Private IP address Leaked using the PROPFIND method

Summary
The remote web server leaks a private IP address through the WebDAV interface. If this web server is behind a Network Address Translation (NAT) firewall or proxy server, then the internal IP addressing scheme has been leaked. This is typical of IIS 5.0 installations that are not configured properly. Detail: http://www.nextgenss.com/papers/iisrconfig.pdf
Solution
see http://support.microsoft.com/default.aspx?scid=KB%3BEN-US%3BQ218180&ID=KB%3BEN-US%3BQ218180