                         }
 315                                                                         system "iptables --wait -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
 316                                                                 }
 317                                                                 #PROCESS Prot ICMP and type = All ICMP-Types
 318                                                                 if ($PROT eq '-p ICMP' && $$hash{$key}[9] eq 'All ICMP-Types'){
 319                                                                         if ($$hash{$key}[17] eq 'ON' && $$hash{$key}[28] ne 'ON'){
 320                                                                                 system "$command $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j LOG\n";
 321                                                                         }
 322                                                                         system "iptables --wait -A $$hash{$key}[1] $PROT $STAG $sourcehash{$a}[0] $SPORT -d $targethash{$b}[0] $DPORT $TIME -j $$hash{$key}[0]\n";
 323                                                                 }
 324                                                         }
 325                                                 }
 326                                         }
 327                                 }
 328                         }
 329                 }
 330                 %sourcehash=();
 331                 %targethash=();
 332                 undef $TIME;
 333                 undef $TIMEFROM;
 334                 undef $TIMETILL;
 335                 undef $fireport;
 336         }
 337 }
 338 sub get_nat_ip
 339 {
 340         my $val=shift;
 341         my $type=shift;
 342         my $result;
 343         if($val eq 'RED' || $val eq 'GREEN' || $val eq 'ORANGE' || $val eq 'BLUE'){
 344                 $result=$defaultNetworks{$val.'_ADDRESS'};
 345         }elsif($val eq 'ALL'){
 346                 $result='-i '.$con;
 347         }elsif($val eq 'Default IP' && $type eq 'dnat'){
 348                 $result='-d '.$redip;
 349         }elsif($val eq 'Default IP' && $type eq 'snat'){
 350                 $result=$redip;
 351         }else{
 352                 foreach my $al (sort keys %aliases){
 353                         if($val eq $al && $type eq 'dnat'){
 354                                 $result='-d '.$aliases{$al}{'IPT'};
 355                         }elsif($val eq $al && $type eq 'snat'){
 356                                 $result=$aliases{$al}{'IPT'};
 357                         }
 358                 }
 359         }
 360         return $result;
 361 }
 362 sub get_time
 363 {
 364         my $val=shift;
 365         my $val1=shift;
 366         my $time;
 367         my $minutes;
 368         my $ruletime;
 369         $minutes = &utcmin($val);
 370         $ruletime = $minutes + &time_get_utc($val);
 371         if ($ruletime < 0){$ruletime +=1440;}
 372         if ($ruletime > 1440){$ruletime -=1440;}
 373         $time=sprintf "%02d:%02d", $ruletime / 60, $ruletime % 60;
 374         return $time;
 375 }
 376 sub time_get_utc
 377 {
 378         # Calculates the UTCtime from a given time
 379         my $val=shift;
 380         my @localtime=localtime(time);
 381         my @gmtime=gmtime(time);
 382         my $diff = ($gmtime[2]*60+$gmtime[1]%60)-($localtime[2]*60+$localtime[1]%60);
 383         return $diff;
 384 }
 385 sub utcmin
 386 {
 387         my $ruletime=shift;
 388         my ($hrs,$min) = split(":",$ruletime);
 389         my $newtime = $hrs*60+$min;
 390         return $newtime;
 391 }
 392 sub p2pblock
 393 {
 394         my $P2PSTRING;
 395         my $DO;
 396         open( FILE, "< $p2pfile" ) or die "Unable to read $p2pfile";
 397         @p2ps = <FILE>;
 398         close FILE;
 399         my $CMD = "-m ipp2p";
 400         foreach my $p2pentry (sort @p2ps) {
 401                 my @p2pline = split( /\;/, $p2pentry );
 402                 if ( $fwdfwsettings{'POLICY'} eq 'MODE1' ) {
 403                         $DO = "ACCEPT";
 404                         if ("$p2pline[2]" eq "on") {
 405                                 $P2PSTRING = "$P2PSTRING --$p2pline[1]";
 406                         }
 407                 }else {
 408                         $DO = "RETURN";
 409                         if ("$p2pline[2]" eq "off") {
 410                                 $P2PSTRING = "$P2PSTRING --$p2pline[1]";
 411                         }
 412                 }
