User Manual Part 1
Table Of Contents
- Check Point Safe@Office User Guide 8.0
- Copyright & Trademarks
- Contents
- About This Guide
- Introduction
- About Your Check Point Safe@Office Appliance
- Safe@Office 500 Product Family
- Product Features
- Wireless Features
- Optional Security Services
- Software Requirements
- Getting to Know Your Safe@Office 500 Appliance
- Getting to Know Your Safe@Office 500W Appliance
- Getting to Know Your Safe@Office 500 ADSL Appliance
- Getting to Know Your Safe@Office 500W ADSL Appliance
- Contacting Technical Support
- Safe@Office Security
- Installing and Setting Up Safe@Office
- Getting Started
- Configuring the Internet Connection
- Managing Your Network
- Using Bridges
- Configuring High Availability
- Using Traffic Shaper
- Working with Wireless Networks
- Viewing Reports
- Viewing Logs
- Setting Your Security Policy
Troubleshooting Wireless Connectivity
Chapter 10: Working with Wireless Networks 303
• If both antennas are connected to the Safe@Office appliance, check that the
Antenna Selection parameter in the primary WLAN's advanced settings is set to
Automatic (see Manually Configuring a Wireless Network on page 280).
• Relocate the
Safe@Offic
e appliance to a place with better reception, and avoid
obstructions, such as walls and electrical equipment. For example, try mounting
the appliance in a high place with a direct line of sight to the wireless stations.
• Check for interference with nearby electrical equipment, such as microwave
ovens and cordless or cellular phones.
• Check the Transmission Power parameter in the primary WLAN's advanced
settings.
• Make sure that you are not using two access points in close proximity and on the
same frequency. For minimum interference, channel separation between nearby
access points must be at least 25 MHz (5 channels).
• The Safe@Office appliance supports XR (Extended Range) technology. For best
range, enable XR mode in the wireless network's advanced settings, and use XR-
enabled stations.
• Range outdoors is normally much higher than indoors, depending on
environmental conditions.
Note: You can observe any changes in the wireless reception in the My Computers
page. Make sure to refresh the page after making a change.
Note: Professional companies are available for help in setting up reliable wireless
networks, with access to specialized testing equipment and procedures.
There are excessive collisions between wireless stations. What should I do?
If you have many concurrently active wireless stations, there may be collisions between
them. Such collisions may be the result of a "hidden node" problem: not all of the stations
are within range of each other, and therefore are "hidden" from one another. For example,
if station A and station C do not detect each other, but both stations detect and are detected
by station B, then both station A and C may attempt to send packets to station B
simultaneously. In this case, the packets will collide, and Station B will receive corrupted
data.
The solution to this problem lies in the use of the RTS protocol. Before sending a certain
size IP packet, a station sends an RTS (Request To Send) packet. If the recipient is not