Heartbeat monitors

Hi, I am planning to monitor local network gateway. Can you advise how to configure monitor for this task?

Thanks!

You can start with going through the official guide: https://www.elastic.co/guide/en/beats/heartbeat/current/heartbeat-installation.html

I read the documentation several times and have not found the the right option.
If you point me to the answer I am gratefull.
Thanks!