In order to solve the problems of user account management and security protection in current group information system

this paper proposes a three-in-one AAA system of account

authentication and audit based on zero-trust architecture. Firstly

it describes the function of user management

authentication authorization

user audit and other modules of the AAA system. Secondly

in view of the conventional network boundary protection problem

the authentication authorization method based on zero trust architecture is applied to identify the business scenario

thus to ensure the reliability of the business system environment. Lastly

it illustrates the logic of the AAA subsystem and group-level system development platform configuration. The proposed AAA system can effectively improve the business security of group-level enterprise information system

compensate for the security issues of user login account under zero-trust environment

and further improve the security protection ability of network equipment

application equipment

system and application management in group-level enterprise.