 413         }
 414         if ($MODE eq 1){
 415                 if($P2PSTRING){
 416                         print"/sbin/iptables --wait -A FORWARDFW $CMD $P2PSTRING -j $DO\n";
 417                 }
 418         }else{
 419                 if($P2PSTRING){
 420                         system("/sbin/iptables --wait -A FORWARDFW $CMD $P2PSTRING -j $DO");
 421                 }
 422         }
 423 }
 424 sub get_address
 425 {
 426         my $base=shift; #source of checking ($configfwdfw{$key}[x] or groupkey
 427         my $base2=shift;
 428         my $type=shift; #src or tgt
 429         my $hash;
 430         if ($type eq 'src'){
 431                 $hash=\%sourcehash;
 432         }else{
 433                 $hash=\%targethash;
 434         }
 435         my $key = &General::findhasharraykey($hash);
 436         if($base eq 'src_addr' || $base eq 'tgt_addr' ){
 437                 if (&General::validmac($base2)){
 438                         $$hash{$key}[0] = "-m mac --mac-source $base2";
 439                 }else{
 440                         $$hash{$key}[0] = $base2;
 441                 }
 442         }elsif($base eq 'std_net_src' || $base eq 'std_net_tgt' || $base eq 'Standard Network'){
 443                 $$hash{$key}[0]=&fwlib::get_std_net_ip($base2,$con);
 444         }elsif($base eq 'cust_net_src' || $base eq 'cust_net_tgt' || $base eq 'Custom Network'){
 445                 $$hash{$key}[0]=&fwlib::get_net_ip($base2);
 446         }elsif($base eq 'cust_host_src' || $base eq 'cust_host_tgt' || $base eq 'Custom Host'){
 447                 $$hash{$key}[0]=&fwlib::get_host_ip($base2,$type);
 448         }elsif($base eq 'ovpn_net_src' || $base eq 'ovpn_net_tgt' || $base eq 'OpenVPN static network'){
 449                 $$hash{$key}[0]=&fwlib::get_ovpn_net_ip($base2,1);
 450         }elsif($base eq 'ovpn_host_src' ||$base eq 'ovpn_host_tgt' || $base eq 'OpenVPN static host'){
 451                 $$hash{$key}[0]=&fwlib::get_ovpn_host_ip($base2,33);
 452         }elsif($base eq 'ovpn_n2n_src' ||$base eq 'ovpn_n2n_tgt' || $base eq 'OpenVPN N-2-N'){
 453                 $$hash{$key}[0]=&fwlib::get_ovpn_n2n_ip($base2,11);
 454         }elsif($base eq 'ipsec_net_src' || $base eq 'ipsec_net_tgt' || $base eq 'IpSec Network'){
 455                 $$hash{$key}[0]=&fwlib::get_ipsec_net_ip($base2,11);
 456         }elsif($base eq 'ipfire_src' ){
 457                 if($base2 eq 'GREEN'){
 458                         $$hash{$key}[0]=$defaultNetworks{'GREEN_ADDRESS'};
 459                 }
 460                 if($base2 eq 'BLUE'){
 461                         $$hash{$key}[0]=$defaultNetworks{'BLUE_ADDRESS'};
 462                 }
 463                 if($base2 eq 'ORANGE'){
 464                         $$hash{$key}[0]=$defaultNetworks{'ORANGE_ADDRESS'};
 465                 }
 466                 if($base2 eq 'ALL'){
 467                         $$hash{$key}[0]='0.0.0.0/0';
 468                 }
 469                 if($base2 eq 'RED' || $base2 eq 'RED1'){
 470                         open(FILE, "/var/ipfire/red/local-ipaddress");
 471                         $$hash{$key}[0]= <FILE>;
 472                         close(FILE);
 473                 }else{
 474                         foreach my $alias (sort keys %aliases){
 475                                 if ($base2 eq $alias){
 476                                         $$hash{$key}[0]=$aliases{$alias}{'IPT'};
 477                                 }
 478                         }
 479                 }
 480         }
 481 }
 482 sub get_prot
 483 {
 484         my $hash=shift;
 485         my $key=shift;
 486         #check AH,GRE,ESP or ICMP
 487         if ($$hash{$key}[7] ne 'ON' && $$hash{$key}[11] ne 'ON'){
 488                 return "$$hash{$key}[8]";
 489         }
 490         if ($$hash{$key}[7] eq 'ON' || $$hash{$key}[11] eq 'ON'){
 491                 #check if servicegroup or service
 492                 if($$hash{$key}[14] eq 'cust_srv'){
 493                         return &fwlib::get_srv_prot($$hash{$key}[15]);
 494                 }elsif($$hash{$key}[14] eq 'cust_srvgrp'){
 495                         return &fwlib::get_srvgrp_prot($$hash{$key}[15]);
 496                 }elsif (($$hash{$key}[10] ne '' || $$hash{$key}[15] ne '') && $$hash{$key}[8] eq ''){ #when ports are used and prot set to "all"
 497                         return "TCP,UDP";
 498                 }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"
 499                         return "$$hash{$key}[8]";
