How to automatically generate firewall rules to filter sites?

Question

System administration

There is a client who has only a certain list of sites open, everything else is closed. He often asks to open this or that site for visiting. Now I have to parse the html of the site with my eyes, where the output is a list of domains for the formation of rules. For example, to open the site 2ip.ru, the list of domains is as follows:

• 2ip.ru
  
• *.google syndication.com
  

Is there any online service to simplify the creation of firewall rules? For example, you drive in the url of the site and it returns a list of rules, or a list of urls grouped by domain.

Answer 1

put noscript and run in full blocking mode. noscript shows that he has locked. Stupid, of course, but you don't have to look :)