Try enabling DAI (Dynamic Arp Inspection) from a
Cisco device. It is turned OFF by default.
At 6:00 PM +0200 6/3/06, Cedric Blancher wrote:
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.
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