http://blogs.msdn.com/drnick/archive/2006/05/12/understanding-http-authentication.aspxThis article is now a part of the Windows SDK . Authentication is the process of identifying whether a client is eligible to access a resource. The HTTP protocol supports authentication as a means of negotiating access to a secure resource. The initialenCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/drnick/archive/2006/05/12/understanding-http-authentication.aspx#596257Fri, 12 May 2006 19:43:55 GMT91d46819-8472-40ad-a661-2c78acb4018c:596257Jason Haleyhttp://blogs.msdn.com/drnick/archive/2006/05/12/understanding-http-authentication.aspx#596309Fri, 12 May 2006 20:31:48 GMT91d46819-8472-40ad-a661-2c78acb4018c:596309Nicholas Allen's Indigo BlogThe clock continues to count down for the start of TechEd 2006 in Boston. &nbsp;We're now exactly one month...http://blogs.msdn.com/drnick/archive/2006/05/12/understanding-http-authentication.aspx#676827Mon, 24 Jul 2006 19:27:07 GMT91d46819-8472-40ad-a661-2c78acb4018c:676827Nicholas Allen's Indigo BlogI still get a lot of hits for the series of documentation articles I did back in April and May. &nbsp;All...http://blogs.msdn.com/drnick/archive/2006/05/12/understanding-http-authentication.aspx#1116777Tue, 21 Nov 2006 22:29:05 GMT91d46819-8472-40ad-a661-2c78acb4018c:1116777Nicholas Allen's Indigo Blog<p>I'm writing a middle-tier service that needs to act as the client. I can get the user name from the client</p> http://blogs.msdn.com/drnick/archive/2006/05/12/understanding-http-authentication.aspx#9474952Sat, 14 Mar 2009 09:52:09 GMT91d46819-8472-40ad-a661-2c78acb4018c:9474952Lost in history<p>Just like WCF, WWSAPI supports Basic, Digest, NTLM and Negotiate HTTP header authentication (If you are</p>