Oh and something more individual:
If you have a cloudflare account with a domain, you can even use an own subdomain
for that you have to login once on this computer with
cloudflared login
browser window should open where you can login to your account and select a domain
(or if you have a system without a browser, then copy the url you get and login there)
and then you can do like this, if you have mydomain.com on cloudflare: