Ericsson WCDMA/HSDPA User Manual

Configuration and Management 
 

The Whitelist is a list of up to 20 WLAN client MAC (Media Access Control) 
addresses that are allowed to access the Ericsson W20. A MAC address is 
the unique hardware number of a device. It has the form of 
xx:xx:xx:xx:xx:xx, where x is either a letter A – F or a number. 

To find out about the MAC address of a PC using Microsoft Windows, open 
a command prompt and type ipconfig /all. A list of system properties 
is displayed. The MAC address is found on the Physical Address row. 

 

To add a client to the whitelist, type the MAC address of the client in the 
Whitelist field on the Wireless LAN page and click 

. 

Click 

 to save the settings. 

2.7 DHCP 

Server 

The Ericsson W20 incorporates a DHCP (Dynamic Host Configuration 
Protocol) server that assigns dynamic IP addresses to local clients. The IP 
addresses are collected from a predefined range of available addresses. 
The default address range is suitable for most local networks. 

The DHCP server uses the concept of a "lease”, that is the amount of time 
that a given IP address will be valid for a specific device. If the lease time 
expires and the device is still connected, the lease is automatically 
renewed. 

 

 
 

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