I don't know if many ISA server guys and girls also read the Routing and Remote Access Blog but, because ISA makes extensively use of the Windows RAS features for the VPN stuff, it might be useful to follow that one too.
Lately there was a two part blog about the RAS Administration DLL:
- RAS Administration DLL - Your customized solution to manage the server!
- Steps to develop a RAS administration DLL using Visual Studio
In my humble opinion, one of the applications of the RAS Administration DLL could be to implement a control on the ISA server such that only one VPN connection could be made to an ISA server using a single user name. This is basically to prevent users from distributing their usernames and hence resulting in lot of connections with the same username. I think this is a much asked feature.
Maybe some ISA folks with some software development skills can build and test such a control for the ISA server community. 😉