This solution only works when there is a one-to-one mapping between users and ip addresses but imagine circumstances where all users have same ip addresses( e.g. terminal server users). The definite solution to this problem is "cookie-based authentication" which is implemented by some commercial products like bluecoat ProxySG (http://www.bluecoat.com/downloads/support/BCS_tb_enabling_transparent_auth.pdf) and Novell BoarderManager (http://support.novell.com/techcenter/articles/cfa03332.html) --- Henrik Nordstrom <hno@xxxxxxxxxxxxxxx> wrote: > On Sat, 30 Apr 2005, Varun wrote: > > > Is it possible to have any sort of > > authentication with squid running as > > transparent proxy. > > Yes, but not the HTTP authentication. > > To make authenitcation in a transparent proxy you > need to figure out some > way of authenticating the user based on his IP. The > external_acl interface > of Squid-2.5 or later allows you to plug this into > Squid. > > Regards > Henrik > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com