On 12/02/2014 10:32 p.m., bazn wrote: > Hi Amos > > Squid Version is 3.3.9 > > im using basic authentication. > > I don't know exactly what you mean with wheres the username come from. I > think it comes from the auth helper and it's passed to the external acl > helper via the %LOGIN variable. The default logged username is *a* user name (note spaces) that could come from any one of a handful of sources: decoded auth header, user=FOO response key from auth helper, user=FOO response key from the ACL helper, SSL client certificate User CN, IDENT protocol lookup. Given that its Basic auth, it is probably the decoded auth header one in your case. Amos