[Script] Perl – Check Point firewall logfile analysis – rule usage

Continuing from my previous post, here’s another quick and dirty perl script I used some time ago to provide a basic analysis of Check Point firewall logfiles in terms of rule usage.

It kind of lost the the bit of usefulness it had with the rule base hit counter that was introduced in R75.40, but maybe someone can still make use of this horrible code. Or some better examples like this to begin with.
The script here also includes info on implicit rules, address spoofing, whacky ICMP packets or basically any stuff that isn’t logged with an actual rule name.

Again this script will obviously only be able to gather statistics of firewall rules you’ve actually set to logging.

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[Script] Perl – Check Point firewall logfile analysis – dropped connections statistics

Here’s a simple perl script I wrote some time ago in order to analyze Check Point firewall logs for dropped connections, outputting a simple statistic by drops per source-IP. It also displays the number of accepted connections per source-IP.

You first need to convert the Check Point binary logs to text logfiles via fwm logexport like:
fwm logexport -n -p -i $FWDIR/log/2013-07-28_000000.log -o /var/tmp/2013-07-28.txt
Always use the -n switch btw or you can grab quite a few snickers waiting for DNS reverse resolutions in large logfiles. If you’re running this directly on a check point SPLAT or Gaia node, make sure you have enough space on the destination volume since the exported text logs can be quite large (use /var/tmp instead of /tmp)

Of course this script will only be able to gather statistics of firewall rules you’ve actually set to logging.

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