I've gotten it to work, I successfully have apache authenticating against our Active Directory. For those interested, here's what the Apache code looks like (with the sensitive stuff xed out): <Directory /> Options Indexes FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all AuthType Basic AuthName "Secure Area" AuthzLDAPAuthoritative On AuthBasicProvider ldap AuthLDAPURL ldap://xxxxxxx.lib.msu.edu:389/ou=staff,dc=lib,dc=msu,dc=edu?sAMAccountName?sub?(objectClass=user) AuthLDAPBindDN [log in to unmask] AuthLDAPBindPassword xxxxxxxxx require valid-user </Directory> Again, this is a linux server, Ubuntu 8.10 with Apache2 version 2.2.9 BTW, there is a nice program called likewise-open that makes it easy to join an Ubuntu server to an AD Domain; to install it: sudo apt-get install likewise-open Cheers, Eric Weston @@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Eric Weston, Information Technology Professional MSU Libraries Systems (517)432-6123 x229