In the NCSA server, the port number can be selected from 0 to 65535, but the server administrator needs to set up the server so that only one port can be recognized. The default port number for Web services is 80. Experimental page services sometimes run on port 8080. Port 80 is fixed to a Web service, which is a port defined in the Hypertext Transfer Protocol to provide a Web service for a web page.
Extended data
80 is actually an interview: 80.
Generally, it uses 8080, which is completely different from webcahe. For example, in a linux server, apache runs port 80 by default, while apache-tomcat runs port 8080 by default. In fact, the port has no practical significance, just an interface, mainly depending on the listening port of the service.
Port 80 is mainly used for WWW (World Wide Web), which is a protocol for transmitting information on the World Wide Web. You can access the website by adding ":80" to the HTTP address. Because the default port number of the web browsing service is 80, you only need to enter the URL instead of ":80".
Baidu Encyclopedia -80 Port
Baidu Encyclopedia -8080 Port