What is meant by authentication, authorization, and accounting ( aaa)? a protocol that provides the framework for the negotiation of algorithms, protocols, modes, and keys for ike. network services that provide security through a framework of access controls and policies, enforcement of policies, and information needed for billing purposes. a remote access client/server protocol that provides authentication and authorization capabilities to users whoare accessing the network remotely. it is not a secure protocol. sets up a point-to-point connection between two computer systems that can be transmitted over multiple types of networks.