Netgear D6200 User Manual download pdf (Page 50)

NETGEAR genie ADVANCED Home

D6200 WiFi DSL Modem Router

• Disable IGMP Proxying. The IGMP proxying function lets a LAN computer receive

the multicast traffic it is interested in from the Internet. Select this check box to disable

the function if you do not need it.

• NAT Filtering. Network Address Translation (NAT) determines how the WiFi DSL

modem router processes inbound traffic. Secured NAT provides a secured firewall to

protect the computers on the LAN from attacks from the Internet, but might prevent

some Internet games, point-to-point applications, or multimedia applications from

functioning. Open NAT provides a much less secured firewall, but allows almost all

Internet applications to function.

• Disable SIP ALG. Some VoIP applications do not work well with the SIP ALG.

Selecting this check box to turn off the SIP ALG might help your VoIP devices to

create or accept a call through the router.

3. Click Apply.

Default DMZ Server

The default DMZ server feature is helpful when you are using some online games and

videoconferencing applications that are incompatible with Network Address Translation

(NAT). The WiFi DSL modem router is programmed to recognize some of these applications

and to work correctly with them, but other applications 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 discarded by the WiFi DSL 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 forward

it to one computer on your network. This computer is called the default DMZ server.

 To set up a default DMZ server:

1. Select ADVANCED > Setup > WAN Setup.

2. Select the Default DMZ Server check box.

3. Type the IP address.

4. Click Apply.

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Netgear D6200 User Manual Page 50