SonicWALL TZ 190 Manuale Utente

Try to place the wireless security appliance in a direct line with other wireless components. 
Best performance is achieved when wireless components are in direct line of sight with 
each other. 

Building construction can make a difference on wireless performance. Avoid placing the 
wireless security appliance near walls, fireplaces, or other large solid objects. Placing the 
wireless security appliance near metal objects such as computer cases, monitors, and 
appliances can affect performance of the unit. 

Metal framing, UV window film, concrete or masonry walls, and metallic paint can reduce 
signal strength if the wireless security appliance is installed near these types of materials. 

Installing the wireless security appliance in a high place can help avoid obstacles and 
improve performance for upper stories of a building. 

Neighboring wireless networks and devices can affect signal strength, speed, and range of 
the wireless security appliance. Also, devices such as cordless phones, radios, microwave 
ovens, and televisions may cause interference on the wireless security appliance. 

The antennas on the wireless security appliance can be adjusted for the best radio reception. 
Begin with the antennas pointing straight up, and then adjust as necessary. Note that certain 
areas, such as the area directly below the wireless security appliance, get relatively poor 
reception. Pointing the antenna directly at another wireless device does not improve reception. 
Do not place the antennas next to metal doors or walls as this can cause interference. 

Users connecting to the WLAN or connecting through the SonicWALL GroupVPN are not 
counted towards the node enforcement on the SonicWALL. Only users on the LAN and non-
Wireless zones on the Opt port are counted towards the node limit. 

The Station Status table lists all the wireless nodes connected.

The SonicWALL wireless security appliance networking protocol provides native MAC address 
filtering capabilities. When MAC address filtering is enabled, filtering occurs at the 802.11 layer, 
wireless clients are prevented from authenticating and associating with the wireless access 
point. Since data communications cannot occur without authentication and association, access 
to the network cannot be granted until the client has given the network administrator the MAC 
address of their wireless network card. 

Enabling WiFiSec Enforcement on the wireless security appliance enforces the use of IPsec-
based VPN for access from the WLAN to the WAN or LAN, and provides access from the WLAN 
to the WAN independent of WGS. Access from one wireless client to another is configured on 
the Wireless > Advanced page where you can disable or enable access between wireless 
clients.