FIELD: communications engineering.
SUBSTANCE: proposed system, device, and method are designed for subscriber identification module (SIM) based authentication concerning user making access to wireless local area network (WLAN) without preliminary connection in compliance with international protocol (IP) jointly with level 2 encryption mechanism to protect communication circuit between equipment terminal and mobile communication system. Proposed method is used to establish tunneling of point-to-point protocol (PPP) for authentication and coordination of keys (AKA) between terminal and access controller to provide SIM-based access to mobile communication system. Proposed access controller (AC) has server for point-to-point over Ethernet (PPPoE) connection to tunnel AKA dialogs from client of PPP installed in terminal for same purpose also incorporating traffic router and client's authentication service protocol for remote users over remote authentication dial-in user service (RADIUS) communication channels. So, AC incorporating RADIUS client is disposed between RADIUS intermediate party accessed by WLAN access point (AP) and mobile communication network wherein SIM-based authentication is made.
EFFECT: enhanced reliability of protecting communication circuit between terminal equipment and mobile communication network.
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