Hi All, I've been running a reverse proxy here for sometime quite successfully. However now I am looking into blocking certain useragents from accessing the various sites currently being served by Squid. I have created a new acl using the following: acl badbrowsers browser "/etc/squid/badbrowsers.conf" http_access deny badbrowsers In /etc/squid/badbrowsers.conf I created a test entry of ^libwww and restarted squid. Squid runs and indeed serves sites but using http://www.botsvsbrowsers.com/SimulateUserAgent.asp to simulate a useragent of libwww I was able to connect successfully and was not denied access as I hoped. Unfortunately my grasp of using regular expressions is extremely limited verging on non existant. Would anyone have an example that I could use to block libwww for example? Best regards Robert