Netgear WFS709TP User Manual Page 26

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WFS709TP ProSafe Smart Wireless Switch Software Administration Manual
1-10 Overview of the WFS709TP
v1.0, June 2007
Encryption
The Layer 2 encryption option you can select depends upon the authentication method chosen.
Table 1-1 lists the authentication methods available, with their corresponding encryption options.
You can configure the following data encryption options for the WLAN:
Null. No encryption is used and packets passing between the wireless client and WFS709TP
are in clear text.
Wired Equivalent Protocol (WEP). Defined by the original IEEE 802.11 standard, WEP
uses the RC4 stream cipher with 40-bit and 128-bit encryption keys. The management and
distribution of WEP keys is performed outside of the 802.11 protocol. There are two forms of
WEP keys:
Static WEP requires you to manually enter the key for each client and on the WFS709TP.
Dynamic WEP allows the keys to be automatically derived for each client for a specific
authentication method during the authentication process. Dynamic WEP requires 802.1x
authentication.
Temporal Key Integrity Protocol (TKIP). TKIP ensures that the encryption key is changed
for every data packet. You specify TKIP encryption for WPA and WPA-PSK authentication.
Advanced Encryption Standard (AES). AES is an encryption cipher that uses the Counter-
mode CBC-MAC (Cipher Block Chaining-Message Authentication Code) Protocol (CCMP)
mandated by the IEEE 802.11i standard. AES-CCMP is specifically designed for IEEE 802.11
encryption and encrypts parts of the 802.11 MAC headers as well as the data payload. You can
specify AES-CCMP encryption with WPA2 or WPA2-PSK authentication.
Mixed TKIP/AES-CCM. This option allows the WFS709TP to use TKIP encryption with
WPA or WPA-PSK clients and use AES encryption with WPA2 or WPA2-PSK clients. Mixed
TKIP/AES-CCM allows you to deploy the system in environments containing existing
WLANs that use different authentication and encryption methods.
Table 1-1. Encryption Options by Authentication Method
Authentication Method Encryption Option
None Null or Static WEP
802.1x Dynamic WEP
WPA or WPA-PSK only TKIP
WPA2 or WPA2-PSK only AES
Combination of WPA or WPA-PSK and WPA2 or
WPA2-PSK
Mixed TKIP/AES
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