I built an extension to make SOCKS as simple as possible without a bunch of scary permissions: https://addons.mozilla.org/en-US/firefox/addon/proxyswitcheroo/

I built an extension to make SOCKS as simple as possible without a bunch of scary permissions: https://addons.mozilla.org/en-US/firefox/addon/proxyswitcheroo/ https://addons.mozilla.org/en-US/firefox/addon/proxyswitcher... I'll probably be updating it in 59 to use this new API though. It almost completely removes the need for a settings page and should allow you to set all the complex proxy config you want using the firefox UI. It does seem to need a broader permission than I would have liked though.