[c-nsp] ARP/MAC spoofing protection from a bad nic

[Joseph Jackson]

Hey all,

 

 

            Earlier today we had what seems to be a NIC in a server go
bad and started answering with its mac address for every IP within its
subnet.  Of course this caused a massive LAN meltdown which wasn't all
that fun.  We'd like to never have that happen again so I am wondering
what you guys do out there to prevent this type of issue happening or at
least make trouble shooting the problem and finding the offending device
faster.  Thanks!

 

 

Joseph