Setting up NAP with IPsec enforcement isn't for the faint of heart. There are hundreds of moving parts and if you get one of them wrong, it can set you up for a long and arduous troubleshooting session. One good way to start your NAP/IPsec journey is with a virtual lab. After the virtual lab, check out my article series where I give you the step by step and hundreds of screen shots so that you can setup your own lab and see that NAP with IPsec isolation actually works!
Check out the virtual lab at:
Thomas W Shinder, M.D., MCSE
Sr. Consultant / Technical Writer
Prowess Consulting www.prowessconsulting.com
PROWESS CONSULTING documentation | integration | virtualization
MVP — Forefront Edge Security (ISA/TMG/IAG)