Snort mailing list archives
Who can explain this?where is the bottleneck?
From: "rocky" <rocky_maja () hotmail com>
Date: Fri, 16 May 2003 23:15:41 +0800
I did some simple tests on snort on-line detection capacity yesterday. I check a tcpdump data with only 37 kinds of attacks.First, I turn off all useless precessors, indeed only frag2 and telnet remain opening.Snort2.0 check this data "off-line" with only 37 rules. There find about 7700 events in about 5 seconds. Then I inject the tcpdump data by tcpreplay from my traffic producer and detect the traffic on my sensor. Here are the detected events with different traffic rates: 150M 3522 100M 3791 80M 3851 50M 3941 20M 4163 10M 4271 I can not understand why snort can not find most events even in very low speed. I think it may be problem of my machines. My traffic producer is Intel 1.4G, 256RAM, Redhat 9.0, E1000 NIC. My snort sensor is Intel 2.4G, 512RAM, Redhat 9.0, E1000 NIC. Where is the bottleneck? How can I to detect all the events on-line? Thanks very much.
Current thread:
- Who can explain this?where is the bottleneck? rocky (May 16)
- Re: Who can explain this?where is the bottleneck? Edin Dizdarevic (May 16)
- <Possible follow-ups>
- RE: Who can explain this?where is the bottleneck? Ricardo, Gerson (May 16)