Avaya Wireless AP-3 User Manual

Avaya Wireless AP-3 User’s Guide                                                                                 4-73

The AP can filter these protocols in the wireless-to-Ethernet direction, the 
Ethernet-to-wireless direction, or in both directions. Click Edit and use the 
Status field to Enable or Disable the filter.

Port-based filtering enables you to control wireless user access to 
network services by selectively blocking TCP/UDP protocols through the 
AP. A user specifies a Protocol Name, Port Number, Port Type (TCP, 
UDP, or TCP/UDP), and filtering interfaces (Wireless only, Ethernet only, 
all interfaces, or no interfaces) in order to block access to services, such 
as Telnet and FTP, and traffic, such as NETBIOS and HTTP. 

For example, an AP with the following configuration would discard frames 
received on its Ethernet interface with a UDP destination port number of 
137, effectively blocking NETBIOS Name Service packets.

UDP

137

NETBIOS
Name 
Service

Ethernet

Enable