[SandrilaFriman]

Is it practical to use RCON to control server on phone? I would avoid using RCON and instead setup SSH to connect to your server. You can use PuTTY on your phone to connect to your server using SSH, or RCON.

RCON doesn't encrypt your authentication packets, like SSH does, which means somebody watching network traffic could intercept your login credentials.

SSH also has other security features like logging failed login attempts, closing a connection after a number of failed attempts to prevent brute force attacks, and a number of features.

Additionally, if you choose, you could setup public key authentication with SSH to only allow users with authorized private keys to try logging in.

(Edit) Adding to this, both RCON and SSH will provide the same functionality in terms of controlling, so it comes down to deciding on security