Note that the individual usernames and passwords are stored in a RADIUS server which the access point will communicate with to authenticate users. You may also see references to 802.1X, which is the standard for authenticating users (either wired or wirelessly) through a RADIUS server, and is the underlying protocol used by the WPA/2 Enterprise wireless encryption mode. The wireless encryption mode used to support this type of setup is “WPA Enterprise” or “WPA2 Enterprise” on the access point. If you have a more complex setup such as Active Directory for user logins, it is possible to connect your wireless network back to your Active Directory server for authenticating these users. A key advantage of this type of setup is that individual users can be added and removed from wireless access without disrupting other users or re-keying the network, which is why it is popular with enterprise customers. One of the lesser known features of 802.11 security, at least among home and small business users, is the ability to have individual usernames and passwords on a centralized authentication server which can be used by one or more wireless access point.
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