In this guide
Abiotic Factor server owners may wish to password protect their server, this allows them to easily give access to a select few players. Passwords are commonly added to small friend group or community servers.
Changing Server Password
Login to the Kinetic Panel and Stop your server.
Go to the Settings.
Locate the Server Password field and set your desired value. If left blank the server password is automatically disabled.
Start your server to apply your new password.