[c-nsp] ASA/PIX shun "feature"

Jeff Kell jeff-kell at utc.edu
Fri Apr 7 18:00:34 EDT 2006


Laurent Geyer wrote:
>
>
> On 4/7/06, *Jeff Kell* <jeff-kell at utc.edu <mailto:jeff-kell at utc.edu>>
> wrote:
>
>     Here's some food for thought, especially for anyone using "shun"
>     as a perimeter defense.
>
>     If you're being attacked by an IP, you apply a "shun" and no more
>     traffic traverses a PIX/ASA with that source IP.  Or so  I thought.
>
>
> Right, the expected behavior is  for the  src  IP  address  to  be 
> filtered and  the  existing  connections  sourced  from  that host 
> to  be  removed  from  the  connection  table.
They say that happens *if* you fully qualify the shun (source/dest
IP/port proto).

Jeff


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