[TriLUG] Odd Network problem

[Ryan Leathers]

I'm not sure I saw anyone mention this, so I'll add it.

This symptom can be caused by a device in the network performing proxy arp.
Reasonable culprits are things that do "fancy" NAT.  Unreasonable culprits
are hosts made to do the bidding of evil-doers by crashing VLANs and
performing MitM tricks.

An example of the former is a Cisco PIX with statics on a lower security
interface.  To stop the behavior in this case you'd use the not-so-well
documented command "sysopt noproxyarp <interface>".  Anyway, this is just an
example to help you consider possible culprits in your environment.


-----Original Message-----
From: Chris Knowles [mailto:chrisk at trilug.org]
Sent: Sunday, February 13, 2005 1:07 AM
To: Triangle Linux Users Group discussion list
Subject: [TriLUG] Odd Network problem


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