Greetings all, I'm running a rogue (the company knows about it but doesn't support it) web server for my dept and I'd like to be able to authenticate users transparently. The company is currently doing this on their own supported Intranet servers via NTLM on IIS. All I'm really looking for here is a way to extract the user name from the 'Authentication:' HTTP header using PHP on Apache (FC4). It seems that some of the string can be extracted using base64_decode(). Unfortunately it is not the part of the string that I need. It's just the domain name, the computer's NET BIOS name and the Auth-type which of course is NTLMSSP. I found a mod_ntlm for Apache, but even if I could compile it on FC4 (yes, I tried) I'm not sure I need/want the full functionality of NTLM - just a way to extract the user name of the user logged into the client machine from the HTTP header using apache. It seems that there are many sites out there that do this in Java and Perl, but none describe a way to do this in PHP......any ideas?