Good morning!
Cedric Blancher <blancher_at_cartel-securite.fr> wrote:
> Le samedi 29 octobre 2005 à 12:48 +0200, Volker Tanger a écrit :
> > And yes, all unprotected switches can be subjected to ARP poisoning.
> > But (again) many manageable switches can be configured with
> > preventive measures:
> > - static/manual MAC/port mapping
> > - automatic one-time MAC/port config: the very first MAC/port
> > combination seen is taken as semi-static entry, all others are
> > dropped.
> > - limiting number of MAC addresses per port allowed
> > (which helps against rogue switches and router, too)
>
> Do you mean theses measures can prevent ARP cache poisoning ? Because
> they just don't.
If manual MAC/port mapping takes precedence over cache (which is
implementation dependant) - why not?
If port security disables the port (the attacker/flooder's one) as soon
as more than one MAC address is being announced there - why not?
Bye
Volker
--
Volker Tanger http://www.wyae.de/volker.tanger/
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Received on Nov 01 2005
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