A current standard by which network access servers interface with the AAA server is the Remote Authentication Dial-In User Service (RADIUS) which we have used the Microsoft NS server for in our deployment. Accounting is carried out by logging of session statistics and usage information and is used for authorization control, billing, trend analysis, resource utilization, and capacity planning activities.Īuthentication, authorisation, and accounting services are often provided by a dedicated AAA server, a program that performs these functions. This can include the amount of system time or the amount of data a user has sent and/or received during a session. The final plank in the AAA framework is accounting, which measures the resources a user consumes during access. Once you have authenticated a user, they may be authorised for different types of access or activity. Usually, authorisation occurs within the context of authentication. Authorisation simply is the process of enforcing policies: determining what types or qualities of activities, resources, or services a user is permitted. The authorisation process determines whether the user has the authority to issue such commands. After logging into a network device for instance, the user may try to issue commands. Now that the user has been successfully authenticated, a user must gain authorisation for doing certain tasks. If the credentials are at variance, authentication fails and network access is denied. If the credentials match, the user is granted access to the network. The AAA server which in our case is the Microsoft Network Policy Server compares a user’s authentication credentials with the user credentials stored in a database which in our case is the Windows Active Directory. The process of authentication relies on each user requiring access to having a unique set of criteria for gaining the appropriate access desired. Well, it is and as a good professional practice, securing network devices using the Triple A process meets many best security practices of our day.Īuthentication is the first process which provides a way of identifying a user ho requires access to network resource, typically by having the user enter a valid user name and password before access is granted. You have heard many say AAA is the best security model for user access and management to network devices.
Technologies Used In Our Scenario today to deploy Network Device Management with RADIUS Authentication using Windows NPS are the following How do you configure Network Device Management with RADIUS Authentication using Windows NPS to authenticate management SSH connections to Network Devices?
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