Firefox Hello is a new beta feature in Firefox 34 which give users the ability to do plugin-free video-conferencing without leaving the browser (using WebRTC technology).

If you cannot get it to work after adding the Hello button to the toolbar, this post may help.

Preferences to check

There are a few preferences to check in about:config:

• media.peerconnection.enabled should be true
• network.websocket.enabled should be true
• loop.enabled should be true
• loop.throttled should be false

NoScript

If you use the popular NoScript add-on, you will need to whitelist the following hosts:

• about:loopconversation
• hello.firefox.com
• loop.services.mozilla.com
• opentok.com
• tokbox.com

RequestPolicy

If you use the less popular but equally annoying RequestPolicy add-on, then you will need to whitelist the following destination host:

• tokbox.com

as well as the following origin to destination mappings:

• about:loopconversation -> firefox.com
• about:loopconversation -> mozilla.com
• about:loopconversation -> opentok.com
• firefox.com -> mozilla.com
• firefox.com -> mozilla.org
• firefox.com -> opentok.com
• mozilla.org -> firefox.com

I have unfortunately not been able to find a way to restrict tokbox.com to a set of (source, destination) pairs. I suspect that the use of websockets confuses RequestPolicy.

If you find a more restrictive policy that works, please leave a comment!

http://feeding.cloud.geek.nz/posts/making-firefox-hello-work-with-noscript-request-policy/