D-Link Router DIR-300 User Manual

							
81D-Link DIR-300 User Manual
Section 11 - Connecting to an Unsecured Wireless Network
Connecting to an Unsecured Wireless Network
The following are step-by-step directions to set up an unsecured wireles\
s connection.
2. Go to the Network and Sharing Center window and click the 
Manage Network Connections link. 
1. Click on Properties.
          
						

							
8D-Link DIR-300 User Manual
Section 11 - Connecting to an Unsecured Wireless Network
3. Right-click  the Wireless  Network  Connection  entry  and  then  select 
Connect/Disconnect from the drop-down menu. 
4. Select  a  network  to  connect  to  in  the Select  a  network  to  connect to 
window in the Connect to a network wizard and then click the Connect 
button. 
5. Confirm  your  desire  to  connect  anyway  on  the  following Network 
Connection Status window.   
						

							
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Section 11 - Connecting to an Unsecured Wireless Network
6. The following Connect to a network wizard window displays the system 
progress. 
7. The following Successfully connected to dlink300 window in the  Connect 
to a network wizard is displayed. Choose to save to the network and/or 
start  the  new  connection  automatically. When  you  are  finished,  click  the 
Close button. 
8. The successful connection is displayed at the bottom of the Windows start 
up menu.  
						

							
8D-Link DIR-300 User Manual
Section 11 - Connecting to an Unsecured Wireless Network
9. Confirm  your  new  settings  by  calling  up  the  command  prompt  and  
then entering the ipconfig command. 
10.To  test  the  new  IP  address,  use  the  Ping  feature  of  the  command 
prompt.  
						

							
8D-Link DIR-300 User Manual
Section 1 - Troubleshooting
Troubleshooting
This chapter provides solutions to problems that can occur during the installation and operation of the DIR-300.  Read the following 
descriptions if you are having problems.  (The examples below are illustrated in Windows® XP.  If you have a different operating 
system, the screenshots on your computer will look similar to the following examples.)
1. Why can’t I access the web-based configuration utility?
When entering the IP address of the D-Link router (192.168.0.1 for example), you are not connecting to a website on the Internet 
or have to be connected to the Internet. The device has the utility built-in to a ROM chip in the device itself. Your computer must 
be on the same IP subnet to connect to the web-based utility. 
• Make sure you have an updated Java-enabled web browser. We recommend the following: 
• Internet Explorer 6.0 or higher 
• Netscape 8 or higher 
• Mozilla 1.7.12 (5.0) or higher 
• Opera 8. or higher 
• Safari 1.2 or higher (with Java 1.3.1 or higher) 
• Camino 0.8. or higher 
• Firefox 1.5 or higher 
• Verify physical connectivity by checking for solid link lights on the device. If you do not get a solid link light, try using a different 
cable or connect to a different port on the device if possible. If the computer is turned off, the link light may not be on.
• Disable any internet security software running on the computer. Software firewalls such as Zone Alarm, Black Ice, Sygate, Norton 
Personal Firewall, and Windows® XP firewall may block access to the configuration pages. Check the help files included with 
your firewall software for more information on disabling or configuring it. 
						

							
86D-Link DIR-300 User Manual
Section 1 - Troubleshooting
• Configure your Internet settings:
• Go to Start > Settings > Control Panel. Double-click the Internet Options Icon. From the Security tab, click the 
button to restore the settings to their defaults.
• Click the Connection tab and set the dial-up option to Never Dial a Connection. Click the LAN Settings button. 
Make sure nothing is checked. Click OK. 
• Go to the Advanced tab and click the button to restore these settings to their defaults. C\
lick OK three times.
• Close your web browser (if open) and open it.
• Access the web management. Open your web browser and enter the IP address of your D-Link router in the address bar. This 
should open the login page for your the web management. 
• If you still cannot access the configuration, unplug the power to the router for 10 seconds and plug back in. Wait about 30 seconds 
and try accessing the configuration. If you have multiple computers, try connecting using a different computer.
2. What can I do if I forgot my password?
If you forgot your password, you must reset your router. Unfortunately this process will change all your settings back to the factory 
defaults.
To reset the router, locate the reset button (hole) on the rear panel of the unit. With the router powered on, use a paperclip to hold the 
button down for 10 seconds. Release the button and the router will go through its reboot process. Wait about 30 seconds to access 
the router. The default IP address is 1.168.0.1. When logging in, the username is admin and leave the password box empty. 
						

