Certain aplications don't support proxy authentication. How can i make Squid ask for authentication for most of the sites while not asking for a list of certain sites? He is a piece of my current squid.conf: ===== . . . redirect_program /usr/bin/squidGuard . . . acl windomain proxy_auth REQUIRED acl blocked_sites url_regex -i "/etc/dBrowser/proxy.blacklist" acl unblocked_sites url_regex -i "/etc/dBrowser/proxy.whitelist" . . . http_access deny blocked_sites !unblocked_sites http_access allow windomain . . . ===== As you can see, besides proxy.blacklist and proxy.whitelist , i use squidGuard for controling access based on its own lists. Here are the URLs i have to exclude from proxy authentication: Enu.vs.mcafeeasap.com Ptb.vs.mcafeeasap.com Vs.mcafeeasap.com Virusscanasap.mcafeeasap.com [color=red:fc27c85c0e]McAfee anti-virus refuses updating from Internet due to proxy authentication! [/color:fc27c85c0e] Thanks for any help. Edinaldo La-Roque