Hosts file generator?

Question

Computer networks

There is a simple task: on the computer to block access to all sites except a few. We need a method as simple as possible, the main thing is not to slow down. The option was chosen to prescribe crooked dns and open access to the necessary sites with a hosts file. But sites turn to third-party resources (domains) a lot, and manually entering all addresses into a file is problematic. Are there ready-made solutions for generating a host file for a specified page? Or other possible ways to solve the problem? The solution needs to be as simple as possible.

Answer 1

buy vpn, and go to sites through it is not easier?

Answer 2

All the same, it is better to use a full-fledged DNS.
This will either be a solution on the router, or a proxy, or a service similar to skydns.

Answer 3

cmd->mmc->Add snap-in->Manage ip security policy.
we create rules in which we block everything, then we create rules that allow what is possible.