Wireless Cable Voice Gateway Model CVG834G Reference Manual

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Wireless Configuration

v2.0, November 2007

Protecting Your Network

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v2.0, November 2007

Chapter 3

Protecting Your Network

This chapter describes how to control access to your gateway and how to use the firewall features

of the gateway to protect your network.

Changing the Default Password

For security reasons, the gateway has its own user name and password. The administrator user

name is

admin

, with the default password of

password

. After a period of inactivity for a set length

of time, the administrator login automatically disconnects. You can change the password, and you

can change the amount of time for the administrator login timeout.

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.

To change the default password:

1.

Log in to the gateway by entering the 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.

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.

Figure 3-1

Wireless Cable Voice Gateway Model CVG834G Reference Manual

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Protecting Your Network

v2.0, November 2007

2.

Under the Maintenance heading, select Set Password. The Set Password screen appears:

3.

To change the password, first enter the old password, and then enter the new password twice.

4.

Click

Apply

to save your changes.

Logs

A log is a detailed record of the denial of service (DoS) attacks directed at your network. You can

view the logs here, or you can use e-mail notification to view the logs (see

“Viewing and Emailing

Event Logs” in Chapter 4

).

From the main menu, under the Content Filtering heading, select Logs. The Logs screen

appears:

Figure 3-2

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.

Figure 3-3

Wireless Cable Voice Gateway Model CVG834G Reference Manual

Protecting Your Network

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v2.0, November 2007

Blocking Keywords, Sites and Services

The gateway provides a variety of options for blocking Internet content and communications to the

gateway. You can control access to Internet content by screening for keywords within Web

addresses; you also can block access to all sites except those that are explicitly allowed. Blocking

options include:

•

Blocking access from your LAN to Internet locations that contain keywords that your specify.

•

Blocking access to Web sites (domains) that you specify as off-limits.

•

Allowing access to only Web sites (domains) that you specify as allowed.

You can also block access to the Internet by a specific computer based on the hardware MAC

address of that computer. Blocking access to the Internet based on the hardware MAC address of

the computer or wireless adapter is described in

“Using MAC Filtering to Block Access” on

page 3-6

.

Blocking Keywords and Domains

You can restrict access to Internet content based on Web address keywords and domain names. 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.

To configure Block Sites:

1.

Log in to the gateway by entering the default LAN address of

the default

user name of

admin

, and default password of

password

or use whatever password and LAN

address you have chosen for the gateway.

Wireless Cable Voice Gateway Model CVG834G Reference Manual

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Protecting Your Network

v2.0, November 2007

2.

Click Block Sites under the Content Filtering heading on the main menu.

Keywords

To enable keyword blocking:

1.

On the Block Sites screen, select the

Enable

check box in the Keyword section.

2.

Add keywords by entering them into the Add Keyword List. An example of some Keyword

applications are:

•

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.

•

If the keyword “.” is specified, all Internet browsing access is blocked.

Up to eight entries are supported in the Keyword List.

3.

When you have completed your entries, click

Add Keyword

.

Figure 3-4