Network mapping refers to network port mapping, that is, mapping a port of the IP address of an external host to a computer in the intranet to provide corresponding services. When a user accesses this port of the IP, the server will automatically map the request to the computer in the corresponding LAN.
The operating environment of this article: Windows 7 system, Dell G3 computer.
Network mapping refers to network port mapping, that is, mapping a port of the IP address of an external host to a computer in the intranet to provide corresponding services.
When a user accesses this port of the IP, the server will automatically map the request to the computer in the corresponding LAN. Port mapping is dynamic and static.
In layman's terms, port mapping is to map the IP address of the host's LAN to the IP address of the public network WAN. When a user accesses the port of the host that provides the mapped port, the server will request the port provided within the local zone. The host network for this specific service.
Extended information:
In layman’s terms, port mapping is to map the intranet (LAN) IP address of a host into a public network (WAN) IP address. When a user accesses a port of a host that provides mapped ports, the server will transfer the request to a host within the local LAN that provides this specific service; using the port mapping function, an external network can also be Multiple ports on the IP address machine are mapped to different ports on different machines on the intranet.
The port mapping function can also complete some specific proxy functions, such as proxying POP, SMTP, TELNET and other protocols. Theoretically, it can provide mapping of 65535 (total number of ports) - 1024 (number of reserved ports) = 64511 ports.
Example how to set up port mapping: For example, if you want to map a WEB server with an IP address of 192.168.111.10, you only need to fill in the server's IP address 192.168.111.10 and the TCP port 80 that provides web services into the router. in the port mapping table.
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