How to configure URL restriction in squid proxy server

Open squid configuration fine c:/squid/etc/squid.conf and add/modify the following.

The following needs to be in that order and I placed it right after the line 'acl CONNECT method CONNECT'.

acl whitelist url_regex -i "C:\squid\etc\url.acl"

http_access allow whitelist 

http_access deny all

Then add the htaccess user details to the file C:\squid\etc\url.acl

Finally restart the squid service.