Rust Admin is an old but still very widely used Admin Tool.
Head over to the website and download the .zip and extract to a directory you’ll remember.
Start up the RustAdmin.exe and you’ll be greeted with the application.
Click the Configuration Tab to begin setting up your server.
Using the settings you used for the Installing Your Server Article enter them into the IP / Server Port / RCON Port / Password fields
Enter a Name and Click OK
If you did it correctly you’ll see it change from a red disconnected to a green connected.
You have two boxes the top one sends chat commands. The bottom sends console commands.