Re: Stopping Arp poison attacks

[Cedric Blancher <blancher () cartel-securite fr>]

Le jeudi 01 juin 2006 à 08:14 +0000, P. Entester a écrit :
> If i recommend our customers to bind the MAC addresses of mission critical 
> servers' network interfaces to their respective ports on the routers and 
> switches, does that migitate most of the threat or am i missing something 
> important?

No, that does not mitigate the issue. What you're missing is that ARP
cache poisoning does not change host MAC address, but the association
between a MAC address and an IP address in ARP cache.

In addition to pointers that were already given, you can try this one
for ARP cache poisoning understanding:

        http://sid.rstack.org/arp-sk/

One other mitigation technic is static ARP cache entries, but it can
become painful to maintain quite fast as network grows.


-- 
http://sid.rstack.org/
PGP KeyID: 157E98EE FingerPrint: FA62226DA9E72FA8AECAA240008B480E157E98EE
> > Hi! I'm your friendly neighbourhood signature virus.
> > Copy me to your signature file and help me spread!

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