full-disclosure - [RE: Test scripts for NIDS]

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From: ThomasI.Pollet at UGent.be (Thomas Pollet)
Subject: [RE: Test scripts for NIDS]

> > I've gotten alot of suggestions to test the
> > signatures, i've got some to test the load but they
> > were $$$, anything out there for free ?
> >
> > With a software and not an appliance how does one test
> > the load to know when the IDS can no longer verify
> > packets and they are being dropped ? Is this included
> > in the software ?
> >

You can send random data with tools like iperf or tftp. and at the mean time
send some data through netcat. Depending on the preprocessor config (with
snort), you will notice the NIDS will start to drop packets. The same is
possible with fragmented packets(hping2): Send first fragment, wait some time
(e.g. 45 seconds) and send the second fragment.

greets,
Thomas