I have setup a remote access VPN on a flat network consisting of 30 clients and 3 file and print servers (Win2K, Win2003 and Win Storage Server 2003). The VPN Firewall is an ASA 5505.
I have encountered very slow response in manuevering about the server directory structure over the VPN. Almost to the point of the connection locking up. I have figured out the optimum MTU and still i have slow response time. The really odd thing is that when i VPN in to the network and use Windows Remote Desktop, I get acceptable results. This leads me to beleive that there is a server setting that I'm unaware of.