Re: How Secure is Layer 2 ???

From: Bob Sinclair (bsin@cox.net)
Date: Wed Feb 12 2003 - 16:00:18 GMT-3


Trevor,

Here is a link that might be relevant:

http://www.sans.org/resources/idfaq/vlan.php

-Bob Sinclair
CCIE #10427, MCSE
Senior Network Engineer
Networking For Future, Inc.
www.nffinc.com
----- Original Message -----
From: "Trevor Angus" <trevor.angus@t-systems.co.za>
To: <security@groupstudy.com>
Cc: <ccielab@groupstudy.com>
Sent: Wednesday, February 12, 2003 1:45 PM
Subject: How Secure is Layer 2 ???

> Here is an interesting question. I want to configure a Pix FW to provide a
> controlled connection between 2 Vlans on a switch (Cisco 3550 or 6500).
> There is no layer 3 routing enabled for the "outside" interface vlan so in
> theory there should be no way to break out of that vlan.
>
> In theory I can't see a problem but perhaps I'm missing something???
>
> Cheers
> Trevor
.



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