1, the mapped port of the router.

The LAN web server192.168.1.100, the default port number is 80, and the public address of the gateway router is 22 1.23.45.67. Change the tcp port number of 8080 for safe access from the Internet. Visiting http://221.23.45.67: 8080 means192.168.1.100: 80 means port mapping, and the port number can be changed or not.

2, firewall open port

Firewall port control generally refers to TCP port access to the target machine (basically does not control the source port number). Of course, there are two situations: internal network access to external network and external network access to internal network, and setting rules can also be allowed and prohibited.