codedeltajames wrote:if there's public / unauthorised access possible to your Atem then there's something fundamentally wrong with your network configuration.
First, you are assuming that the ATEM user has control over the network. That may not always be the case in some settings, and someone might need to set one up on a network that is shared by multiple parties, some of whom should not be able to directly control the ATEM even though they have legitimate reason to be on the network.
Second, there could be legitimate users of the network who would not be legitimate users of the ATEM. If sound, video and lighting are all sharing a show network, even if the users are generally trusted, there may not be any legitimate reason for the audio engineer to be able to control the ATEM. Why open it up to the entire crew if only a few of them should be able to use it?
Third, even if the network is 100% wired and limited to only those devices that are relevant to a performance, wired networks sometimes have accessible ports that someone might be able to sneak a connection into unnoticed and gain illegitimate access to what you would expect to be a private network. If they do, then a password is one more barrier to prevent them from disrupting the show by messing up the switcher.
Security is built up in layers: physical security is important, but it is not sufficient on its own.