POE::Filter::Snort - a POE stream filter that parses Snort logs into hashes
#!/usr/bin/env perl use warnings; use strict; use POE qw(Filter::Snort Wheel::FollowTail); POE::Session->create( inline_states => { _start => \&start_log, got_rec => \&display_record, }, ); POE::Kernel->run(); exit; sub start_log { $_[HEAP]->{watcher} = POE::Wheel::FollowTail->new( Filename => "/var/log/snort/alert", Filter => POE::Filter::Snort->new(), InputEvent => "got_rec", ); } sub display_record { my $rec = $_[ARG0]; print "Got a snort record:\n"; print "\tComment: $rec->{comment}\n" if exists $rec->{comment}; print "\tClass : $rec->{class}\n" if exists $rec->{class}; print "\tPrio : $rec->{priority}\n" if exists $rec->{priority}; if (exists $rec->{src_ip}) { if (exists $rec->{src_port}) { print "\tSource : $rec->{src_ip} $rec->{src_port}\n"; print "\tDest : $rec->{dst_ip} $rec->{dst_port}\n"; } else { print "\tSource : $rec->{src_ip}\n"; print "\tDest : $rec->{dst_ip}\n"; } foreach my $xref (@{$rec->{xref}}) { print "\tXref : $xref\n"; } } }
POE::Filter::Snort parses streams containing Snort alerts. Each alert is returned as a hash containing the following fields: comment, class, priority, src_ip, dst_ip, src_port, dst_port, xref, raw.
Most fields are optional. For example, some snort alerts don't contain a source and destination IP address. Those that do aren't always accompanied by a source and destination port.
The xref field refers to an array of URLs describing the alert in more detail. It will always exist, but it may be empty if no URLs appear in snort's configuration file.
The raw field is an arrayref containing each original line of the snort alert.
Snort - "the de facto standard for intrusion detection/prevention" http://www.snort.org/
POE
https://rt.cpan.org/Dist/Display.html?Status=Active&Queue=POE-Filter-Snort
http://github.com/rcaputo/poe-filter-snort http://gitorious.org/poe-filter-snort
http://search.cpan.org/dist/POE-Filter-Snort/
Copyright 2005-2010, Rocco Caputo. All rights are reserved.
POE::Filter::Snort is free software; you may use, redistribute, and/or modify it under the same terms as Perl itself.
To install POE::Filter::Snort, copy and paste the appropriate command in to your terminal.
cpanm
cpanm POE::Filter::Snort
CPAN shell
perl -MCPAN -e shell install POE::Filter::Snort
For more information on module installation, please visit the detailed CPAN module installation guide.