Apache authentication: NTLM Single Signon

NTLM single sign on under Apache
Install needed packages (you will need both the main and testing repositories from edge):

apache2

apache-mod-auth-ntlm-winbind

samba (joined to a Windows Domain) with winbind running

add to httpd.conf (virtual host):

AuthType NTLM

NTLMauth on

NTLMAuthHelper "/usr/bin/ntlm_auth --helper-protocol=squid-2.5-ntlmssp"

Require user jbilyk

Don't forget to customize the final line with the username(s) that you wish to limit usage to. Alternatively, make the final line "Require valid user" and change the helper line to inlude something like "-require-membership-of="WORKGROUP\Domain Users"".
Restart apache and test