Dell PowerConnect W-Series Instant Access Point 6.2.0.0-3.2.0.0 | User Guide 143 | Encryption
Chapter 11
Encryption
Encryption Types Supported in DellW-Instant
Encryption is the process of converting data into an undecipherable format or code when it is
transmitted on a network. Encryption prevents unauthorized use of the data. The following
encryption types are supported in DellW-Instant:
WEP
Though WEP is an authentication method, it is also an encryption algorithm where all users
typically share the same key. WEP is easily broken with automated tools, and should be considered
no more secure than an open network. Dell recommends against deploying WEP encryption.
Organizations that use WEP are strongly encouraged to move to Advanced Encryption Standard
(AES) encryption.
TKIP
TKIP uses the same encryption algorithm as WEP, but TKIP is much more secure and has an
additional message integrity check (MIC). Recently some cracks have begun to appear in the
TKIP encryption methods. Dell recommends that all users migrate from TKIP to AES as soon as
possible.
AES
The Advanced Encryption Standard (AES) encryption algorithm is now widely supported and is
the recommended encryption type for all wireless networks that contain any confidential data.
AES in Wi-Fi leverages 802.1X or PSKs to generate per station keys for all devices. AES provides a
high level of security, similar to what is used by IP Security (IPsec) clients. Dell recommends that
all devices that cannot support AES be upgraded or replaced so that they are capable of AES
encryption.
NOTE: WEP and TKIP are limited to WLAN connection speed of 54 Mbps. For 802.11n
connection only AES encryption is supported.
Encryption Recommendations
Dell recommendations for encryption on Wi-Fi networks are as follows:
l WEP —Not recommended
l TKIP— Not recommended
l AES— Recommended for all deployments
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