Encrypted signalling and media (CMA, HDX, RMX, VBP)
I'm trying to figure out what is implemented in Polycom's UC infrastructure from the security point of view. I've found that RMX implements H.235, but at what level? I couldn't find anything about HDX and CMA.
My practical questions is, that if I have an RMX and VBP, how will be a call secured coming from the Internet to a virtual meeting room. Is the diffie-hellman key exchange resistive for man in the middle attacks? What is the key exchange procedre if two of my HDXs calls eachother? Is that resistive for man in the middle attacks? Thanks.