Windows, Mac or Linux
VanyaVPN runs on Windows 10 and 11 and on macOS, and the Linux AppImage is on the download page. There’s no need to restart Firefox after connecting, just reload your tabs.

Two settings to check
Chrome and Edge take their proxy settings from the system, but Firefox has network settings of its own. Two of them matter for a VPN.
Both are in Settings, which opens from the three-line menu in the top right corner of the window.
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Proxy
Under General, scroll to the bottom, find Network Settings and click Settings. By default it says Use system proxy settings, which is what you want.
If you ever typed a proxy address in there, choose No proxy or go back to the system settings. Otherwise Firefox routes through that old proxy on top of the tunnel, and sites see its address instead of the country chosen in the app.
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DNS over HTTPS
On desktops in the US, Canada, Russia and Ukraine, Firefox turns on DNS over HTTPS by default and looks sites up on its own DNS server over an encrypted connection. The switch is near the end of Privacy & Security.
With VanyaVPN you can leave it alone, since those lookups stay inside the tunnel as well. Default Protection is fine. If secure DNS doesn’t answer, Firefox falls back to the regular one, and the app keeps that one tunneled too.
Android and private windows
Is Firefox on Android covered by the VPN?
Yes, once VanyaVPN is on the phone. It covers all of Android, browsers included. Here’s how to set it up.
Do Firefox private windows use the VPN?
Yes. Since version 67, Firefox add-ons don’t run in private windows by default, but the VPN covers every kind of window the same way.
YouTube in Firefox needs no settings of its own. For the throttling in Russia and TVs, read VPN for YouTube, while laptops and desktops have their own guide.