We have a school computer lab for which we essentially want to run a redirector (with a bit of caching for some flash apps). I had hoped that squid would let me simply screen on the basis of the browser user env value and would include in the log the site to be accessed and the user. the hosts we are using are Macs and do not have identd. we may have access to ldap for students but do not want students to have to specifically log into anything once they have logged onto the workstation. I could not find the documentation for the ldap helper. There is also a mention of unix authentication and I am not sure where details for that can be found. Can someone tell me whether there is a way to authenticate just on the basis of the browser environmental variable user and if not where I can find a good identd for OS X 10.3.x or where I can find details on using ldap. thanks marc