Specifications

Advanced Settings

N150 Wireless ADSL2+ Modem Router DGN1000

Note: For security reasons, 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.

Incoming traffic from the Internet is usually discarded by the wireless modem router unless

the traffic is a response to one of your local computers or a service that you have configured

in the Ports 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.

 To assign a computer or server to be a default DMZ server:

1. In the WAN screen

, select the Default DMZ Server check box.

2. Type the IP address for that server.

3. Fill in the following fields and click App

ly:

Respond to Ping on Internet WAN Port. If you want the wireless mo

dem router to

respond to a ping from the Internet, select this check box. This should be used only as a

diagnostic tool, because it allows your wireless 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 Maximum Transmit Unit (MTU) value for most Ethernet

networks is 1500 bytes, or 1492 bytes for PPPoE connections. For some ISPs you might

need to reduce the MTU. But this is rarely required, and should not be done unless you

are sure it is necessary for your ISP connection.

Disabling the SIP ALG. The Sessio

n 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.