this post was submitted on 16 Jul 2023
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Hi

Does anyone know if I set up DoH in Firefox and connect to any VPN will that cause any leaks?

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[–] badgrandpa@lemmy.world 1 points 1 year ago (1 children)

Just asking because when I’m not using VPN would like to have DoH

[–] Morgikan@lemm.ee 1 points 1 year ago (1 children)

Ah, I understand. You should not see any leaks. The VPN provider on connection will often times pass a DNS option that supersedes existing DNS settings you have, but Firefox's DoH doesn't rely on the system resolver and instead uses their own. If interested in who they send queries to, you can find them listed at the bottom here: https://wiki.mozilla.org/Security/DOH-resolver-policy

[–] badgrandpa@lemmy.world 2 points 1 year ago

I checked for leaks with Mullvad check and showed IP from Surfshark VPN, but DNS from DoH Mullvad. So I think DoH is running within the vpn tunnel