I am not able to get the MCU conference sample working in Firefox (https://<server-ip>:3004/).
It works in Chrome. Your documentation says that the p2p sample is not working in Firefox. But the conference sample should work.
Is there a way for Firefox?
I could fix the problem by myself:
The problem was a missing certificate for the erizoController (port 8080).
The MCU example works after visiting the following url in Firefox and submitting the self-signed certificate: