D-Link Router DIR-120 User Manual

DIR-120 Ethernet Broadband Router 
 D-Link DIR-120 User Manual                                                      
35 
DHCP Server Settings Dynamic Host Configuration Protocol (DHCP) allows the gateway to automatically obtain the IP address 
from a DHCP server on the service provider’s network. The service provider assigns a global IP address 
from a pool of addresses available to the service provider. Typically the IP address assigned has a long lease 
time, so it will likely be the same address each...

DIR-120 Ethernet Broadband Router 
 D-Link DIR-120 User Manual                                                      
36 
Printer Setup Use the Printer Setup Wizard to configure the Router’s USB Printer connection. To establish the connection to a USB equipped printer, click the Printer Setup link to view the 
Printer Setup Wizard launch menu. Follow the instructions below to install the printer driver on your computer. Some printers, especially very recent release printers, might 
require the Printer...

DIR-120 Ethernet Broadband Router 
 D-Link DIR-120 User Manual                                                      
37 
5. The first Printer Setup Wizard menu lists the steps used for intallation. Click the Next button to detect the printer. 
 
 
 
 
 
 
 
 
  

DIR-120 Ethernet Broadband Router 
 D-Link DIR-120 User Manual                                                      
38 
6. The printer should be detected immediately. The model name will be displayed if detected. If no printer is detected a warning tells you the printer installation cannot be 
completed. Check the cable connections and make sure the printer is powered on. Click Next if a printer is detected. 
 
 
 
 
 
 
 
 
 
  

DIR-120 Ethernet Broadband Router 
 D-Link DIR-120 User Manual                                                      
39 
7. It is now necessary to install the correct printer driver on your computer. Click the Next button to launch the file. 
 
 
 
 
 
 
 
 
  

DIR-120 Ethernet Broadband Router 
 D-Link DIR-120 User Manual                                                      
40 
8. A setup will launch or attempt to launch on your computer. Often the browser settings prevent the file from launching until permission is granted. This file must be 
executed to install the printer driver. In Windows Internet Explorer  permission can be granted to launch downloded application. See the example from Windows 
Internet Explorer as seen in XP below. If asked to insert...

DIR-120 Ethernet Broadband Router 
 D-Link DIR-120 User Manual                                                      
41 
Advanced Configuration 
The Advanced directory tab offers seven configuration menus, Port Forwarding, Application Rules, Access Control, Website Filter, Firewall Settings, Advanced 
Network, and QoS Engine. Click the corresponding link in the left panel of the window. Port Forwarding is the first menu listed and the first to appear when accessing the 
Advanced directory. 
 
Advanced...

DIR-120 Ethernet Broadband Router 
 D-Link DIR-120 User Manual                                                      
42 
Port Forwarding 
 
Port Forwarding Rules menu 
To enable an already existing Port Forwarding Rule, click on its corresponding 
checkbox and configure the appropriate fields listed below. To configure other 
Port Forwarding Rules for the Router, configure the following fields and click 
the Save Settings button at the top of the window. 
 To view the following window, click on the...

DIR-120 Ethernet Broadband Router 
 D-Link DIR-120 User Manual                                                      
43 
Application Rules 
 
Application Rule menu 
This window is used to configure applications that require multiple 
connections, such as Internet Telephony, video conferencing, and Internet 
gaming. The following window lists six Special Applications that commonly 
use more than one connection. To configure one of these applications, tick its 
corresponding checkbox and then modify the...

DIR-120 Ethernet Broadband Router 
 D-Link DIR-120 User Manual                                                      
44 
Access Control 
 
AC Filtering menu 
 
Access Control, or MAC filtering, is a basic security measure that should be used on 
any network that is exposed to a security risk. A packet filter system examines data 
packets and scrutinizes them in order to control network access. Filtering rules 
determine whether packets are passed through the Router from either side of the 
gateway. The...