Website monitoring on devices on network?

[Remah]

GlassWire only monitors devices that it is installed on.

Your question has been asked before so the response from the GlassWire team will be much like the following:

Monitoring network from one PC

GlassWire is an endpoint monitor that focuses on Android/Windows. You can monitor another Windows PC remotely. https://www.glasswire.com/userguide/#Remote_Monitoring Our “Things” tab shows all the devices on your network and lets you know when a new unknown device joins. https://www.glasswire.com/userguide/#Things_Tab

Many of us users would like full network monitoring but we primarily get GlassWire for the application monitoring which is why GlassWire needs to be installed on every device you want to monitor.