A common and very misleading http error is the status with code 404.2 .
It is misleading because it belongs to the 404 family which may indicate
that the resource was not found, however this error indicates that the
server has blocked our request by it’s lockdown policy.
After coding our routing handler in our ASP.NET application (available in .NET 3.5 and in much easier way in .NET 4)
Since IIS-6 doesn’t use .Net as a natural part of it’s pipeline there is a
need to do some configuration.