Appendix B - Wireless Technology
165
MVP-8400i 8.4" Modero® ViewPoint® Touch Panel with Intercom
The 802.11i architecture contains the following components: 802.1X for authentication (entailing the use of
EAP and an authentication server), RSN for keeping track of associations, and AES-based CCMP to
provide confidentiality, integrity and origin authentication.
WPA2 implements the full standard, but will not work with some older network cards. Both provide good
security, with two significant issues:
- either WPA or WPA2 must be enabled and chosen in preference to WEP.
WEP is usually presented as the first security choice in most
installation instructions.
- in the "Personal" mode, the most likely choice for homes and small offices,
a passphrase is required that, for full security, must be longer than the
typical 6 to 8 character passwords users are taught to employ.
With the RC4 released to the general public the IEEE implemented the Advanced Encryption Standard
(AES) as the cipher engine for 802.11i, which the Wi-Fi Alliance has branded as WPA2.
FIG. 75 WPA Overview
FIG. 76 WPA2 Overview