How can I block specific websites so that clients would not be able to access them?
You can block access to specific websites and sub-domains by using the "Web filter" function, which can be found in the Services → Web filter section. There you can configure either a White list or a Black list:
- White list - allows access to every site included in the list and blocks everything else
- Black list - blocks access to every site included in the list and allows everything else
For more detailed information on the Web Filter function, click this link: Web Filter