Shulou(Shulou.com)06/01 Report--

I believe everyone is familiar with remote connection management. Remote management does bring a lot of convenience to our life, work and study. However, what is the principle of remote connection? the following is an introduction to NAT and the principle of remote connection. First of all, we all understand that if we have a public network address, we need all the terminal equipment of our entire small local area network to go online, then we need NAT technology to map our local area network address (private network address) into this public network address through NAT technology, so that all the terminal devices in our entire local area network have access to the Internet. There are three categories of NAT: static NAT, dynamic NAT, NAPT 1, and static NAT: it is the simplest and easiest to implement, which permanently maps the internal network address to the legitimate public network address of the external network. 2. Dynamic NAT: through a series of protocols on the extranet, it is mapped to the intranet. 3. NAPT: map the address of the internal network to a port of the external network address (this is the remote connection) about the remote connection: suppose we now have a computer in the company's local area network, the IP address is: 192.168.0.10 / 24 what if you want to remotely control this computer at home? First, we know that the port number for remote connection management is 3389. Port 3389 of the 192.168.0.10 address is mapped to a port number (unoccupied) on the public network address. At this time, at home, we turn on the computer, connect to the Internet, turn on the remote desktop management, enter the company's public network address, followed by ": Port number" (xx.xx.xx.x:3390). At this time, you can connect. Several common port numbers: remote Desktop connection: 3389 telnet:23 http:80 https:443 TFTP:69 FTP:21

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