[Snort-users] tcpdump script

Jason Brvenik jasonb at ...1935...
Tue Apr 7 19:28:31 EDT 2009

You might want to check out daemonlogger instead. It is more
specifically designed for that purpose.


On Tue, Apr 7, 2009 at 7:07 PM, Jefferson, Shawn
<Shawn.Jefferson at ...14448...> wrote:
> Hi,
> I wanted to run tcpdump to capture all traffic on my snort sensor, so that
> if I want to go take a look at traffic based on snort alerts I could get
> more context.  I’ve setup a couple of scripts to gzip the packet captures
> and send them to a storage server.  My question is about starting tcpdump
> itself.  I tried doing it in the same script that starts snort and barnyard,
> but this didn’t seem to work and I think it’s due to the fact that tcpdump
> needs to be run as root (?).
> So, I’ve created a root cron job that runs every five minutes will start
> tcpdump if it finds it not running (using “pidof tcpdump”).
> Not being a linux guru, is this the right way to approach this problem?
> Thanks,
> Shawn
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