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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Reference Manual for the Model CG814M Wireless Cable Modem Gateway

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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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Protecting Your Network

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•

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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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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Protecting Your Network

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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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