Nortel 6120 Fundamentals page 101

Because the WEP encryption algorithm is compromised, it does not thwart
determined attackers and eavesdroppers. Even 128-bit WEP is only roughly
twice as secure as 40-bit WEP. Therefore, the effort to program many
handsets with 128-bit keys may not be worth the effort put into it.
For the best security on the WLAN Handsets 2210/2211/6120/6140, use
WPA2-PSK; for best handset security on the WLAN Handset 2212, use
IPsec VPN.
The following are the security options:
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Copyright © 2007, Nortel Networks
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* None—disables any 802.11 encryption or security authentication
mechanisms.
WEP (Wired Equivalent Privacy)—a wireless encryption protocol that
encrypts data frames on the wireless medium, providing greater security
in the wireless network. If WEP Encryption is required at this site, each
wireless handset must be configured to correspond with the encryption
protocol configured up in the APs. Select the entries from the following
options to enable the wireless handset to acquire the system.
Note 1: By default, WEP options are off. If WEP is desired, options
must be configured in the wireless handset that match those
configured in the APs.
Note 2: Encryption codes are displayed as they are entered. For
security reasons, codes are not displayed when a user returns to the
Admin menu Encryption options.
Note 3: WEP can be configured to optional at the AP if there are
wireless devices in use that do not have WEP capability. All wireless
devices must be upgraded to WEP capability for a fully secured
WEP environment.
Note 4: WEP settings must match the AP settings.
Configure each of the following options to match exactly the settings
in the APs:
— Authentication—select either Open System or Shared Key.
— WEP—select either WEP Off or WEP On.
— Key Information—scroll through the options.
– Default Key—enter the preshared key number specified for use
by the wireless handsets. This is 1 through 4.
– Key Length—select either 40-bit or 128-bit depending on the
key length specified for use at this site.
– Key 1-4—scroll to the key option that corresponds to the
Default Key that was entered above. Press Select and enter
the encryption key as a sequence of hexadecimal characters.
Nortel Communication Server 1000
WLAN Handsets Fundamentals
NN43001-505 01.04 Standard
Release 5.0 4 September 2007
WLAN Handset 2210/2211/2212 101