User guide

Troubleshooting Wireless Connectivity
Chapter 7: Configuring a Wireless Network 135
Troubleshooting Wireless Connectivity
I cannot connect to the WLAN from a wireless station. What should I do?
• Check that the SSID configured on the station matches the ZoneAlarm router's
SSID. The SSID is case-sensitive.
• Check that the encryption settings configured on the station (encryption mode
and keys) match the ZoneAlarm router's encryption settings.
• If MAC filtering is enabled, verify that the MAC address of all stations is listed
in the Network Objects page (see Viewing and Deleting Network Objects on
page
104).
• Check that the wireless card region matches the access point region.
• Check the wireless card supports the wireless standard that you configured.
How do I test wireless reception?
• Look at the Wireless page, and check for excessive errors or dropped packets.
• Look at the My Computers page, to see information for specific wireless stations,
such as the number of transmission errors, and the current reception power of
each station.
• On the wireless station, open a command window and type ping my.firewall. If
you see a large number of dropped packets, you are experiencing poor reception.
Wireless reception is poor. What should I do?
• Adjust the angle of the antennas, until the reception improves. The antennas
radiate horizontally in all directions.
• If both antennas are connected to the ZoneAlarm router, check that the Antenna
Selection parameter in the WLAN's advanced settings is set to Automatic (see
Manually Configuring a Wireless Network on page
122).
• Relocate the ZoneAlarm router to a place with better reception, and avoid
obstructions, such as walls and electrical equipment. For example, try mounting
the router 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.