							
8D-Link DIR-300 User Manual
Section 1 - Troubleshooting
3. Why can’t I connect to certain sites or send and receive emails when connecting through my router? 
If you are having a problem sending or receiving email, or connecting to secure sites such as eBay, banking sites, and Hotmail, 
we suggest lowering the MTU in increments of ten (Ex. 1492, 1482, 1472, etc). 
Note: AOL DSL+ users must use MTU of 1400. 
To  find  the  proper  MTU  Size,  you’ll  have  to  do  a  special  ping  of  the  destination  you’re  trying  to  go  to. A  destination  could  be 
another computer, or a URL. 
• Click on Start and then click Run. 
• Windows® ,  8,  and  Me  users  type  in command  (Windows®  NT,  2000,  and  XP  users  type  in cmd)  and  press 
Enter (or click OK). 
• Once the window opens, you’ll need to do a special ping. Use the\
 following syntax: 
 ping [url] [-f] [-l] [MTU value] 
Example: ping yahoo.com -f -l 1472  
						

							
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Section 1 - Troubleshooting
 
You should start at 1 and work your way down by 10 each time. Once you get a reply, go up by  until you get a fragmented 
packet. Take that value and add 28 to the value to account for the various TCP/IP headers. For example, lets say that 1452 was the 
proper value, the actual MTU size would be 1480, which is the optimum for the network we’re working with (1452+28=1480). 
Once you find your MTU, you can now configure your router with the proper MTU size. 
To change the MTU rate on your router follow the steps below: 
• Open your browser, enter the IP address of your router (192.168.0.1) and click OK. 
• Enter your username (admin) and password (blank by default). Click OK to enter the web configuration page for 
the device. 
• Click on Setup and then click Manual Configure.  
• To change the MTU enter the number in the MTU field and click the Save Settings button to save your settings. 
• Test your email. If changing the MTU does not resolve the problem, continue changing the MTU in increments of 
ten. 
  
						

							
8D-Link DIR-300 User Manual
Appendix A - Wireless Basics
D-Link wireless products are based on industry standards to provide easy-to-use and compatible high-speed wireless connectivity 
within your home, business or public access wireless networks. Strictly adhering to the IEEE standard, the D-Link wireless family 
of products will allow you to securely access the data you want, when and where you want it. You will be able to enjoy the freedom 
that wireless networking delivers.
A wireless local area network (WLAN) is a cellular computer network that transmits and receives data with radio signals instead 
of  wires. Wireless LANs  are used  increasingly  in  both  home and  office  environments, and  public areas such  as  airports, coffee 
shops and universities. Innovative ways to utilize WLAN technology are helping people to work and communicate more efficiently. 
Increased mobility and the absence of cabling and other fixed infrastructure have proven to be beneficial for many users. 
Wireless  users  can  use  the  same  applications  they  use  on  a  wired  network.  Wireless  adapter  cards  used  on  laptop  and  desktop 
systems support the same protocols as Ethernet adapter cards. 
Under many circumstances, it may be desirable for mobile network devices to link to a conventional Ethernet LAN in order to 
use servers, printers or an Internet connection supplied through the wired LAN. A Wireless Router is a device used to provide this 
link.
Wireless Basics 
						

							
0D-Link DIR-300 User Manual
Appendix A - Wireless Basics
What is Wireless?
Wireless or Wi-Fi technology is another way of connecting your computer to the network without using wires. Wi-Fi uses radio 
frequency to connect wirelessly, so you have the freedom to connect computers anywhere in your home or office network.
Why D-Link Wireless? 
  
D-Link is the worldwide leader and award winning designer, developer, and manufacturer of networking products. D-Link delivers 
the performance you need at a price you can afford. D-Link has all the products you need to build your network.
How does wireless work? 
  
Wireless works similar to how cordless phone work, through radio signals to transmit data from one point A to point B. But wireless 
technology has restrictions as to how you can access the network. You must be within the wireless network range area to be able to 
connect your computer. There are two different types of wireless networks Wireless Local Area Network (WLAN), and Wireless 
Personal Area Network (WPAN).
Wireless Local Area Network (WLAN)
In a wireless local area network, a device called an Access Point (AP) connects computers to the network. The access point has a 
small antenna attached to it, which allows it to transmit data back and forth over radio signals. With an indoor access point as seen 
in the picture, the signal can travel up to 300 feet. With an outdoor access point the signal can reach out up to 30 miles to serve 
places like manufacturing plants, industrial locations, college and high school campuses, airports, golf courses, and many other 
outdoor venues.
Wireless Personal Area Network (WPAN)