Snort mailing list archives
BPF filter syntax
From: Eric G <eric () nixwizard net>
Date: Thu, 28 Feb 2013 19:48:15 -0500
After lurking on this list for many moons and occasionally reply to some questions and threads I finally have my own question to post. I have a particular sensor whose CPU keeps spiking out at 1am. I'm trying to write a BPF filter to filter out the backup traffic, on tcp port 13724. Honestly it's not a big deal if the BPF filter matches on other traffic that happens to use that port (as a source port for example), I'm really just trying to finally solve this problem first and tune the filter later. Is !(port 13724) the correct syntax for the filter? Should I match on a NOT or match on the traffic I'm trying to filter out? Thanks guys, Eric
------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb
_______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://sourceforge.net/mailarchive/forum.php?forum_name=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news!
Current thread:
- BPF filter syntax Eric G (Feb 28)
- Re: BPF filter syntax Joel Esler (Mar 01)