Proxy rules and Web filter

This section is about howto define rules and ACL on your proxy.
Understand that you have 2 ways to filter your users:
1) The Web filter engine:
The web filter engine is in charge to deny/allow access according categories/Time/users.
It is designed to to increase production by forcing users accessing to specifics topics websites.
2) Proxy ACL :
Proxy ACL are designed to intercept access directly on the proxy without Web filter engine needs.
There are more simple.
ACL rules are in charge to perform bandwith limitation, deny/allow access from MAC/IP/Websites Addresses.