Re: Snort not generating alerts

[Peter Bates <peter.bates () ucl ac uk>]

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Hello all

On 10/07/2012 14:09, Pratik Narang wrote:
> Have you looked whether the unified2 file, 'snort.u2' in your 
> configuration contains any alerts or data using u2spewfoo?
>
> > Yes the log files do contain data (alerts?- can't see any...)

What does something like this show:

u2spewfoo snort.u2.1341924701 |grep sig

You should see something along the lines of:


        sig id: 3000035 gen id: 1       revision: 1
classification: 33
        sig id: 2013068 gen id: 1       revision: 2
classification: 28
        sig id: 23250   gen id: 1       revision: 1
classification: 21

The actual signatures you're hitting on.

> > I tried this umpteen times... even re-installing Barnyard2... 
> > Barnyard2.waldo must be empty to begin with (right?) since I am
> > only creating the file. Then, why should it contain rubbish??

Barnyard should create the file initially - if I was testing and
having problems I would

a) stop snort
b) stop barnyard2
c) delete (or move) files out of your LOGDIR
d) start snort
e) start barnyard2

You could also run barnyard2 in the foreground with -v but I seem to
recall that doesn't show a great deal.

- -- 
Peter Bates
Senior Computer Security Officer    Phone: +44(0)2076792049
Information Services Division       Internal Ext: 32049
University College London
London WC1E 6BT


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