What does network logical security include?

Computer network security refers to the use of network management controls and technical measures to ensure that the confidentiality, integrity and availability of data are protected in a network environment. Computer network security includes two aspects, namely physical security and logical security.

#Network logical security includes the integrity, confidentiality and availability of information.

There are many factors that cause insecurity to computer information, including human factors, natural factors and accidental factors. (Recommended study:web front-end video tutorial)

Among them, human factors refer to the fact that some criminals take advantage of the loopholes in the computer network, or sneak into the computer room to steal computer system resources, illegally Obtain important data, tamper with system data, destroy hardware equipment, and compile computer viruses.

Human factors are the greatest threat to computer information network security. Computer network insecurity factors are mainly manifested in the following aspects:

Confidentiality: The characteristic that information is not leaked to unauthorized users, entities or processes, or exploited by them.

Integrity: The characteristic that data cannot be changed without authorization. That is, the information remains unmodified, destroyed and lost during storage or transmission.

Availability: Features that can be accessed by authorized entities and used on demand. That is, whether the required information can be accessed when needed. For example, denial of service in a network environment, damaging the normal operation of the network and related systems, etc. are all attacks on availability.

Controllability: The ability to control the dissemination and content of information.

Auditability: Provide basis and means when security issues arise

The Internet is a network open to the whole world, and any unit or individual can easily transmit and obtain various information online. Information, the openness, sharing, and international characteristics of the Internet pose challenges to computer network security. The main insecurities of the Internet include the following:

1) The openness of the network

The network technology is fully open, making the network facing attacks from many aspects. Either attacks from physical transmission lines, attacks on network communication protocols, or attacks on vulnerabilities in computer software and hardware.

2) The international nature of the network

means that attacks on the network come not only from local network users, but also from hackers from other countries on the Internet. Therefore, network security faces International challenges.

3) Freedom of the Internet

Most networks have no technical restrictions on users’ use. Users can freely surf the Internet, publish and obtain all kinds of information.

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