Hi! Please, read: http://wiki.squid-cache.org/Features/Authentication?action=show&redirect=SquidFaq/ProxyAuthentication#Authentication_in_interception_and_transparent_modes You just can't authenticate in transparent mode. If you have an AD (or samba), you could centrally configure the proxy on all of the computers. Also, you could use wpad to auto-configure the browsers to use the proxy. I hope this helps, Ildefonso Camargo On Fri, Jan 29, 2010 at 6:31 AM, Ricardo Souza <ricardo.souza@xxxxxxxxxxxxxxx> wrote: > Hi, > i configured a squid to auth at my Active directory. > I was working fine when i set proxy manually. > When i try to make it in production i got only TCP_DENIED. > > How can i configure it on transparent mode + ldap_auth > > > This is my squid.conf: http://187.8.216.250/squid.conf > > > thanks >