Hello. I'm trying to block a all my users to use the internet except for a few of them. I'm trying to do this with acl but, is not working. Here's part of the squid.conf: # Port Squid listens on http_port 172.16.0.1:3128 transparent # Access-lists (ACLs) will permit or deny hosts to access the proxy acl lan-access src 172.16.0.0/16 acl proxy src 172.16.0.1 acl localhost src 127.0.0.1 acl CONNECT method CONNECT acl allowed src "/etc/ipaddress/ipAllowed" # Access rule http_access allow proxy http_access allow localhost #---- Block some sites acl blockanalysis01 dstdomain .scorecardresearch.com .google-analytics.com acl blockads01 dstdomain .rad.msn.com ads1.msn.com ads2.msn.com ads3.msn.com ads4.msn.com acl blockads02 dstdomain .adserver.yahoo.com pagead2.googlesyndication.com ad.yieldmanager.com acl blockads03 dstdomain .doubleclick.net http_access deny blockanalysis01 http_access deny blockads01 http_access deny blockads02 http_access deny blockads03 ####################################### http_access allow allowed #http_access allow lan-access --------- in ipAllowed there are 4 ip addresses: 172.16.250.1 172.16.250.12 172.16.254.13 Everyone is allowed to the internet. What am I doing wrong? Any suggestions.