Abstract: Aiming at the security problems existing in the current single SSID wireless network that different identity users who are authenticated and authorized can access the wireless network anytime and anywhere,resulting in the same use of wireless networks by users with different identities, such as bandwidth,access control (ACL) and so on,this paper proposed a solution that grouping users access to the wireless network based on 802.1 X and VLAN technology,and implemented the solution with FreeRADIUS technology.The deployment experiment of the solution proves that when users of different identities acces the same wireless network,the proposed scheme can set different access policies,which effectively improves the security and simplifies the management of wireless network.

Key words: 802.1X, Access security, Grouping users, VLAN, WLAN