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Page 41 / 134 Scroll up to view Page 36 - 40
NETGEAR RangeMax™ Dual Band Wireless-N Router WNDR3300 Reference Manual
Safeguarding Your Network
2-17
v1.0, February 2008
Restricting Wireless Access by MAC Address
When a Wireless Card Access List is configured and enabled, the router checks the MAC address
of any wireless device attempting a connection and allows only connections to computers
identified on the trusted computers list.
The Wireless Card Access List displays a list of wireless computers that you allow to connect to
the router based on their MAC addresses. These wireless computers must also have the correct
SSID and wireless security settings to access the wireless router.
The MAC address is a network device’s unique 12-character physical address, containing the
hexadecimal characters 0–9, a–f, or A–F only, and separated by colons (for example,
00:09:AB:CD:EF:01). It can usually be found on the bottom of the wireless card or network
interface device. If you do not have access to the physical label, you can display the MAC address
using the network configuration utilities of the computer. In WindowsXP, for example, typing the
ipconfig/all
command in an MSDOS command prompt window displays the MAC address as
Physical Address. You might also find the MAC addresses in the router’s Attached Devices screen.
To restrict access based on MAC addresses:
1.
Select
Wireless Settings
under Advanced in the main menu.
2.
In the Wireless Settings screen, click
Setup Access List
to display the Wireless Card Access
List.
Figure 2-9
Page 42 / 134
NETGEAR RangeMax™ Dual Band Wireless-N Router WNDR3300 Reference Manual
2-18
Safeguarding Your Network
v1.0, February 2008
3.
Click
Add
to add a wireless device to the wireless access control list. The Wireless Card
Access Setup screen opens and displays a list of currently active wireless cards and their
Ethernet MAC addresses.
4.
If the computer you want appears in the Available Wireless Cards list, you can select the radio
button of that computer to capture its MAC address; otherwise, you can manually enter a name
and the MAC address of the authorized computer. You can usually find the MAC address on
the bottom of the wireless device.
5.
Click
Add
to add this wireless device to the Wireless Card Access List. The screen changes
back to the list screen.
6.
Repeat
step 3
through
step 5
for each additional device you want to add to the list.
Figure 2-10
Tip:
You can copy and paste the MAC addresses from the router’s Attached Devices
screen into the MAC Address field of this screen. To do this, configure each
wireless computer to obtain a wireless link to the router. The computer should
then appear in the Attached Devices screen.
Page 43 / 134
NETGEAR RangeMax™ Dual Band Wireless-N Router WNDR3300 Reference Manual
Safeguarding Your Network
2-19
v1.0, February 2008
7.
Select the
Turn Access Control On
check box.
8.
Click
Apply
to save your Wireless Card Access List settings.
Now, only devices on this list are allowed to wirelessly connect to the WNDR3300 router.
Changing the Administrator Password
The default password for the router’s Web Configuration Manager is
password
. NETGEAR
recommends that you change this password to a more secure password.
Note:
When configuring the router from a wireless computer whose MAC address is
not in the Trusted PC list, if you select
Turn Access Control On
, you lose
your wireless connection when you click
Apply
. You must then access the
wireless router from a wired computer or from a wireless computer that is on
the access control list to make any further changes.
Warning:
MAC address filtering adds an obstacle against unwanted access to your
network by the general public. However, because your trusted MAC
addresses appear in your wireless transmissions, an intruder can read them
and impersonate them. Do not rely on MAC address filtering alone to secure
your network.
Tip:
Before changing the router password, back up your configuration settings with the
default password of
password
. If you save the settings with a new password, and
then you later forget the new password, you will have to reset the router back to the
factory defaults, and log in using the default password of
password
. This means you
will have to re-enter all the router configuration settings. For information about how
to back up your settings, see
“Backing Up and Restoring the Configuration” on
page 6-8
.
Page 44 / 134
NETGEAR RangeMax™ Dual Band Wireless-N Router WNDR3300 Reference Manual
2-20
Safeguarding Your Network
v1.0, February 2008
To change the administrator password:
1.
On the main menu, under Maintenance, select
Set Password
to display the Set Password
screen.
2.
To change the password, first enter the old password, then enter the new password twice.
3.
Click
Apply
.
Backing Up Your Configuration
The configuration settings of the WNDR3300 router are stored within the router in a configuration
file. You can back up (save) this file and retrieve it later. NETGEAR recommends that you save
your configuration file after you complete the configuration. If the router fails or becomes
corrupted, or an administrator password is lost, you can easily re-create your configuration by
restoring the configuration file.
For instructions on saving and restoring your configuration file, see
“Managing the Configuration
File” on page 6-7
.
Figure 2-11
Tip:
Before saving your configuration file, change the administrator password to the
default,
password
. Then change it again after you have saved the configuration file.
If you save the file with a new password, and then you later forget the new
password, you will have to reset the router back to the factory defaults and log in
using the default password of
password
. This means you will have to re-enter all the
router configuration settings.
Page 45 / 134
NETGEAR RangeMax™ Dual Band Wireless-N Router WNDR3300 Reference Manual
Safeguarding Your Network
2-21
v1.0, February 2008
Understanding Your Firewall
Your RangeMax Dual Band Wireless-N Router WNDR3300 contains a true firewall to protect
your network from attacks and intrusions. A firewall is a device that protects one network from
another while allowing communication between the two. Using a process called Stateful Packet
Inspection, the firewall analyzes all inbound and outbound traffic to determine whether or not it
will be allowed to pass through.
By default, the firewall allows any outbound traffic and prohibits any inbound traffic except for
responses to your outbound traffic. However, you can modify the firewall’s rules to achieve the
following behavior:
•
Blocking sites
. Block access from your network to certain Web locations based on Web
addresses and Web address keywords. This feature is described in
“Blocking Access to
Internet Sites” on page 3-1
.
•
Blocking services
. Block the use of certain Internet services by specific computers on your
network. This feature is described in
“Blocking Access to Internet Services” on page 3-3
.
•
Scheduled blocking
. Block sites and services according to a daily schedule. This feature is
described in
“Scheduling Blocking” on page 3-5
.
•
Allow inbound access to your server
. To allow inbound access to resources on your local
network (for example, a Web server or remote desktop program), you can open the needed
services by configuring port forwarding as described in
“Allowing Inbound Connections To
Your Network” on page 5-1
.
•
Allow certain games and applications to function correctly
. Some games and applications
need to allow additional inbound traffic to function. Port triggering can dynamically allow
additional service connections, as described in
“Allowing Inbound Connections To Your
Network” on page 5-1
. Another feature to solve application conflicts with the firewall is
Universal Plug and Play (UPnP), described in
“Using Universal Plug and Play” on page 5-12
.

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