NETGEAR DG824M Router Manual PDF (Setup & Configuration Guide)

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Reference Manual for the Model DG824M Wireless ADSL Modem Gateway

Managing Your Network

5-15

Running Diagnostic Utilities and Rebooting the Router

The DG824M gateway has a diagnostics feature. You can use the diagnostics menu to perform the

following functions from the gateway:

•

Ping an IP Address to test connectivity to see if you can reach a remote host.

•

Perform a DNS Lookup to test if an Internet name resolves to an IP address to verify that the

DNS server configuration is working.

•

Display the Routing Table to identify what other routers the router is communicating with.

•

Trace the Routing Path to identify any connectivity or congestion problems in the network.

•

Reboot the Router to enable new network configurations to take effect or to clear problems

with the router’s network connection.

From the Main Menu of the browser interface, under the Maintenance heading, select the Router

Diagnostics heading to display the menu shown in

Figure 5-9

.

Figure 5-9: Diagnostics menu

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Reference Manual for the Model DG824M Wireless ADSL Modem Gateway

5-16

Managing Your Network

Enabling Remote Management

Using the Remote Management page, you can allow a user or users on the Internet to configure,

upgrade and check the status of your NETGEAR Cable/DSL ProSafe VPN Firewall.

Procedure 5-2:

Configure Remote Management

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 User Name, Password and

LAN address you have chosen for the gateway.

2.

From the Advanced section of the main menu, click on the Remote Management link.

3.

Select the Allow Remote Management check box.

4.

Specify what external addresses will be allowed to access the gateway’s remote management.

For security, NETGEAR recommends that you restrict access to as few external IP addresses

as practical.

a.

To allow access from any IP address on the Internet, select Everyone.

b.

To allow access from a range of IP addresses on the Internet, select IP address range.

Enter a beginning and ending IP address to define the allowed range.

c.

To allow access from a single IP address on the Internet, select Only this PC.

Enter the IP address that will be allowed access.

5.

Specify the Port Number that will be used for accessing the management interface.

Web browser access normally uses the standard HTTP service port 80. For greater security,

you can change the remote management web interface to a custom port by entering that

number in the box provided. Choose a number between 1024 and 65535, but do not use the

number of any common service port. The default is 8080, which is a common alternate for

HTTP.

Note:

Be sure to change the router's default password to a very secure password. The

ideal password should contain no dictionary words from any language, and should be a

mixture of letters (both upper and lower case), numbers, and symbols. Your password

can be up to 30 characters.

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Reference Manual for the Model DG824M Wireless ADSL Modem Gateway

Managing Your Network

5-17

6.

Click Apply to have your changes take effect.

When accessing your gateway from the Internet, you will type your gateway's WAN IP

address in your browser's Address (in IE) or Location (in Netscape) box, followed by a colon

(:) and the custom port number. For example, if your external address is 134.177.0.123 and

you use port number 8080, enter in your browser:

http://134.177.0.123:8080

Note:

In this case, the http:// must be included in the address.

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Reference Manual for the Model DG824M Wireless ADSL Modem Gateway

5-18

Managing Your Network

Page 85 / 154

Advanced Configuration

6-1

Chapter 6

Advanced Configuration

This chapter describes how to configure the advanced features of your DG824M Wireless ADSL

Modem Gateway.

Configuring Advanced Security

The DG824M Wireless ADSL Modem Gateway provides a variety of advanced features, such as:

•

Setting up a Demilitarized Zone (DMZ) Server

•

The flexibility of configuring your LAN TCP/IP settings

These features are discussed below.

Setting Up A Default DMZ Server

The Default DMZ Server feature is helpful when using some online games and videoconferencing

applications that are incompatible with NAT. The gateway is programmed to recognize some of

these applications and to work properly with them, but there are other applications that may not

function well. In some cases, one local PC can run the application properly if that PC’s IP address

is entered as the Default DMZ Server.

Note:

For security, you should avoid using the Default DMZ Server feature. When a

computer is designated as the Default DMZ Server, it loses much of the protection of the

firewall, and is exposed to many exploits from the Internet. If compromised, the

computer can be used to attack your network.

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