Hello,
I hate password on game servers, and so I prefer not to use them and use whitelists instead, on Factorio servers it has the option for whitelisting players with in game commands, but this seems to reset every time I restart the server which I do daily to check for updates and do a backup. I assume as it appears within the config file that AMP doesn't recognise and so removes it on restart.
If I had time I would try and remedy this myself, but I'm new to this level of codding and may break AMP whilst trying to implement it, and I thought maybe its something that can be implemented easily (By someone who knows what they are doing) in a future update.
I imagined that in the Server settings have a list of whitelisted players and and on/off switch.