Where is the firewall established in the internet environment?

The firewall in the Internet environment is established at the intersection of the internal network and the external network. Firewall technology is a type of technology that helps computer networks build a relatively isolated protective barrier between internal and external networks by organically combining various software and hardware devices for security management and screening to protect the security of user data and information. technology.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

The so-called firewall refers to a protective barrier composed of software and hardware devices and constructed on the interface between the internal network and the external network, and between the private network and the public network. It is an image representation of a method of obtaining security. It is a combination of computer hardware and software that establishes a security gateway (Security Gateway) between the Internet and the intranet, thereby protecting the intranet from intrusion by illegal users, that is, The firewall in the Internet environment is established at the intersection of the internal network and the external network.

The main function of firewall technology is to promptly discover and deal with security risks, data transmission and other issues that may exist when computer networks are running. The treatment measures include isolation and protection, and can also control various operations in computer network security. Implement recording and testing to ensure the security of computer network operations, protect the integrity of user data and information, and provide users with a better and safer computer network experience.

The alarm function of firewall technology is very powerful. When an external user wants to enter the computer, the firewall will quickly issue a corresponding alarm, remind the user of the behavior, and make its own judgment to decide whether to allow it. When external users enter the internal network, as long as they are users in the network environment, this kind of firewall can perform effective queries and display the found information to the users. Then the users need to implement corresponding settings on the firewall according to their own needs. Allowed user behavior is blocked.

Through the firewall, the traffic of information data can also be effectively viewed, and the upload and download speed of data information can also be grasped, so that users can have good control and judgment on the use of the computer and the internal conditions of the computer. It can also be viewed through this firewall, which also has the function of starting and closing programs. The log function inside the computer system is actually the firewall's summary and organization of the real-time security status and daily traffic status of the computer's internal system. .

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