Is there a virtual service in the router?

I believe that many of my friends have seen the virtual service in the router. If you don't understand her purpose, continue to read this article. First assume that the IP address of a computer A in the home/company is 192.168.1.10. You will be on a business trip. You need to access this computer A in the hotel using the remote desktop of Windows. Let's take a look at how the router should be set up before you can use the remote desktop. There is another article about how to use the remote desktop. For routers, let's take tp-link as an example. At home, log in to the router management interface and enter the virtual service function (usual routers have this feature). We can see that multiple entries can be added to the virtual service. Each entry has these parameters: service port, IP address, and protocol. Service port: Usually, there are many network-related programs on our computer, such as QQ, browser, download software, etc., all of which need to receive data through the network. When the network data arrives at the machine, how does the network protocol layer know which program to hand over the data to? This is what the port does. The port behaves as a number. When the software is connected to the network, it must specify which port to use. Once the connection is successful, the port is monopolized by the software. Any data transmitted to this port is received by the software. Some ports are contracted, such as ftp 21, http 80, telnet 23, DNS 53 and so on. The port of the remote desktop we discussed is 3389. Of course, the software is defined rather than contracted. We can change it. We won't discuss the changes here. IP address: This is the IP address of a computer in the internal network. This is of course the address of computer A. Protocol: There are three kinds of All (all), UDP and TCP. If you can't remember whether it is TCP or UDP, choose All, there is no big impact. Service port, IP address and protocol, the three are connected, for example, 3389, 192.168.1.10 in the example, All means to inform the router that when the WAN port receives the port number 3389, the protocol is not limited, the data will be Forward to the intranet address where 192.168.1.10 goes. In this way, computer A can receive remote desktop requests from the external network. Ok, this time you can drive a computer and a router to go on a business trip. Just find a place where you can go online and you can use the remote desktop to log in to this computer. [Thinking about the problem] Suppose you have a website built on the A computer in your home. What items do you need to add to the virtual service on the router? This article comes from [system home] www.xp85.com Related articles recommended: 1. This trick is really practical: how to set up the router to control other people's network speed 2. How to use the upgrade router to solve the network failure 3. This set the router, others Do not know your wifi password.