Network security consists mainly of system security, network security, information dissemination security and information content security. Specifically:
1. System security
Operating system security is the security of the information processing and transmission system, which focuses on the proper functioning of the system. Avoid damage and loss to information stored, processed and transmitted by the system as a result of its collapse and damage. Avoid the release of information, interference or interference with others as a result of electromagnetic defrost。
2. Network security
Security of system information on the network, including user password identification, user access controls, data access rights, mode controls, security audits. Security issues and stepping. Computer virus control, data encryption, etc。
3. Information dissemination security
Information dissemination security on the internet, i. E. Information dissemination consequences, including information filtering. It focuses on the prevention and control of the consequences of the dissemination of illegal and harmful information and on avoiding the uncontrolled spread of information freely transmitted by clouds on public networks。
4. Information content security
The security of content on the web focuses on protecting the confidentiality, authenticity and integrity of information. Avoiding the use of security loopholes in the system by attackers for such acts as wiretapping, impersonation, fraud, etc. To the detriment of legitimate users. Its essence is to protect the interests and privacy of users。
The tools used to maintain cybersecurity consist of vieid, digital certificates, digital signatures and local or cloud-based antitoxic software。
1. Internet firewall
It enhances the security of the agency's internal network. The internet firewall manages access between the internet and the internal network of institutions. In the absence of firewalls, each node of the internal network is exposed to other hosts on the internet and is highly vulnerable to attack. This means that the security of the internal network is determined by the robustness of each host and is equal to that of one of the weakest systems。
Ii. Vieid
Within this web-based ecosystem, each network user can trust each other's identities, and the network user can freely choose whether to have an electronic identifier. In addition to being able to increase network security, electronic identifiers allow network users to write down, or not even at all, those annoying passwords by creating and applying more credible virtual identities。
3. Digital certificates
The ca centre uses digital certificate authentication techniques centred on digital encryption, which allow the ca centre to handle the various types of information transmitted on the internet, such as encryption, decryption, digital signature and signature authentication, while also guaranteeing that the digital transmission process will not be invaded by outlaws or that its contents will not be viewed even if invaded。
