SSPI Authentication module

One of our customers, where we had to build an Intranet system already had a Windows Network, including NT Servers and SQL databases. All the user credentials were stored in the local Active Directory. So, it would be nice to use all this information for the intranet, so Administrators and staff employees did not need to insert and maintain the same information twice. This is were SSPI comes in.
mod_auth_sspi is a module written for Apache webserver. It allows Microsoft Internet Explorer, and Windows clients to authenticate using any of the authentication protocols built into the Windows Security Support Provider Interface (SSPI), for example in combination with Active Directory and Windows Domains. So it allows an Apache/NT web server administrator to use the existing NT security infrastructure to authenticate users.
Mod_auth_sspi processes user access restrictions just like the rest of Apache. That is, you put a require directive into the appropriate .htaccess or configuration section, and authentication will be performed.
[code]sspi apache[/code]
Mod_auth_sspi is probably most useful in intranets. Authentication can happen transparently, using the user's current username and password – however, basic authentication is still supported.
SourceForge SSPI module website