Admin Tools Connect is a plugin that allows you to manage your server using the ATC protocol.

AdminTools Connect is a plugin that allows connections with the ATC
protocol.
The ATC protocol is a peer to peer remote console over https. That means
it does not require any open ports to function.
It is obviously developed for admintools.app.
For more technical info consult the
admintools documentation on ATC.
ATC and input the name you want for that server. Then press the generate server id and copy button.