IDS mailing list archives

Re: Sniffing split connections


From: Tony Carter <tcarter () entrusion com>
Date: Thu, 14 Apr 2005 00:44:43 -0400

On Monday 11 April 2005 12:37 pm, Chris Mills wrote:
Hi all-

Here's the problem I'm having:

I have a client site that has two physical connections from its ATM
switch that connect to two different providers. The ATM switch uses
both connections all the time (not set up as a failover.) The ATM
switch at the site will not let me mirror the ports so I can't sniff
there... and after the two providers, the connection is too fast for
my equipment. I am using Snort 2.3.2 on PowerEdge 1750's. If I place a
sniffer at both provider A and provider B, is there a way I can
reassemble the traffic so I can see complete sessions? The two
providers are on different sides of town.

Chris,
If your using Linux, try channel bonding both interfaces into one that you run 
snort against.

HTH,
Tony

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