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6-3 Understanding WEP/WPA Security Options
Fiel d
Desc rip tio n
You have two authentication options.
Network
• Open System:
Authentication
No authentication is imposed on the radio. However, if the 802.1x
option is configured, authentication of connections can be performed
by a RADIUS server.
• Shared: this is for shared key authentication. Data is encrypted.
Encryption Strength
You can select the following data encryption options: Disabled,
64- 128- or 152-bit WEP With Open System Authentication and 64-
128- or 152-bit WEP Data Encryption with Shared Key authentication
With WEP enabled, you can manually enter the four data encryption
Security Encryption
keys or use a passphrase to generate the keys automatically. These
(WEP) Keys
values must be matched between all clients and access points on your
LAN (key 1 must be the same for all, key 2 must be the same for all,
etc.)
Two ways to create WEP encryption keys:
•
Passphrase.
Passphrase functions as automatically case-sensitive characters.
However, not all wireless adapters support passphrase key generation.
• Manual. These values are not case sensitive. 64-bit WEP: enter 10
hexadecimal digits (any combination of 0-9, a-f, or A-F). 128-bit WEP:
enter 26 hexadecimal digits (any combination of 0-9, a-f, or A-F).
152-bit WEP: enter 32 hexadecimal digits (any combination of 0-9, a-f,
or A-F).
WPA Pre-Shared-Key uses a pre-shared key to perform the
WPA-PSK (Wi-Fi
authentication and generate the initial data encryption keys. Then, it
Protected Access
dynamically varies the encryption key. It uses Temporal Key Integrity
Pre-Shared Key)
Protocol (TKIP) for encryption keys. However not all wireless adapters
support WPA. Furthermore, client software is required on the client.
Windows XP and Windows 2000 with Service Pack 3 do include the
client software that supports WPA. Nevertheless, the wireless adapter
hardware and driver must also support WPA.
Identical to WPA-PSK with the exception of the way to encryption keys.
WPA 2-PSK
WPA2-PSK uses Advanced Encryption Standard (AES) for encryption
keys.
WPA-PSK
You may have the option of WPA-PSK associated with TKIP.
WPA 2-PSK
Alternatively, you can select WPA2-PSK associated with AES.