Setup a Proton gateway (sys-proton) - not a Proton VPN

I want to test a few services of Proton (Mail, Drive, Pass, Lumo, SimpleLogin, Meet…) and I am wondering if someone here as made a “sys-proton”: A gateway to limit one (all-in-one) or several proton (minimal) qubes to access Proton services servers only. I am not interested in setup a Proton’s VPN, nor Proton’s email bridge.

Has someone already made a IP list? Is it reliable or does Proton dynamically move things around? Are you using a DNS to limit traffic to Proton services only?

In my experience, for Mail and Drive the DNS name list is pretty static (I’ve had to add things to it like once in a year).

Here’s my list, although only for Mail and Drive, not the other services.

NO  ACTION  HOST                   PROTOCOL  PORT(S)  SPECIAL TARGET  ICMP TYPE  EXPIRE  COMMENT
0   accept  account-api.proton.me  -         -        -               -          -       -
1   accept  account.proton.me      -         -        -               -          -       -
4   accept  drive.proton.me        -         -        -               -          -       -
6   accept  fra-storage.proton.me  -         -        -               -          -       -
8   accept  mail-api.proton.me     -         -        -               -          -       -
9   accept  mail.proton.me         -         -        -               -          -       -
10  accept  pass.proton.me         -         -        -               -          -       -
11  accept  pmecdn.protonweb.com   -         -        -               -          -       -
12  accept  proton.me              -         -        -               -          -       -
13  accept  simplelogin.io         -         -        -               -          -       -
14  accept  zrh-storage.proton.me  -         -        -               -          -       -
2 Likes

It would be better to call it sys-firewall-proton