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802.1x: Authentication which is a first line of defense against
intrusion. In the authentication process, the Authentication Server
veries the identity of the client attempting to connect to the network.
Unfamiliar clients would be denied access.
EAP (Extensible Authentication Protocol) is available through the
Windows
®
XP operating system. You will need to use the same type
of EAP protocol on all devices in your network when using the 802.1x
feature.
WPA-Enterprise and WPA2-Enterprise is ideal for businesses
that have existing security infrastructures in place. Management
and security implementation can now be centralized on a server
participating on the network. Utilizing 802.1x with a RADIUS (Remote
Authentication Dial-in User Service) server, a network adminstrator
can define a list of authorized users who can access the wireless
LAN. When attempting to access a wireless LAN with WPA-Enterprise
or WPA2-Enterprise configured, the new client will be challenged
with a username and password. If the new client is authorized by
the administration, and enters the correct username and password,
then access is granted. In a scenario where an employee leaves the
company, the network administrator can remove the employee from
the authorized list and not have to worry about the network being
compromised by a former employee. WPA2-Enterprise is far superior
to WPA-Enterprise, because the encryption of data is upgraded
with the Advanced Encryption Standard (AES).