Symantec Intruder Alert v3.6

Hello,

I have installed Symantec ITA on a Windows 2000 server running IIS and is a designated web server. When I access my server remotely, Symantec ITA reports several high level alerts and I can’t figure out why. Any help would be appreciated. These are the alerts:

RequireSecuritySignature-Change
RestrictAnonymous-Changed
EnableSecuritySignature-Changed

User on each is “unknown” and it shows that registry values have changed from 1 to 0.