PHP, Redhat, Active Directory

[karoic]

I'm rather new to the concept of ldap and connecting to a w2k server from linux.

Currently, the company I work for uses Cold Fusion on a IIS server, we have intranet web pages that when you open the page it will automaticly know your username and allow you access to whatever areas your allowed to. You never have to logon though the web page.

So.. I'll assume some how the browser? is handing the windows username to the IIS server. Then cold fusion reads it from a enviroment var. It is then checked against the domain active directory.

I want.. To setup a redhat system that can do the same thing.

You go to a webpage, the linux system gets the user name, checks it against a A.D. server and then hands it to whatever server side script. I'm a PHP fan myself and with any luck I'll get the company to look into PHP options.

Any help would be great. I assume I need to install LDAP rpms and configure them. Just not sure of the steps, or how the username is transfered to the system without them logging in though the website.

Thanks.

[karoic]

An update, and further questions. I've figured out everything except for the NTLM section. I have OpenLDAP setup and can connect to a w2k domain, and I have also wrote php code that allows me to verify login against a w2k domain. The only thing I have left to solve is getting the NTLM information from the IE browser. This is a native function to windows but apparently very non-existant in the linux world.

If anyone has any experince with NTLM with PHP any help would be great..