Network security includes private communication privacy, information confidentiality, network integrity, control access to restricted network domain, sensitive information, and use of public networks such as Internet. In order to solve these problems, major organizations and technology suppliers have launched various networks and information security technologies. Its technical summary is as follows:
AAA: Authorization, certification, and billing is a technique that provides access to network resource control, policy execution, use audit, and necessary server cost information. Authentication provides a way to identify users, that is, before accessing authorization, users have a valid username and valid password. Authorization processing mainly determines whether the user has access to some information or some network subdomains. The billing is predicted to predict the network resources consumed by the user, including the number of system time or the number of users, the number of data, which can be used for authorization control, billing, trend analysis, resource utilization, and activity capacity. A special AAA server or program that performs these features is usually provided: authorization, certification, and billing services.
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