There are conflicting requirements of
security and convenience. End users desire a simple, quick logon using stored passwords
on client devices; however, for stronger authentication, particularly in enterprise networks,
two separate credentials from the user, a password and a time-changing code are typically
required. This is similar to the credentials required to withdraw cash from an ATM, you
must present both a password (something you know) and the appropriate ATM card
(something you have).
The level of privacy and authentication required may also be a function of the
application or location in which the WLAN is deployed. Enterprise applications may have
different needs than public space applications. A given residential application may need the
security level of an enterprise. Some government applications can use commercially
available WLAN security technologies. The security solutions must be broad enough to
support a variety of application spaces. The solutions must be easy to configure and use, as
a All authors currently affiliated with Aruba Networks, Inc
Wireless Local Area Network Security 146
the same laptops and client devices may be used for Internet access in more than one
location.
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