The port number of Neusoft firewall is assigned according to its function and protocol. A firewall is a device used to protect network security. It protects the internal network from unauthorized access and attacks by controlling the entry and exit of data traffic. Port numbers are used to identify applications or services in network communication. Different applications or services need to use different port numbers for communication.

The port number of Neusoft firewall is divided according to its supported functions and protocols. For example, common Neusoft firewall port numbers include port 80 (HTTP protocol), port 443 (HTTPS protocol) and port 2 1 (FTP protocol). These port numbers are assigned to ensure that the firewall can properly filter and manage certain types of network traffic.

In addition, the port number is also assigned to facilitate the configuration and management of network administrators. By specifying a specific port number, administrators can precisely control the access rights of different applications or services, thus improving network security.

It should be noted that the use of port numbers is not limited to firewalls, but also applicable to other network devices and applications. Therefore, in network communication, it is very important to allocate and manage port numbers reasonably to ensure the safety and normal operation of the network.

Extended content: Besides firewall, port number also plays an important role in computer network. They are used to identify and distinguish different network services and applications. Common port numbers are reserved port numbers and dynamic port numbers. Reserved port number refers to the port number used by some standardized services and protocols, such as port 80 of HTTP and port 2 1 of FTP. Dynamic port numbers are temporarily assigned during communication and used for temporarily established connections.

The use of port numbers is divided according to transport layer protocols such as TCP and UDP. TCP and UDP are two commonly used transmission protocols in computer networks, which provide reliable connection and connectionless transmission services respectively. Each protocol has its own port number range for correct identification and transmission in network communication.

In a word, port number plays an important role in network communication. They help to identify and manage different applications and services, and are also an important part of network security and configuration.