tarmer wrote:The first way is to open up the ATEM network port(s) on our router and add the port number to the ATEM's IP address in the ATEM software if it'll accept it.
Bad idea. There is practically NO security built-in to these products as they are engineered with the expectation of a private local control network.
If you decide to share the ports outside your network, you should do so over a private VPN connection to ensure at least some measure of protection.