I do not believe that this is possible at this very moment. We are always working to enhance Firefox OS and you can file a bug to get this feature added. You can file a bug here.

Thanks man, I filed a bug like you suggested. Bug 904919

I just ordered a ZTE Open and have this very same concern. Hopefully VPN support is added soon.

Same here, even if it doesn't right now hopefully soon. I want to get away from android but really only looking towards FFOS and UT. More towards the former than the latter.

Dont forget to vote up the issue.

https://bugzilla.mozilla.org/show_bug.cgi?id=904919

Thank you for your interest and for purchasing a device! The bug reported has went through some employees. I'm sure that we'll get something done shortly.

The best VPN experience I had in a very long time https://www.waselpro.com/en/ . I managed to hide my IP adress and unblock websites directly with just one click application. It is not easy to find a real good VPN provider. it aupports all browsers perfectly.