Hello everyone, I've ever realized there are some urls which does bypass at the squid authentication. for exemplo windows update with url follow http://download.windowsupdate.com The user have ever been autenticated before on the same session but when arrive turn this url the squid drop because there have wasn't autentication. at least is what says the squid log..... 1309807178.100 0 128.2.20.219 TCP_DENIED/407 2234 GET http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootseq.txt - NONE/- text/html even I allow this url in my http_access the squid drop it because there have wasn't autentication. there is any thing I have to do at the my squid to it allow urls without authentication ? squid version: 2.6.STABLE21 on Red Hat Enterprise 5.6 any tip is welcome.