Insurgency: How to connect to RCON using the in-game console

First, open the console using the configured hotkey (default: The key directly left of the 1 key). If that doesn’t work, remap the key in the settings.

Then enter

rcon_password "mypassword"

to set the password to connect to the RCON server.

Now you can use admin commands in the format

rcon <command>