Microsoft has released Download details: Microsoft IPsec Diagnostic Tool. Looks very interesting. From the download page:

Overview:
Microsoft IPsec Diagnostic Tool checks for common network problems on the host machine and if found, suggests repair commands. Further, it collects IPsec policy information on the system and parses the IPsec logs to deduce why a failure might have happened. Beyond IPsec, it offers trace collection for VPN, NAP client, Windows Firewall, Group policy updates, Wireless and System events. The Diagnostic Report generated by the tool is conclusive and is derived from the system logs collected by the tool during its analysis phase. These logs are self sufficient to diagnose any network related issues. For further assistance, the logs would require to be shared with Network Administrators or Microsoft support.

System Requirements

Supported Operating Systems: Windows Server 2003 Service Pack 1; Windows Server 2003 Service Pack 2; Windows Server 2003 Service Pack 2 x64 Edition; Windows Server 2008; Windows Vista Business; Windows Vista Business 64-bit edition; Windows Vista Enterprise; Windows Vista Enterprise 64-bit edition; Windows Vista Ultimate; Windows XP 64-bit; Windows XP Home Edition ; Windows XP Professional Edition ; Windows XP Service Pack 1; Windows XP Service Pack 2

Joe