Re: Installing & Configuring snort

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

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Hello all

On 12/08/2012 20:56, Damien Hull wrote:
> OS: Ubuntu 10.04 server SNORT: 2.9.3.1 Instructions: The
> Ubuntu-10.04-LTS instructions on the snort.org website. Barnyard2:
> Installed and configured MySQL: Using this and it seems to work 
> Snort Rules: 2923
>
> Problem #1 The dynamic rules don't work for some reason. I
> commented out the "dynamicdetection" line to turn that off.

You've got version 2.9.3.1 with 2.9.2.3 ruleset so the SO rules will
not work.

> Problem #2 I'm not getting any alerts. I added sfportscan to
> snort.conf but I'm getting no action in the log file.

Is your unified file updating at all?

I'd suggest taking Barnyard2 out of the equation until you know your
sensor is hitting traffic -

snort -A console -u snort -g snort -c /etc/snort/snort.conf -i ethX

is very useful - also the example 'ICMP' rule in the snort.org HOWTO
is very handy to test you're actually seeing something.

- -- 
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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