4.7 IEEE
802.11b WEP Security
The IEEE 802.11b standard includes a Shared Key data privacy mechanism, called ‘Wired Equivalent Privacy’.
Features of WEP are:
•
Data encryption using a 40 bit shared key
•
No key distribution mechanism. The shared key (password) must be distributed manually to all personnel and either be
remembered or stored somewhere on the hard disk.
•
Simple authentication of clients based on hardware address.
4.8 More about Cells
Each Access Point in the network forms the centre of a cell, or BSS. The Cells should overlap slightly to guarantee seamless
wireless connectivity everywhere. Nearby Access Points should preferably send and receive on different channels for maximum
throughput.
Creating a cell plan for your site can be complicated, and is usually done by experts employing special measuring equipment.
Furthermore, the radio channels you may use depend on both the capabilities of the PC-Cards you are deploying, as well as the
regulations in your area. The following table may be of help:
Regulatory
Domain
Area
Permissible
Channels
FCC
United States
1 – 11
RSS
Canada
1 – 11
ETSI
Europe except
Spain and France
1 – 13
TELEC
Japan
1-14
4.9 Compatibility
The APManager utility version 3.0.0.14EN is compatible with the WX-1500SB and WX-1520EN Access Points, while 3.0.0.15SB
is for WX-1500SB and WX-1520SB.
