User guide

Overview
Chapter 10: Working with Wireless Networks 305
Chapter 10
This chapter describes how to configure wireless internal networks.
This chapter includes the following topics:
Overview .................................................................................................. 305
Configuring Wireless Networks ............................................................... 314
Troubleshooting Wireless Connectivity ................................................... 342
Overview
Your Safe@Office wireless appliance features a built-in 802.11b/g/n access point that is
tightly integrated with the firewall and VPN.
Safe@Office 1000NW wireless appliances support the latest 802.11n standard (up to 300
Mbps) which integrates multiple-input and multiple-output (MIMO) features. MIMO is a
technology that uses multiple antennas to coherently resolve more information than
possible using a single antenna, and reduces problems with reflected signals. In addition,
MIMO includes Spatial Division Multiplexing (SDM), which spatially multiplexes
independent data streams that are transferred simultaneously within one spectral channel of
bandwidth. MIMO SDM can significantly increase data throughput, as the number of
resolved special data streams is increased.
In addition to MIMO, 802.11n also supports 40MHz channels, a channel width that is
double the 20MHz available in previous 802.11 PHYs, allowing for doubling of the PHY
data rate over a single 20 MHz channel.
Safe@Office 1000NW appliances are backwards compatible with the older 802.11b
standard (up to 11 Mbps) and 802.11g standard (up to 54 Mbps), so that both new and old
adapters of these standards are interoperable. Safe@Office 500W appliances also support a
special Super G mode that allows reaching a throughput of up to 108 Mbps with Super G
Working with Wireless Networks