yes you can with this program : auth_param ntlm program /usr/local/bin/ntlm_auth --helper-protocol=squid-2.5-ntlmssp auth_param ntlm children 30 auth_param ntlm max_challenge_reuses 0 auth_param ntlm max_challenge_lifetime 2 minutes but your proxy must join your AD domain. See this excellent doc : http://web.irtnog.org/howtos-orig/freebsd-winbind Regards, -----Message d'origine----- De : Spada Marco [mailto:Marco.Spada@xxxxxxxxxxxx] Envoyé : mercredi 16 novembre 2005 09:55 À : squid-users@xxxxxxxxxxxxxxx Objet : Squid and trasparent auth with PDC Hi everybody, I use Squid, and my customer would he like authenticating the users, that useas Squid, via Primary Domain Controler (Active Directory). In this moment I use the supported Squid program "msntauth": the user contact Squid that open the pop-up, the user e password are verifyed by the PDC (Squid knows the PDC ip address and send it the credential for the authentication. But my customer don't wont use everytime the pop-up (when I close the I.E. and open, the pop-up... !!). Answere: Can I authenticating my customer's users via PDC/Active Directory in transparent mode, without the pop-up ? Thank You. Marco