On a windows 2000/2003 domain we have users coming into a Cisco VPN Concentrator via the Cisco VPN Client software, these then seem to announce themselves as browse masters to the domain controller local to the concentrator and force elections all the time, with the main DC losing the elections which is strange anyway as it is the pdc.
Am I right in thinking udp broadcast traffic for this should not be crossing over or should be blocked?
A possibly relevant command I did find was:-
no ip forward-protocol udp NetBIOS-ns
I dont understand enough about it at this point so any pointers would be useful.