5 - Configuring your Residential Gateway
SAGEM F@st™ 3202 Reference Manual- 288060387-01
Page 5-22
Reproduction and communication prohibited without the written permission of
E
To obtain the MAC address of a wireless network card:
- In Windows 98: Start then Run, enter winipcfg.
- In Windows XP, 2000, Me: Start then Run, enter cmd then ipconfig /all. Confirm by
pressing Enter.
- Identify your wireless network card from the list that appears, on the "Description"
line.
- The MAC address you are looking for corresponds to the "Physical address" line. It
comprises 12 hexadecimal characters (digits from 0 to 9 or letters from A to F).
WEP:
The WEP (Wired Equivalent Privacy) key is used to encrypt the information exchanged over
your wireless network, and is shared by the sender and receiver of the message.
Like the SSID, this WEP key must be configured the same on each computer connected to your
wireless network and on your Residential Gateway.
The format of the WEP key suggested by the Residential Gateway is as defined by IEEE
802.11b.
The keys can be of different length. The longer the key, the greater the data protection. Two key
lengths are available on the Residential Gateway:
•
64-bit encryption key,
•
128-bit encryption key.
A 64-bit encryption key is made up of 5 x 2 hexadecimal encoding characters (digits
from 0 to 9 or letters from A to F).
A 128-bit encryption key comprises 13 x 2 hexadecimal-encoded characters (digits
from 0 to 9 or letters from A to F).
In the 802.11b device documentation, the 64-bit encryption key is often called a 40-bit
encryption key. In practice, it is made up of 40 bits to be configured in the Residential
Gateway and the stations, and 24 bits that are generated automatically and
transmitted in the message exchanged.
Similarly, the 128-bit encryption key is often called a 104-bit encryption key.
Note:
The selected key will be used in all cases by the Residential Gateway to encrypt
the messages to be sent. The message sent is made up of encrypted data and
the key number (key N° 1, 2, 3 or 4) used for encryption. For the station to be
able to decrypt the message received, it must therefore have the same key
configured with the same number.