Yes I compiled Squid myself on Ubuntu. Our SA is pretty good so I would expect he has installed all the updates on the M$ machine. Not sure why you need netstat cuz as far as I can tell based on the results of test #3 and #4 above with ldapsearch it appears that AD is working and I can get info out of it using ldapsearch. Here is the relevant netstat line though: UDP 10.0.0.12:389 *:* 600 I know we have the "Openfire IM Server" running on Linux successfully authenticating against this AD server so I know that it 'should' work. In fact when I started trying to get AD to work I essentially borrowed as much of the LDAP config from the Openfire environment as I could to get started yet so far no luck . . . Thx! Brig -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Cannot-get-basic-ldap-auth-to-work-with-AD-tp4663282p4663409.html Sent from the Squid - Users mailing list archive at Nabble.com.