[Snort-users] multiple files off of stdin?

Phil Wood cpw at ...440...
Sat Apr 19 09:42:03 EDT 2003

I cannot think of any reason to run snort just once.  Why not:

ls *.pcap | while read f; do
  snort -r $f ... other args

I've done this on many occasion (using mysql/acid) to populate an acid
web page.

On Sat, Apr 19, 2003 at 10:54:24AM -0400, Michael L. Artz wrote:
> Don't know if the last message got through, sorry if this is a dup ...
> Anyway, is there a way to have snort process multiple files off of 
> stdin?  I.e.
> cat file1.pcap file2.pcap | snort -r - <other args>
> fails just before processing file2 with the error: "pcap_loop: 
> truncated dump file", which I assume has to do with the little header 
> that libpcap formatted files have at the beginning.  I can mergecap the 
> files and run them through fine, it is only when I try and run multiple 
> pcap files through, in a fashion such as:
> (for i in *.cap.gz| do gzip -dc $i; done) | snort -r -  <args>
> which I can't easily mergecap because of space issues.  Plus, I have the 
> files spread across multiple DVDs and would like to have a little script 
> that creates a snort pipe and then pumps pcap files to it, which could 
> be written so that snort (and all session and reassembly information) 
> survives a change of dvd.
> Thanks
> -Mike
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