squid acl question

I need to allow the anti virus user to access the udate website but deny
it to access anything else, so I have the file:

/etc/squid/avusers


avg

and the following acl’s


acl avwhitelist dstdomain .avg.com
acl avuser proxy_auth_regex "/etc/squid/avusers"

http_access allow avuser avwhitelist
http_access deny avuser all

the problem is that the avg user can surf all the web, any sugestion?

Try to rename /etc/squid/ avusers to avusers.txt and then reload squid.
Also make sure following acl exists in your squid.config >> * acl <office> src 192.168.1.0/24* Sample IP range ]