Hi, My Squid proxifies every web access for my WinXP clients. The only thing that bugs is authentication to internal IIS servers using "native Windows" authentication. >From what I read, this is due to the way NTLM is build - requiring session re-use (http://wiki.squid-cache.org/NTLMIssues). I found mails stating that this is not supported (yet) but the more recent was from 2005. What I can't make sure is if this is solved as of 2.6-STABLE. I read "Authentication enhancements including Negotiate/Kerberos support, extra workarounds for NTLM clients and others using Microsoft Integrated Login." in the Changelog so I tried installing 2.6 (from OpenBSD packages) but the IE client still fails authenticating. I am not talking about authenticating users onto Squid to be allowed to use it as a Web proxy, but really use Squid to proxify authentication process to IIS web servers. So, is Squid (>= 2.6) able to proxify NTLM authentication so that I can achieve the following scenario: (Internet Explorer) <-> (Squid) <-> (IIS website using NTLM authent.) If so, what's the first available version ? And what are the conf keywords to look for ? Thanks a lot for any help! Jo