Re: Finding asymmetric path

[Duane Waddle <duane.waddle () gmail com>]

On Sat, Nov 28, 2009 at 1:41 PM, Brielle Bruns <bruns () 2mbit com> wrote:

> My partner Tammy says a PIX could probably accomplish the same task (we have some here for the corp lan stuff, 
> including spares).

Yes, a PIX/ASA would stop this cold.  The TCP state tracking would not
allow traffic to pass unless the whole 3-way handshake was observed by
the box.  Only recently did Cisco add features to make tracking the
TCP connection state optional.
(http://www.cisco.com/en/US/docs/security/asa/asa82/configuration/guide/conns_tcpstatebypass.pdf)
 The larger ASA-5580 machines can be virtualized into dozens (or more)
security contexts as needed.  I imagine it would take some effort to
figure out how to cleanly integrate such a configuration into a POP.

--D