Re: RE: Snort-users digest, Vol 1 #3309 - 9 msgs

[Erek Adams <erek () snort org>]

On Fri, 27 Jun 2003, Christian Tortorich wrote:

[...snip...]

> 1) When snort reports that packets are dropped, should I take that to
> mean that they are dropped on the floor or just that Snort couldt look
> at them fast enough so it skipped them? I want to montior traffic, but
> not at the expense of packet loss.

Dropped as in dropped on the floor.  I'm assuming you're using a Linux
based system from your use of iptables.  If you are, be sure and have a
look at Phil Wood's libpcap magic [0].  It's made quite a bit of
difference for some folks.

> 2)I have a LAN on one side of this box with about 100 clients and a
> connection to a gig E backbone on the other side. Is my snort box
> configuration reasonable? Should I be droppping packets consistently?

Depends on how much traffic is generated.  Since you're looking at 'all'
traffic, you're using more CPU, RAM, I/O, etc...  Try just looking at your
incoming stuff and see if you drop packets.

And please don't reply with the entire digest next time.  :)

Cheers!

-----
Erek Adams

   "When things get weird, the weird turn pro."   H.S. Thompson

[0]     http://public.lanl.gov/cpw/


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