The easiest way to do secure live streaming is with RTMPS, which is basically RTMP over TLS. It encrypts the stream between the encoder and the CDN.
802.1x network security provides protection from someone connecting a rogue device to your network and unleashing a cyberattack. It offers security features like encrypted authentication channels and access controls such as digital certificates, user names and passwords.
Avoid a network security “gotcha” and ask the right questions about the network security compliance of your live streaming gear before buying.