Allied Telesis AT-WL2411 - Manual (Page 148)

Configuring Security
148
Configuring WEP 64/128 Security
Note
If you configure WEP 64/128 security for a radio, you cannot also
enable 802.1x authentication for that radio. 802.1x security uses
rotating WEP keys that are automatically generated.
In your 802.11b network, you can configure static WEP keys (for WEP 64
or for WEP 128 security) to provide security between the access points
and the wireless end devices. To use static WEP keys, your radios must
support WEP encryption. All access points and wireless end devices on a
particular network must use the same WEP encryption type and the
same WEP transmit key. You should periodically change this WEP
transmit key to prevent an unauthorized person with a sniffing tool from
monitoring your network and discovering the WEP key.
Since, static WEP keys can be difficult to update, the AT-WL2411 and
other Allied Telesyn products let you enter up to four WEP keys, and
then pick a WEP transmit key (1-4). It is easier to rotate the WEP transmit
key than to individually change all the WEP keys. For improved security,
use 802.1x security.
WEP 64 has four 40-bit encryption keys and one 24-bit initialization
vector (IV) key. To use WEP 64, you enter five ASCII characters or five hex
pairs for the WEP keys. WEP 128 provides a higher degree of encryption
protection. It has four 104-bit encryption keys and one 24-bit IV key. For
WEP 128, you enter 13 ASCII characters or hex pairs.
To configure WEP 64/128 security, perform the following procedure: