(PRTG installation tutorial, when it comes to PRTG (PaesslerRouterTrafficGrapher), many readers may think of the MRTG (MultiRouterTrafficGrapher) we have introduced, which can monitor the network usage of routers, switches, servers and other network devices, and can monitor the data. It is published as a Web page for users to view remotely. In the process of using it, the author found that PRTG is superior to MRTG in many aspects.)