What is AAA server?
AAA server refers to the process of authentication, authorization and accounting used on the network protocol for remote authentication in the network protocol of user services (Radius). Radius allows remote users or computers to access a computer network server. If the AAA server process is not required, the server is called "open" or "anonymous". Internet service providers (ISP) usually use Radius and AAA Server to identify and account their clients. Companies also use it to identify and allow access to the network to their employees when they work from a remote location.
When a user sends a request to access the network server from a remote location, they must identify themselves to the server. The application is usually composed of "login information", which usually takes the form of username and password or access phrases. The request will also send information such as the phone number of dialing or network address for the network to verify the user's identity.Network checks the users against its database.
As soon as the user's identity is verified, the network sends back the response either "Access refused", "Accept" Access ". If access is rejected, the user is completely denied access to the network, usually due to unconfirmed or invalid credentials. If access is attacked, the network will ask for more information to verify the user. This usually occurs in networks with higher security levels. If access is accepted, the user is verified and the network access comes.
After verification, the server then checks that the user is entitled to access specific programs or sites that the user requests for use. Some users will be allowed to access some parts of the server, but will not be authorized to use others.
The latest process in the AAA server subtitle. When the user is awarded access toThe network server, the "Accounting" signal is transmitted to the server. While the user is on the network, the temporary access signals can be sent to the network server for updates in the user session. When the user closes his access to the network, the "accounting stop" signal is transmitted and recorded and provides information on transmission, transmitted data and other information about the user's access. This data is sent so that the user can be charged for its use, but can also be used for security, monitoring or statistical collection purposes.