I would greatly appreciate some help in configuring the above. I am trying to authenticate against an NT PDC (server name is NT-SERVER) The Linux box is RedHat 6.2, kernel 2.2.17-14 Here is my /etc/pam_smb.conf: OXSPRING NT-SERVER NO_BDC Here is my /etc/pam.d/httpd #%PAM-1.0 #[For version 1.0 syntax, the above header is optional] # # The PAM configuration file for the `httpd' service # #auth required pam_pwdb.so md5 (I have got this part to work) auth required /lib/security/pam_smb_auth.so debug account required pam_pwdb.so md5 I have protected a dirctory on the Linux box with the following .htaccess file: AuthType Basic AuthName "secure area" require group staff require user chris And I have specified this in my httpd.conf file: <Directory /home/httpd/html/testpam> AllowOverride AuthConfig </Directory> My hosts file on the Linux defines the IP address of NT-SERVER. An extract of the logs when trying to supply username and pw: [error] (13)Permission denied: access to /testpam/ failed for 192.168.1.105, reason: Authentication service cannot retrieve authentication info. I beleive the mod_auth_pam is ok because I can authenticate locally against my shadow file. My Questions: Do I need to set something up on the NT for this to work? Do I need to add the Linux to the NT domain? Why can't I authenticate Thanks for "any" guidance. Regards, Chris Chris Andrew Oxspring Network Solutions Limited Tel: +44 (0)1226 761188 Fax: +44 (0)1226 761199 Email: candrew@oxspring.com Web: www.oxspring.com