Hello I am new in this list. I am working in a software development group for linux, we are desinging a software for parent control to internet access. We are using squid and I have several doubts about the possibilitys squid offer to authentication. I have achieved configure squid with pam_auth but in this case when the browser is launched requests the user introduce his userid and password. However I desire squid is able to recognise that user initiated the session. I have read squid is able to do this with the authentication scheme: ntlm. Regarding this the mayority of my doubts are concentrated, the situation is : -The system i have to configure is a single machine -The users squid has to recognise are the users defined in this machine - If i use ntlm authetication: I would have to configure samba and winbind in the same machine (I believe this cause problems)? The machine will act like samba server of domain NT ¿?? I would have to include the system users like samba users, with the same password ( I will be duplicating the users) OR IS THERE ANOTHER EASIEST WAY?? - Neither authentication mechanism allow this? On the other hand, I need squid works transparently to the browser. According to the information I have compiled in your list and squid documentacion, squid allow authentication or transparency but not both at the same time. In my situation, if i need configure squid with authentication (because i have to configure squidguard's acls for achieve a web content filter sensitive to user) What would be the best option? I have recopiled some information about autoconfigure browser. In a linux system, could be the solution ?¿ Thank you in advance for your attention. I'm sorry I made you too much question, considering my english is not enough good. Cheers Maria