Snort mailing list archives
Snort & multi-port ethernet cards -- PART II
From: Tom Sevy <tsevy () epx com>
Date: Fri, 21 Jun 2002 12:16:42 -0400
Thanks very much to Eric, Sandro, Keith, and Vjay for their responses. +++++++++++++++++++++++++++++++++++++++++++++ I've checked the logs, etc. The three i/faces that are active on the quad card do see traffic, but not all the traffic. For example, I am snorting two internal segments. When an alert is generated for an event that happens in segment 1 (on eth1), and the other end of that event is in segment 3 (on eth3), both sensors should report the event. This happens sometimes and at times is does not. I have one instance of this event firing where it is seen by both sensors, and then I have one that was seen only by one of the sensors. Same src/dst IP in both cases. The event in question is "ATTACK RESPONSES id check returned root" when a Unix admin in seg 1 connects to a Unix server in seg 3. Again, running on RH 7.3, Compaq Proliant 1600, 2 x PIII 500, 512m ram.... Decent box. And also, on eth 1 & on eth 3, I have a filter set on the snort command line: eth1 not (src net seg1 and dst net seg1) # ignore traffic that is local to this segment eth3 not (src net seg3 and dst net seg3) # ignore traffic that is local to this segment So as to pick up only traffic that is from/to a different segment.... I am running snort 1.8.6 bld 105... [eth1, eth3] are in home_net +++++++++++++++++++++++++ # snort -V -*> Snort! <*- Version 1.8.6 (Build 105) By Martin Roesch (roesch () sourcefire com, www.snort.org) ------------------------------------------------------- Sponsored by: ThinkGeek at http://www.ThinkGeek.com/ _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users
Current thread:
- Snort & multi-port ethernet cards -- PART II Tom Sevy (Jun 21)