D-Link DSL-2877AL Dual Band Wireless AC750 VDSL/ADSL2+ Modem Router User Manual
Section 4 - Knowledge Base
Page 104
Knowledge Base
Networking Basics
Check your IP address
After you installed your new network or wireless adapter, by default, the TCP/IP
settings should be set to obtain an IP address automatically from a DHCP server. By
default the DHCP server option on your router is enabled.
To verify your IP address, please follow the steps below:
Click on the Windows
Start
button and open the
Run
application.
In the
Open
box type
cmd
and click
OK
.
At the command prompt, type in the command
ipconfig
and press
Enter
. This
will display the
IP address
,
Subnet Mask
, and the
Default Gateway
of your
adapter. If the address is
0.0.0.0
, it means that your network adapter did not
receive an IP address from the DHCP server. Check your adapter installation,
security settings, and the settings on your router. Some firewall software
programs may block a DHCP request on newly installed adapters.
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D-Link DSL-2877AL Dual Band Wireless AC750 VDSL/ADSL2+ Modem Router User Manual
Section 4 - Knowledge Base
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Statically Assign an IP address
If you are not using a DHCP capable gateway/router, or you need to assign a static IP
address, please follow the steps below:
Click on the Windows
Start
button and navigate to the
Control Panel
>
Network and Sharing Center
and click on the
Change Adapter Settings
option on the left panel.
Right-click on the
Local Area Connection
, which represents your network
adapter, and selects
Properties
.
Select the
Internet Protocol Version 4 (TCP/IPv4)
option and click on the
Properties
button.
Select
Use the following IP address
and enter an IP address that is on the
same subnet as your router. For example: If your router is running on the IP
address of
192.168.1.1
, use any IP address from
192.168.1.2
to
192.168.69.254
. Use the Subnet Mask of
255.255.255.0
. Set Default
Gateway the same as the LAN IP address of your router. Set Preferred DNS
server IP address the same as the LAN IP address of your router. The
Secondary DNS is not needed at this stage.
Click the
OK
button twice to return to the
Network Connections
window.
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D-Link DSL-2877AL Dual Band Wireless AC750 VDSL/ADSL2+ Modem Router User Manual
Section 4 - Knowledge Base
Page 106
Wireless Basics
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 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.
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.
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)
Bluetooth is the industry standard wireless technology used for WPAN. Bluetooth devices in WPAN operate in a range up to 30 feet away. Compared to WLAN the speed and
wireless operation range are both less than WLAN, but in retur
n it doesn‟t use nearly as much power which makes it ideal for personal devices, such as mobile phones, PDAs,
headphones, laptops, speakers, and other devices that operate on batteries.
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D-Link DSL-2877AL Dual Band Wireless AC750 VDSL/ADSL2+ Modem Router User Manual
Section 4 - Knowledge Base
Page 107
Who uses wireless?
Wireless technology has become so popular in rec
ent years that almost everyone is using it, whether it‟s for home, office, business, we have a wireless solution for it.
Home
Gives everyone at home broadband access.
Surf the web, check email, instant message, etc…
Gets rid of the cables around the house.
Simple and easy to use.
Small Office and Home Office
Stay on top of everything at home as you would at office.
Remotely access your office network from home.
Share Internet connection and printer with multiple computers.
No need to dedicate office space.
Where is wireless used?
Wireless technology is expanding everywhere not just at home or office. People like the freedom of mobility and it‟s becoming
so popular that more and more public facilities
now provide wireless access to attract people. The wire
less connection in public places is usually called “hotspots”.
Using a Wireless Cardbus Adapter with your laptop, you can access the hotspot to connect to Internet from remote locations like: Airports, Hotels, Coffee Shops, Libraries,
Restaurants, and Convention Centers.
Wireless network is easy to setup, but if you‟re installing it for the first time it could be quite a task not knowing where to start. That‟s why we‟ve put together a few setup steps
and tips to help you through the process of setting up a wireless network.
Tips
Here are a few things to keep in mind, when you install a wireless network.
Centralize your router or Access Point
Make sure you place the router/access point in a centralized location within your network for the best performance. Try to place the router/access point as high as possible in
the room, so the signal gets dispersed throughout your home. If you have a two-story home, you may need a repeater to boost the signal to extend the range.
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D-Link DSL-2877AL Dual Band Wireless AC750 VDSL/ADSL2+ Modem Router User Manual
Section 4 - Knowledge Base
Page 108
Eliminate Interference
Place home appliances such as cordless telephones, microwaves, and televisions as far away as possible from the router/access point. This would significantly reduce any
interference that the appliances might cause since they operate on same frequency.
Security
Don‟t
let your next-door neighbors or intruders connect to your wireless network. Secure your wireless network by turning on the WPA or WEP security feature on the router.
Refer to product manual for detail information on how to set it up.
Wireless Modes
There are basically two modes of networking:
Infrastructure
–
All wireless clients will connect to an access point or wireless router.
Ad-Hoc
–
Directly connecting to another computer, for peer-to-peer communication, using wireless network adapters on each computer, such as two or more wireless
network Cardbus adapters.
An Infrastructure network contains an Access Point or wireless router. All the wireless devices, or clients, will connect to the wireless router or access point.
An Ad-Hoc network contains only clients, such as laptops with wireless Cardbus adapters. All the adapters must be in Ad-Hoc mode to communicate.
Wireless Security
This section will show you the different levels of security you can use to protect your data from intruders. The router offers wireless security options like WPA/WPA2 PSK/EAP.
What is WPA?
WPA (Wi-Fi Protected Access) is a Wi-Fi standard that was designed to improve the security features of WEP (Wired Equivalent Privacy).
The 2 major improvements over WEP:
Improved data encryption through the Temporal Key Integrity Protocol (TKIP). TKIP scrambles the keys using a hashing algorithm and, by adding an integrity-
checking
feature, ensures that the keys haven‟t been tampered with. WPA2 is based on 802.11i and uses Advanced Encryption St
andard (AES) instead of TKIP.
User authentication, which is generally missing in WEP, through the extensible authentication protocol (EAP). WEP regulates access to a wireless network based on
a
computer‟s hardware
-specific MAC address, which is relatively simple to be sniffed out and stolen. EAP is built on a more secure public-key encryption system to
ensure that only authorized network users can access the network.
WPA-PSK/WPA2-PSK uses a passphrase or key to authenticate your wireless connection. The key is an alpha-numeric password between 8 and 63 characters long. The
password can include symbols (!?*&_) and spaces. This key must be the exact same key entered on your wireless router or access point.
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