Snort mailing list archives
Re: Hub not a hub
From: Ryan Russell <ryan () securityfocus com>
Date: Tue, 5 Jun 2001 14:08:23 -0600 (MDT)
On Tue, 5 Jun 2001, Eric Budke wrote:
My impression (and I haven't written down brand names in the past) is that most of the 10/100 hubs do this minor bit of switching.
There must be a bridge between the two different speeds. These are usually two repeated segements with a 2 port bridge in-between. In order to keep the 100Mb side from swamping the 10Mb side, they are smart bridges, meaning they will do the MAC learning and filtering, so you wont' be able to monitor the traffic on one segment from the other.
I've blamed it on the 10/100ness of it. Most all 10M hubs I've used do the bridging. And I don't have anything straight 100M which I would assume would bridge as well.
You can find straight 10 or 100 repeaters, they're just less common now. Anything that mixes the two, or is labelled "switch" will have a bridging feature which will interfere with Snort monitoring to some degree. Ryan _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: http://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users
Current thread:
- Hub not a hub Eric Budke (Jun 05)
- Re: Hub not a hub Ryan Russell (Jun 05)
- Re: Hub not a hub Mike Johnson (Jun 05)
- <Possible follow-ups>
- RE: Hub not a hub Mayers, Philip J (Jun 06)
- Is there a complete PORT list online? ®}§ÓµØ (Jun 06)
- Re: Hub not a hub Ryan Russell (Jun 05)