Hi guys! I have the following setup: LAN -> UTM firewall with transparent proxy -> Squid -> WAN The UTM is taking care of user authentication (SSO). I need to pass the user ID to Squid. We need to have AD-group based rules on Squid as well. But the UTM is able to add only this field to the HTTP request: Proxy-Authorization: Basic YmlnYm9zczptYW5hZ2VtZW50 So there is only username and group membership in the header. How can i make the squid to trust and handle this properly? Thanks, Attila