John Hinton webmaster@ew3d.com wrote:

...

I did look at snort and actually some people run both snort and OSSEC. I don't remember the reasons. <<

Simply put, they're different things. Snort is a network IDS which examines network traffic packets, looking for the signatures of various attacks. OSSEC is host IDS which monitors logs for evidence of attacks or misuse on a host OS. In many installations, you need them both.

Best,

--- Les Bell, RHCE, CISSP [http://www.lesbell.com.au] Tel: +61 2 9451 1144 FreeWorldDialup: 800909