Snort mailing list archives
Re: Snort dont understand pf (openbsd) format
From: Matt Kettler <mkettler () evi-inc com>
Date: Mon, 29 Nov 2004 18:27:24 -0500
At 06:09 PM 11/29/2004, Breno Leitão wrote:
leitao@anthem:~/snort/snort-2.3.0RC1/src$ ./snort -c snort.conf -l /tmp -r ~/tmp/pflog.2
<snip>
What is wrong with that? Does snort understand the pf log format?
No, snort doesn't understand any textual log formats at all, including pf.The manpage is pretty clear about what kind of format -r expects. It expects a tcpdump format file.
It also doesn't expect a copy of tcpdump's text-mode output, it expects a tcpdump capture file generated with tcpdump -w. Such files are binary files, not text. They are more-or-less a capture of the packets in their raw format, just dumped to disk instead of in memory, so it's pretty easy for snort to parse.
Reconstructing a packet from an ascii mode logfile is a considerable feat, if it's even possible (not all log formats dump the entire packet contents, does PF?)
From the snort manpage: -r tcpdump-file Read the tcpdump-formatted file tcpdump-file. This will cause Snort to read and process the file fed to it. This is useful if, for instance, you've got a bunch of SHADOW files that you want to process for content, or even if you've got a bunch of reassembled packet fragments which have been writ- ten into a tcpdump formatted file. ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/ _______________________________________________ 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://www.geocrawler.com/redir-sf.php3?list=snort-users
Current thread:
- Snort dont understand pf (openbsd) format Breno Leitão (Nov 29)
- Re: Snort dont understand pf (openbsd) format Matt Kettler (Nov 29)
- Re: Snort dont understand pf (openbsd) format Matt Kettler (Nov 29)
- Re: Snort dont understand pf (openbsd) format Sean Brown (Nov 29)
- Re: Snort dont understand pf (openbsd) format Matt Kettler (Nov 29)
- Re: Snort dont understand pf (openbsd) format Sean Brown (Nov 29)
- Re: Snort dont understand pf (openbsd) format Matt Kettler (Nov 30)
- Re: Snort dont understand pf (openbsd) format Matt Kettler (Nov 30)
- Re: Snort dont understand pf (openbsd) format Christian Robottom Reis (Nov 30)
- Re: Snort dont understand pf (openbsd) format Sean Brown (Nov 30)
- Re: Snort dont understand pf (openbsd) format Christian Robottom Reis (Dec 01)
- Re: Snort dont understand pf (openbsd) format Jeremy Hewlett (Dec 01)
- Re: Snort dont understand pf (openbsd) format Matt Kettler (Nov 29)
- Re: Snort dont understand pf (openbsd) format Matt Kettler (Nov 29)