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Reference Manual for the Model CG814M Wireless Cable Modem Gateway
Protecting Your Network
4-1
Chapter 4
Protecting Your Network
This chapter describes how to use the firewall features of the CG814M Wireless Cable Modem
Gateway to protect your network.
Protecting Access to Your CG814M 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.
Changing the Built-In Password
1.
Log in to the gateway at its default LAN address of http://192.168.0.1 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 4-1: Log in to the gateway
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Page 42 / 102
Reference Manual for the Model CG814M Wireless Cable Modem Gateway
4-2
Protecting Your Network
2.
From the Main Menu of the browser interface, under the Maintenance heading, select Set
Password to bring up the menu shown in
Figure 4-2
.
Figure 4-2: Set Password menu
3.
To change the password, first enter the old password, and then enter the new password twice.
4.
If you would like to reset your gateway to its factory default settings select Yes for Restore
Factory Defaults. This will remove all configuration information you have entered.
5.
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 CG814M Gateway prevents
objectionable content from reaching your PCs. The CG814M 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 explicitely 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.
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Reference Manual for the Model CG814M Wireless Cable Modem Gateway
Protecting Your Network
4-3
•
Allowing access to only web sites that you specify as allowed.
•
Filtering of Proxy servers, Cookies, Java, ActiveX and Popup Windows
The section below explains how to configure your
gateway to perform these functions.
Block Keywords and Domains
The CG814M 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.
Log in to the gateway at its default LAN address of http://192.168.0.1 with its default User Name
of
admin
, default password of
password
, or using whatever Password and LAN address you have
chosen for the gateway.
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Reference Manual for the Model CG814M Wireless Cable Modem Gateway
4-4
Protecting Your Network
1.
Click on the Block Sites link of the Content Filtering menu.
Figure 4-3: Block Sites menu
2.
To enable keyword blocking or Domain Blocking, check the appropriate Enable box.
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Reference Manual for the Model CG814M Wireless Cable Modem Gateway
Protecting Your Network
4-5
3.
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 websites with other domain suffixes (such as .edu
or .gov) can be viewed.
•
Enter the keyword “.” to block all Internet browsing access.
Up to 8 entries are supported in the Keyword list.
4.
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 8 entries are supported in the Keyword list.
5.
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.
6.
To delete a keyword or domain, select it from the list, click Remove Keyword or Remove
Domain.
7.
Configure the times when access rules apply in the Schedule section.
8.
Click Apply to save your settings.
Blocking Services
The CG814M Gateway allows you to block access to specific traffic such as proxies, cookies, Java
Applets, ActiveX and popup windows.
To enable filtering of services, from the Content Filtering section of the Main Menu, select
Services. Check the Enable box for whichever service you would like to block and click Apply.
Proxy
The proxy filter will prevent PCs from using a proxy server to surf the web. A proxy server could
be used to bypass parental control features because the port number for a proxy is usually 8080.
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