The default port of http is port 80, which is the access port of the web server and is used for web browsing; port 80 is open for HTTP. HTTP is the most commonly used protocol for surfing the Internet and is mainly used in WWW. The protocol for transmitting information on the service.
#The default port of http is: port 80, which is the access port of the web server and is used for web browsing.
Port 80 is open for HTTP (HyperText Transport Protocol); HTTP is the most commonly used protocol for surfing the Internet and is mainly used in WWW (World A protocol for transmitting information on Wide Web services. In fact, when entering the website, the browser (not IE) has already entered the protocol for you, so if you enter http://baidu.com, you are actually accessing http://baidu.com:80; because the default port for browsing web services is The number is 80, so just enter the URL without entering ":80".
【Video tutorial recommendation:HTTP tutorial】
## Port vulnerability:
Some Trojan programs can use port 80 to attack computers, such as Executor, RingZero, etc.Port classification
Ports can be divided into 3 major categories according to port numbers: (1) Recognized ports ( Well Known Ports): From 0 to 1023, they are tightly bound to some services. Usually communication on these ports clearly indicates the protocol of a certain service. For example: Port 80 is actually always HTTP communication. (2) Registered Ports: from 1024 to 49151. They are loosely tied to some services. This means that there are many services bound to these ports, and these ports are also used for many other purposes. For example: many systems handle dynamic ports starting around 1024. (3) Dynamic and/or Private Ports: from 49152 to 65535. In theory, these ports should not be assigned to services. In practice, machines are usually assigned dynamic ports starting at 1024. But there are exceptions: SUN's RPC port starts at 32768. The above is the entire content of this article, I hope it will be helpful to everyone's study. For more exciting content, you can pay attention to the relevant tutorial columns of the PHP Chinese website! ! !The above is the detailed content of What is the default http port?. For more information, please follow other related articles on the PHP Chinese website!