Re: [Snort-users] ClamAV preprocessor

Hi Jason,

On Tuesday 24 August 2004 02:53, Jason Haar wrote:
> On Tue, Aug 17, 2004 at 11:09:14PM -0500, William Metcalf wrote:
> > I know that some of folks don't think that doing virus detection with
> > and IDS is a good idea, but Victor Julien and I have developed a
> > preprocessor that can detect virus activity in network traffic, using a
> > clamav c function and the clamav virus database. On to the preproc, you
> > can enable
>
> Wow - freaky!

:-)

>
> Have you got any stats on how such a preprocessor affects Snort?
>
> e.g. how much more CPU/memory load, FP rates, etc.
>

No, although with no hard data i can say the load seems to be ok.

> As far as FP rates go, I mean as it's "just" an AV preprocessor (now
> there's an understatement!), I assume it isn't also a SMB preprocessor - so
> it isn't translating raw network data back into files before letting ClamAV
> loose on it

You are correct.

> - so the chances for FP must be higher due to that.

Well, maybe you are right, but i'm running it for a few weeks now, and haven't
seen any fp. But this is one thing we need to find out by heavy testing :-).

Regards,
Victor


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