Snort mailing list archives
RE: Snort sensor on a Firewall
From: Matt Kettler <mkettler () evi-inc com>
Date: Mon, 05 May 2003 15:53:08 -0400
At 07:19 PM 5/5/2003 +0100, sireesha gaddipati wrote:
Hi,I actually want to place snort sensor on the same machine as firewall. My firewall has two interfaces one of which is connected to internet and other to the internal network. If I place two snort sensors one on each of those interfaces will that work same as snort sensors before and after the firewall (before and after in the sense on separate linux boxes)
For snort it does not matter if it is on the same box or not. Snort will see whatever is on the wire of the interface it is listening to, no matter what is blocked by ipchains, iptables, ipf, etc. My snort box is configured with "block quick all" type rules on the interface it listens to and it works just fine.
However the "far" and "near" side arguments that Michael made are still valid to the extent that if you listen on the inside interface, obviously only traffic that got through the firewall will be present there. So you do still need to weigh which interface you configure snort to listen on.
------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ 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 sensor on a Firewall sireesha gaddipati (May 05)
- RE: Snort sensor on a Firewall Michael Steele (May 05)
- RE: Snort sensor on a Firewall sireesha gaddipati (May 05)
- RE: Snort sensor on a Firewall Rafeeq Rehman (May 05)
- RE: Snort sensor on a Firewall Matt Kettler (May 05)
- RE: Snort sensor on a Firewall Rafeeq Rehman (May 05)
- RE: Snort sensor on a Firewall sireesha gaddipati (May 05)
- RE: Snort sensor on a Firewall Michael Steele (May 05)