How to block a specific website on openvpn (oc ubuntu server)?

Question

linux

And are there any tools that can be put on the server to automatically block ads and various analytics counters?

Answer 1

You can add a ready-made list of bad addresses (advertising, spam sites, online casinos, viral activity, etc.) to /etc/hosts .
You can also use other dns servers, for example, from cloudflare or google, use dnscrypt-proxy.
Download clam-av antivirus - why not?
ufw firewall?
Well, in /etc/hosts you can add any of your addresses, of course.
I hope that you are not playing mini-adok at the level of Roskomnadzor.

Answer 2

https://github.com/looterz/grimd

Answer 3

Yandex DNS

Basic
77.88.8.8
77.88.8.1
Fast & Reliable DNS
Secure
77.88.8.88
77.88.8.2
No Rogue Sites or Viruses
Family
77.88.8.7
77.88.8.3
No Adult Sites