Snort mailing list archives
Re: Snort on multiple interfaces
From: "Alex Butcher, ISC/ISYS" <Alex.Butcher () bristol ac uk>
Date: Thu, 04 Nov 2004 08:58:46 +0000
--On 03 November 2004 18:38 +0200 "Jeffries, Michael MJ" <Michael.Jeffries () standardbank co za> wrote:
I have a box with 3 interfaces pointing at different networks, I am running fedora 9.2. How can I get snort to sniff on more than one interface? Do I just start two sessions of snort up as follows ? snort -c /etc/snort/snort.conf -i eth0 & snort -c /etc/snort/snort.conf -i eth1 &
That's one, perfectly acceptable, way.
Or is there a better way to do this?
A different approach (which may be "better" depending on what you're trying to achieve) is to bond together the physical interfaces to a single interface, and have one instance of Snort sniffing from that. The advantage of doing this is that snort can track state across multiple segments. The (possible) disadvantage is that you can only use one policy per bond interface (i.e. one per instance of Snort).
<http://www.redhat.com/archives/redhat-install-list/2003-July/msg00665.html> gives a bit more detail on setting up bonding with RH-like OSs such as Fedora. Note that you probably don't want to bind an IP address to bond0 (or whatever) if you're using it for Snort.
Thanks a ton Mike
Best Regards, Alex. -- Alex Butcher: Security & Integrity, Personal Computer Systems Group Information Systems and Computing GPG Key ID: F9B27DC9 GPG Fingerprint: D62A DD83 A0B8 D174 49C4 2849 832D 6C72 F9B2 7DC9 ------------------------------------------------------- This SF.Net email is sponsored by: Sybase ASE Linux Express Edition - download now for FREE LinuxWorld Reader's Choice Award Winner for best database on Linux. http://ads.osdn.com/?ad_id=5588&alloc_id=12065&op=click _______________________________________________ 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 on multiple interfaces Jeffries, Michael MJ (Nov 03)
- Re: Snort on multiple interfaces Nick Hatch (Nov 03)
- Re: Snort on multiple interfaces Alex Butcher, ISC/ISYS (Nov 04)
- Re: Snort on multiple interfaces Jose Maria Lopez (Nov 06)