Netgear TA612V User Manual download pdf (Page 56)

Reference Manual for the Broadband Voice Adapter TA612V

6-8 Advanced Configuration

202-10037-01, March 2005

Incoming traffic from the Internet is normally discarded by the router unless the traffic is a

response to one of your local computers or a service that you have configured in the Ports menu.

Instead of discarding this traffic, you can have it forwarded to one computer on your network. This

computer is called the Default DMZ Server.

The WAN Setup menu, shown below lets you configure a Default DMZ Server.

To assign a computer or server to be a Default DMZ server, follow these steps:

1. Click WAN Setup on the Advanced section of the main menu.

2. Type the IP address for that server. To remove the default DMZ server, replace the IP address

numbers with all zeros.

3. Click Apply to save your settings.

• Respond to Ping on Internet WAN Port

If you want the router to respond to a 'ping' from the Internet, click the ‘Respond to Ping on

Internet WAN Port’ check box. This should only be used as a diagnostic tool, since it allows

your router to be discovered. Don't check this box unless you have a specific reason to do so.

• Setting the MTU Size

The default MTU size is usually fine. The normal MTU (Maximum Transmit Unit) value for

most Ethernet networks is 1500 Bytes. For some ISPs, particularly some using PPPoE, you

may need to reduce the MTU. This should not be done unless you are sure it is necessary for

your ISP.

Any packets sent through the router that are larger than the configured MTU size will be

repackaged into smaller packets to meet the MTU requirement. To change the MTU size:

Under MTU Size, enter a new size between 64 and 1500. Then, click Apply to save the new

configuration.

Note: DMZ servers pose a security risk. A computer designated as the default DMZ

server loses much of the protection of the firewall, and is exposed to exploits from the

Internet. If compromised, the DMZ server can be used to attack your network.

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Netgear TA612V User Manual Page 56