I’ve written a few times about Windows 7 and Server 2008 R2’s DirectAccess technology. It’s something that whilst complex, has the potential to be extremely useful when providing services to remote workers.
Microsoft have just released a beta of the Infrastructure Planning and Design guide for DirectAccess. Whilst I’ve not had a chance to read through in on detail, the IPD guides are usually very helpful, and certainly the information I’ve seen through the TAP programme has been pretty good.
You’ll need to join the beta through the connect site, but information on how to do that can be found here: http://technet.microsoft.com/en-us/library/ee477347.aspx