Practical Network Scanning

Authentication, authorization, and accounting

Authentication, authorization, and accounting (AAA) is a function for centrally and securely controlling access to IT infrastructure resources. This is achieved by enforcing policies and providing audit functionality by keeping track of activities performed on a given device. In simple terms, authentication can refer to identifying a user with a username and password. The AAA server matches user's authentication credentials against credentials setup and stored in a back-end database. The authorization process validates whether the user has the authority to do a specified task or not. This can include accessing or executing any command on a given resource. The final piece in the AAA function is ...