Weidmuller WI-MOD-945-E: 900Mhz Wireless Ethernet & Device Server v2.16 - Manual (Page 34)

Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual
Page 34 www.weidmuller.com Rev 2.136
You will now need to go t o the “Security Menu” and enter in the encryption keys (WEP), passphrase (WPA), etc.
WEP (64 bit) & (128 bit)
Encryption Keys 1 to 4
These are the keys used to encrypt radio data to protect
data from unwanted eavesdroppers when WEP Encryption is
selected. These keys should be the same for all WI-MOD-
945-E units in the same system.
WEP keys must be entered as pairs of hexadecimal digits
separated by colons. Hexadecimal digits are in the range
0...9 and A...F.
64bit WEP requires 10 Hexadecimal digits, and 128bit WEP
requires 26 Hexadecimal digits. For example,
12:AB:EF:00:56. for 64bit encryption, and
12:AB:EF:00:56:15:6B:E4:30:C8:05:F0:8D for 128bit
encryption
Encryption keys must not be all zeros, i.e. 00:00:00:00:00
Default WEP Key
One of the four keys may be selected as the default key, and is used to encrypt transmitted messages from the configured
unit. A WI-MOD-945-E can receive and decrypt a message from a module that has a different default key index as long as
each module has the same key configured at the same index.
WEP Open Authentication Mode

Station sends an authentication request to the Access Point

Access Point then authenticates the Station

Station then associates with the Access Point and joins the network.
WEP Shares Authentication Mode

Station sends an authentication request to the Access Point

Access Point then sends a text based message to the Station

Station uses its own WEP key to encrypt the text based message and sends it back to the Access Point.

Access Point then decrypts the message using its on WEP key and if it matches authenticates the Station.

Station then associates with the Access Point and joins the network.
WPA / WPA2
When WPA Encryption is selected, 128bit Encryption keys are
internally generated based on the Passphrase and System Address
(ESSID). The Passphrase must be between 8 and 63 characters in
length, and the Passphrase must be the same for all WI-MOD-945-
E units in the same system.
Figure 18 - WEP
Figure 19 - WPA