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Reference Manual for the Wireless Cable Modem Gateway CG814WG v2
Protecting Your Network
5-1
Chapter 5
Protecting Your Network
This chapter describes how to use the firewall features of the CG814WG v2 Wireless Cable
Modem Gateway to protect your network.
Protecting Access to Your CG814WG v2 Gateway
For security reasons, the gateway has its own user name and password. Also, after a period of
inactivity for a set length of time, the administrator login will automatically disconnect. When
prompted, enter
admin
for the gateway User Name and
password
for the gateway Password. You
can use procedures below to change the gateway's password and the amount of time for the
administrator’s login timeout.
Note:
The user name and password are not the same as any user name or password your may use
to log in to your Internet connection.
NETGEAR recommends that you change this password to a more secure password. The ideal
password should contain no dictionary words from any language, and should be a mixture of both
upper and lower case letters, numbers, and symbols.
Your password can be up to 30 characters.
Procedure 5-1:
Changing the Built-In Password
1.
Log in to the gateway at its default LAN address of
with its default User
Name of
admin
, default password of
password
, or using whatever Password and LAN
address you have chosen for the gateway.
Figure 5-1:
Log in to the gateway
Page 32 / 122
Reference Manual for the Wireless Cable Modem Gateway CG814WG v2
5-2
Protecting Your Network
2.
From the main menu of the browser interface, under the Maintenance heading, select Set
Password to bring up the dialog box shown below.
Figure 5-2:
Set Password dialog box
3.
To change the password, first enter the old password, and then enter the new password twice.
4.
Click
Apply
to save your changes.
Note:
After changing the password, you will be required to log in again to continue the
configuration.
If you have backed up the gateway settings previously, you should do a new
backup so that the saved settings file includes the new password.
Blocking Keywords, Sites, and Services
The
gateway provides a variety of options for blocking Internet based content and
communications services.
With its content filtering feature, the CG814WG v2 Gateway
prevents objectionable content from reaching your PCs. The CG814WG v2 allows you to control
access to Internet content by screening for keywords within Web addresses.
It also has the
capability to block access to all sites except those that are explicitly allowed.
Key content
filtering options include:
•
Blocking access from your LAN to Internet locations that contain keywords that your specify.
•
Blocking access to Web sites that you specify as off-limits.
•
Allowing access to only Web sites that you specify as allowed.
The section below explains how to configure your
gateway to perform these functions.
Page 33 / 122
Reference Manual for the Wireless Cable Modem Gateway CG814WG v2
Protecting Your Network
5-3
Blocking Keywords and Domains
The CG814WG v2 Gateway allows you to restrict access to Internet content based on functions
such as Web address keywords and Web domains.
A domain name is the name of a particular Web site. For example, for the address
www.NETGEAR.com, the domain name is NETGEAR.com.
1.
Log in to the gateway at its default LAN address of
with its parent default
User Name of
superuser
, default password of
password
, or using whatever Password and
LAN address you have chosen for the gateway in parent mode.
2.
Click on the Block Sites link of the Content Filtering menu.
Figure 5-3:
Block Sites menu
Note:
The Block Sites feature must be configured while logged in as a parent.
Page 34 / 122
Reference Manual for the Wireless Cable Modem Gateway CG814WG v2
5-4
Protecting Your Network
3.
To enable keyword blocking or Domain Blocking, check the appropriate Enable box.
4.
Enter Keywords into the Keyword List by typing then in the Add Keyword box, then, click
Add Keyword.
Some examples of Keyword applications follow:
•
If the keyword “XXX” is specified, the URL <http://www.badstuff.com/xxx.html> is
blocked.
•
If the keyword “.com” is specified, only Web sites with other domain suffixes (such as
.edu or .gov) can be viewed.
•
Enter the keyword “.” to block all Internet browsing access.
Up to eight entries are supported in the Keyword list.
5.
Enter Domains into the Domain List by typing then in the Add Domain box, then, click Add
Domain.
If the domain “badstuff.com” is specified, the URL <http://www.badstuff.com/xxx.html> is
blocked, along with all other urls in the badstuff.com site.
Up to eight entries are supported in the Keyword list.
6.
To block access to the domains in the Domain List, select Deny Domains.
To allow access to only the domains in the Domain List, select Allow Domains. If the domain
“goodstuff.com” is specified, you will be able to access only sites on the goodstuff site.
7.
To delete a keyword or domain, select it from the list, click Remove Keyword or Remove
Domain.
8.
Click
Apply
to save your settings.
Using MAC Filtering
By default, any PC will be allowed access to the Internet through your Gateway. MAC Filtering
allows you to block access to the Internet to any PC on your LAN based on the hardware address
of its ethernet or wireless adapter: the MAC address.
Note:
The MAC Filtering feature must be configured while logged in as a parent.
Page 35 / 122
Reference Manual for the Wireless Cable Modem Gateway CG814WG v2
Protecting Your Network
5-5
1.
Log in to the gateway at its default LAN address of
with its parent default
User Name of
superuser
, default password of
password
, or using whatever Password and
LAN address you have chosen for the gateway in parent mode.
2.
Click the MAC Filtering link on the Advanced menu. At the top of the page is a list of
Trusted
Devices
that are currently connected to the Gateway.
To add a device to the MAC Filtering list:
1.
Enter the MAC address:
•
If the desired device is in the
Trusted
Devices
table, click the radio button of
that PC to capture is MAC address.
•
If the desired device is not in the
Trusted
Devices
table, you can manually enter
the MAC address of the PC you wish to
block.
•
If no Device Name automatically
appears, you can type a descriptive name
for the PC that you are adding.
2.
When you have finished entering the MAC
address, click
Add
, and click
Apply
.
To delete a device from the MAC Filtering
list:
1.
Select the MAC address of the PC you want
to delete from the list.
2.
Click
Delete
to delete the entry.
3.
Click
Apply
to activate the settings.
Figure 5-4:
MAC Filtering menu

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