The new Network Access Protection (NAP) platform built into Windows Vista, Windows Server 2008, and Windows XP SP3 helps protect your private intranet by enforcing compliance with computer health requirements. But troubleshooting enforcement behaviors in this platform can be challenging. The Cable Guy explains how NAP health policy evaluation works and how you can troubleshoot the most common issues.

Alas, due to the pressures of a demanding new role at Microsoft, this is the Cable Guy’s last column. Browse through his older columns (more than a year’s worth!) for lots of useful networking information.