Setting a password
A password should be set for the server to allow remote administration and is found in the server configuration settings:
server:
password: "changeme"
This will allow clients to use \rcon changeme <cmd>
to remotely administrate the server. To create a password that must be provided by clients to connect:
game:
password: "letmein"
This will add an additional dialog to the in-browser client to accept the password. It will only appear if the server indicates it needs a password.