All I am running squid 2.6 Stable 17 and am trying to look at the http headers that are being passed. To do this I did the following: external_acl_type My_Explicit_Auth ttl=120 children=10 %LOGIN %EXT_USER %{Header} /usr/bin/php -f explicit_auth_acl.php But all I get is a - for the header. This is not a new auth, so I know that is set up correctly, as I get the %LOGIN information. Just wondering if I need to do something special to get the headers to show up? Jim