Advanced Settings

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NETGEAR DOCSIS 3.0 N450 Wi-Fi Data Gateway

•

To delete a service, select the radio button in the Active Forwarding Rules table for

the service that you want to delete, and click

Delete

.

•

To reset the selection in the Service list and to clear all the fields in the Add Custom

Rules, click

Reset

.

Port T

riggering

Port triggering is an advanced feature that you can use to allow gaming and other Internet

applications that the firewall would otherwise block. You must know the port numbers the

application uses. Port triggering operates as follows:

1.

A computer makes an outgoing connection using a port number defined in the Port

Triggering table.

2.

The gateway records this connection, opens the incoming port or ports associated with this

entry in the Port Triggering List, and associates them with the computer.

3.

The remote system receives the computer’s request, and responds using a different port

number.

4.

The gateway matches the response to the previous request, and forwards the response to

the computer. (Without port triggering, this response would be treated as a new connection

request rather than a response. As such, it would be handled in accordance with the port

forwarding rules.)

Note:

Only one computer at a time can use port triggering. After a

computer finishes using a port triggering application, there is a short

time-out period before another computer can use the application.



To configure port triggering:

1.

In the main menu, under Advanced, select

Port Triggering

.

Advanced Settings

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NETGEAR DOCSIS 3.0 N450 Wi-Fi Data Gateway

2.

For each port trigger, enter the settings in the Port

Triggering List:

•

Trigger Range

. To specify the range of

outgoing ports that are monitored to trigger

the incoming port forwarding rule, enter the

start port and end port.

•

Target Range

. To specify the range of

incoming ports that are opened when

triggered, enter the start port and end port.

•

Protocol

. Select the protocol for the ports:

-

TCP

. Select TCP only.

-

UDP

. Select UDP only.

-

Both

. Select both TCP and UDP.

3.

Select the

Enable

check box for the port trigger.

4.

Perform one of the following actions:

•

Click

Apply

to save your settings and

activate the port triggers.

•

To remove a port trigger, select its radio button, and click

Delete

.

•

To return all trigger and target ranges to zero, click

Reset

.

DMZ Host

You can use the DMZ Host screen to set up a default DMZ computer. Specifying a default

DMZ computer allows you to set up a computer that is available to anyone on the Internet for

services that you have not defined. To minimize security risks, set up the DMZ host only if

you are willing to risk open access. If you do not define a DMZ host, the gateway discards

any undefined service requests.



To set up a DMZ host:

1.

In the main menu, under Advanced, select

DMZ Host

.

2.

Select the

Respond to Ping on WAN Port

check box.

When you select this check box, the gateway, not the DMZ computer, responds to a ping

request.

Advanced Settings

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NETGEAR DOCSIS 3.0 N450 Wi-Fi Data Gateway

For example, some systems tracking the performance of the broadband connections in

terms of latency and packet loss need the gateway to reply to ping requests.

3.

Type the last digits of the IP address in the DMZ Address field.

The DMZ host feature is disabled when the last digit is zero.

4.

Click

Apply

.

LAN IP Setup

The LAN IP screen allows you to configure LAN services such as the IP address of the

gateway and DHCP. The TCP/IP and DHCP default values work fine in most cases.

Note:

If you disable the DHCP server, assign to your computer a static IP

address to reconnect to the gateway and enable the DHCP server

again.



To configure LAN IP settings:

1.

In the main menu, under Advanced, select

LAN IP

.

2.

Specify these settings:

•

LAN IP Address

. The factory default

setting is 192.168.0.1.

•

Subnet Mask

. The network number

portion of an IP address. Unless you

are implementing subnetting, use

255.255.255.0 as the subnet mask.

•

DHCP Server

. The

Yes

radio button is

selected by default so the gateway acts

as a DHCP server, providing the

TCP/IP configuration for all the

computers connected to it.

If you plan to assign IP addresses

manually, or you have another DHCP

server on your network, select the

No

radio button.

•

Starting IP Address

and

Ending IP

Address

. These fields specify the

range in the IP address pool.

•

Max Users

. The maximum number of

users on the network.

Advanced Settings

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NETGEAR DOCSIS 3.0 N450 Wi-Fi Data Gateway

•

DHCP Lease

. For more information, see the following section,

Reserve an IP Address

for DHCP Use

.

3.

Click

Apply

.

Reserve an IP

Address for DHCP Use

To reserve an IP address for DHCP use, enter the DHCP server reservation settings for the

private LAN under DHCP Reservation Lease Info in the LAN IP screen.



To reserve an IP address for DHCP:

1.

In the main menu, under Advanced, select

LAN IP

.

2.

In the DHCP Reservation Lease Info section, enter the MAC address of the computer for

which you want to reserve an IP address.

3.

Enter the permanent IP address for the computer.

4.

Click

Add

to save your settings.

The MAC address and IP address are displayed in the DHCP Client Lease Info table. The

current system time is also displayed.



To delete an IP address from the DHCP Client Lease Info table:

1.

In the DHCP Client Lease Info table, select the radio button for the MAC and IP address

that you want to remove.

2.

Click

Delete.

The information for the selected MAC and IP address is removed from the DHCP Client

Lease Info table.

To remove all information from the DHCP Client Lease Info table, click

Clear DHCP

Leases

.

LAN Switch

The gateway’s LAN interference is a 10/100/1GBASE-T Ethernet switch. The switch ports

are set to automatically negotiate speed and duplex communication with any connected

device. You might want to configure the port if the devices do not auto-negotiate correctly.

Advanced Settings

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NETGEAR DOCSIS 3.0 N450 Wi-Fi Data Gateway



To configure the switch ports:

1.

In the main menu, under Advanced, select

LAN Switch

.

2.

For each port, select the appropriate speed and duplex setting.

3.

Click

Apply

.



To disable a LAN port:

1.

In the main menu, under Advanced, select

LAN Switch

.

2.

In the Auto column corresponding to the port you want to disable, clear the check box.

3.

Click

Apply

.

Configure Universal Plug and Play (UPnP)

Universal Plug and Play (UPnP) helps devices, such as Internet appliances and computers,

access the network and connect to other devices as needed. UPnP devices can

automatically discover the services from other registered UPnP devices on the network. With

UPnP, you can specify the following:

•

Advertisement period

. Specifies how often the gateway broadcasts its UPnP

information. The default is 30 minutes. Lower numbers ensure that control points

have current device status at the expense of more network traffic. Larger numbers

compromise the freshness of the device status but can significantly reduce network

traffic.

•

Advertisement time to live

. The time to live for the advertisement, measured in hops

(steps) for each UPnP packet that is sent. Hops are the steps a packet takes between

routers. The number of hops can range from 1 to 255. The default value for the

advertisement time to live is four hops, which should be fine for most home networks.

If you notice that some devices are not being updated or reached correctly, you might

need to increase this value slightly.



To configure UPnP:

1.

In the main menu, under Advanced, select

UPnP

.

2.

Select the

Turn UPnP On

check box.