Access a device on a remote site

Hi

I would like to get my Home Assistant to connect to a device that is on a remote site using a DDNS and port forwarding to the device

Need way more info.

What kind of device (include model number and everything)

How you can connect is dependent on what it is.

The device is a TP Link HS100 plug.
I have a device on a remote site not connected to the site running Home Assistant.
I would like to connect to the remote device using DDNS and control it from the site running Home Assistant.