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IEEE 802.11i standard supports a secure access control for wireless LAN and IEEE 802.1x standard includes various authentication method protocols. It is expected that next generation wireless LAN security techniques will be based on IEEE 802.1x and IEEE 802.11i standards. However, at present users who are not familiar with a computer and an authentication details have difficulty to setup the network security based on IEEE 802.11i. Accordingly, this paper proposes authentication scenarios to minimize the process needed by users, a password method which is changed randomly and periodically, and authentication protocols. The proposed protocols provide convenience for nonprofessional computer users as well as secure the home network environment against the unwanted attacks such as a dictionary attack or a replay attack and it uses SNMP and the system to be able to detect an intrusion it supposes will occur.