 500                 }elsif (($$hash{$key}[10] eq '' && $$hash{$key}[15] eq '') && $$hash{$key}[8] ne 'ICMP'){ #when ports are NOT used and prot NOT set to "ICMP"
 501                         return "$$hash{$key}[8]";
 502                 }else{
 503                         return "$$hash{$key}[8]";
 504                 }
 505         }
 506         #DNAT
 507         if ($SRC_TGT eq '' && $$hash{$key}[31] eq 'dnat' && $$hash{$key}[11] eq '' && $$hash{$key}[12] ne ''){
 508                 return "$$hash{$key}[8]";
 509         }
 510 }
 511 sub get_port
 512 {
 513         my $hash=shift;
 514         my $key=shift;
 515         my $prot=shift;
 516         #Get manual defined Ports from SOURCE
 517         if ($$hash{$key}[7] eq 'ON' && $SRC_TGT eq 'SRC'){
 518                 if ($$hash{$key}[10] ne ''){
 519                         $$hash{$key}[10] =~ s/\|/,/g;
 520                         if(index($$hash{$key}[10],",") > 0){
 521                                 return "-m multiport --sport $$hash{$key}[10] ";
 522                         }else{
 523                                 if($$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')  ){
 524                                         return "--sport $$hash{$key}[10] ";
 525                                 }else{
 526                                         return ":$$hash{$key}[10]";
 527                                 }
 528                         }
 529                 }
 530                 #Get manual ports from TARGET
 531         }elsif($$hash{$key}[11] eq 'ON' && $SRC_TGT eq ''){
 532                 if($$hash{$key}[14] eq 'TGT_PORT'){
 533                         if ($$hash{$key}[15] ne ''){
 534                                 $$hash{$key}[15] =~ s/\|/,/g;
 535                                 if(index($$hash{$key}[15],",") > 0){
 536                                         return "-m multiport --dport $$hash{$key}[15] ";
 537                                 }else{
 538                                         if($$hash{$key}[28] ne 'ON' || ($$hash{$key}[28] eq 'ON' && $$hash{$key}[31] eq 'snat') ){
 539                                                 return "--dport $$hash{$key}[15] ";
 540                                          }else{
 541                                                  $$hash{$key}[15] =~ s/\:/-/g;
 542                                                  return ":$$hash{$key}[15]";
 543                                          }
 544                                 }
 545                         }
 546                 #Get ports defined in custom Service (firewall-groups)
 547                 }elsif($$hash{$key}[14] eq 'cust_srv'){
 548                         if ($prot ne 'ICMP'){
 549                                 if($$hash{$key}[31] eq 'dnat' && $$hash{$key}[28] eq 'ON'){
 550                                         my $ports =&fwlib::get_srv_port($$hash{$key}[15],1,$prot);
 551                                         $ports =~ s/\:/-/g;
 552                                         return ":".$ports
 553                                 }else{
 554                                         return "--dport ".&fwlib::get_srv_port($$hash{$key}[15],1,$prot);
 555                                 }
 556                         }elsif($prot eq 'ICMP' && $$hash{$key}[11] eq 'ON'){        #When PROT is ICMP and "use targetport is checked, this is an icmp-service
 557                                 return "--icmp-type ".&fwlib::get_srv_port($$hash{$key}[15],3,$prot);
 558                         }
 559                 #Get ports from services which are used in custom servicegroups (firewall-groups)
 560                 }elsif($$hash{$key}[14] eq 'cust_srvgrp'){
 561                         if      ($prot ne 'ICMP'){
 562                                 return &fwlib::get_srvgrp_port($$hash{$key}[15],$prot);
 563                         }
 564                         elsif($prot eq 'ICMP'){
 565                                 return &fwlib::get_srvgrp_port($$hash{$key}[15],$prot);
 566                         }
 567                 }
 568         }
 569         #CHECK ICMP
 570         if ($$hash{$key}[7] ne 'ON' && $$hash{$key}[11] ne 'ON' && $SRC_TGT eq ''){
 571                 if($$hash{$key}[9] ne '' && $$hash{$key}[9] ne 'All ICMP-Types'){
 572                         return "--icmp-type $$hash{$key}[9] ";
 573                 }elsif($$hash{$key}[9] eq 'All ICMP-Types'){
 574                         return;
 575                 }
 576         }
 577 }