RangeMax Dual Band
Table 5-2. WAN Setup Settings
Setting | Description |
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Respond to Ping on Internet | If you want the modem router to respond to a ping from the Internet, select this |
WAN Port | check box. This should be used only as a diagnostic tool, since it allows your |
| modem router to be discovered. Do not select this check box unless you have |
| a specific reason to do so. |
|
|
MTU Size (in bytes) | The normal MTU (Maximum Transmit Unit) value for most Ethernet networks |
| is 1500 bytes, or 1492 Bytes for PPPoE connections. For some ISPs you |
| might need to reduce the MTU. This is rarely required, and should not be done |
| unless you are sure it is necessary for your ISP connection. See “Changing |
| the MTU Size” on page |
|
|
Disable SIP ALG | The Session Initiation Protocol (SIP) Application Level Gateway (ALG) is |
| enabled by default to optimize VoIP phone calls that use the SIP. The Disable |
| SIP ALG check box allows you to disable the SIP ALG. Disabling the SIP ALG |
| might be useful when running certain applications. |
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|
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 Network Address Translation (NAT). The modem router is programmed to recognize some of these applications and to work correctly with them, but there are other applications that might not function well. In some cases, one local computer can run the application correctly if that computer’s IP address is entered as the default DMZ server.
Warning: 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 computer can be used to attack other computers on your network.
Incoming traffic from the Internet is usually discarded by the modem router unless the traffic is a response to one of your local computers or a service that you have configured in the Port Forwarding/Port Triggering screen. 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 screen lets you configure a default DMZ server. To assign a computer or server to be a default DMZ server:
1.In the last Default DMZ Server field, type the last digit of the IP address for that computer. To remove the default DMZ server, enter 0 (zero).
2.Select the Default DMZ Server check box, and click Apply.
Customizing Your Network Settings |