What is incorrect about firewalls?

The incorrect description of the firewall is "A firewall is a computer hardware that protects computers from fire." This description is incorrect; a firewall is actually a system that protects the network by executing control policies between networks. Including hardware and software; the firewall must be installed between the internal network and the external network.

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

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A firewall is a system that protects the network by executing control policies between stored networks. It includes hardware and software. The firewall must be installed between the internal network and the external network.

The main functions of the firewall include

①Check all data packets entering the internal network from the external network and flowing out from the internal network to the external network;

② Execute security policies and restrict all data packets that do not meet the requirements of security policies;

③Have anti-attack capabilities to ensure its own security.

Firewall technology

Firewall technology helps computer networks connect internal and external networks by organically combining various software and hardware devices for security management and screening. A technology that builds a relatively isolated protective barrier to protect the security of user data and information.

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.

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