RE: Test scripts for NIDS

From: Bénoni MARTIN (Benoni.MARTIN@libertis.ga)
Date: Wed Sep 01 2004 - 05:43:35 EDT


There is a Windoze tool called RafaleX (was named after in Engage Packet Builder, if I am right), free, which allows to forge TCP/UDP/ICMP traffic via a very nice GUI.

I think you can also tell him how many packets you want to send ...

-----Message d'origine-----
De : cruxpot [mailto:cruxpot@runbox.com]
Envoyé : mardi 31 août 2004 15:40
À : John Madden; pen-test@securityfocus.com
Objet : Re: Test scripts for NIDS

> I'm looking for tools that can test the effectiveness of an NIDS like:

> - How much load can it take before dropping packets ?

You need a traffic generator. The best layer 4-7 generator available, in my opinion, is Spirent Avalanche/Reflector. But it's expensive. I'd like to hear if someone has actually used a good non-commercial or cheaper solution to do this where real stateful traffic is created rather than dummy packets for load testing purposes. I still hold the opinion that this tool is required to perform a proper load/stress test because nothing comes close to its power and application protocol support.

> - What attacks can it detect or not detect

Use exploit toolkits like Metasploit or CANVAS or compile your own which are available from the Internet. Alternatively, there are attack replay tools like Blade IDS Informer or you can use the tcpreplay tool to replay pcap files.

Refer to http://osec.neohapsis.com/ and
http://www.nss.co.uk/Articles_wpapers.htm for more ideas on testing NIDS.
There are many variations you can perform for testing NIDS effectiveness while it is under load from different sorts of traffic.

+crux

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Ethical Hacking at the InfoSec Institute. All of our class sizes are
guaranteed to be 12 students or less to facilitate one-on-one interaction
with one of our expert instructors. Check out our Advanced Hacking course,
learn to write exploits and attack security infrastructure. Attend a course
taught by an expert instructor with years of in-the-field pen testing
experience in our state of the art hacking lab. Master the skills of an
Ethical Hacker to better assess the security of your organization.

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