Note, your code as stated above, does not compile.

You did not state the format of the log file, so I created my own :) Here is code to do roughly what you want: 

my @trojan_ports = (113, 15118, 4899);
my %trojan;
@trojan{@trojan_ports} = 1;

my @win_ports = (135, 137, 139, 445, 1025, 1433, 1434);
my %win;
@win{@win_ports} = 1;

my %port_ip;

while (<DATA>) {
   chomp;
   my ($ip, $port) = split m"/";
   push @{ $port_ip{$port} }, $ip;
}

foreach my $port (sort {$a <=> $b} keys %port_ip) {
   if (exists $win{$port}) {
      print "Windows port $port\n";
   }
   elsif (exists $trojan{$port}) {
      print "Trojan port $port\n";
   }
   else {
      print "Unknown port $port\n";
   }
   print "   $_\n" foreach @{ $port_ip{$port} };
}


__DATA__
1.2.3.4/135
1.2.3.5/135
1.2.3.6/135
1.2.3.4/137
1.2.3.7/137
1.2.3.9/113
1.2.3.10/111

[download]

-Mark

In reply to Re: Firewall Log Analysis - port matrices by kvale
in thread Firewall Log Analysis - port matrices by monger

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