Advanced Settings

36

NETGEAR DOCSIS 3.0 N900 Wireless Data Gateway



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 responds to a ping request instead of the

DMZ computer.

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.

Advanced Settings

37

NETGEAR DOCSIS 3.0 N900 Wireless Data Gateway



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.

•

DHCP Lease

. For more information,

see

Reserve an IP Address for DHCP

Use

on page

37.

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 in the LAN 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.

Advanced Settings

38

NETGEAR DOCSIS 3.0 N900 Wireless Data Gateway



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

.

Remote Management

With remote management, you can allow a user or users on the Internet to configure,

upgrade, and check the status of the gateway.

Note:

Use secure passwords if you enable remote management.

Passwords should contain no dictionary words from any language,

and should be a mixture of letters (both uppercase and lowercase),

numbers, and symbols. Your password can be up to 16 characters.

To manage this gateway through the Internet, you need its public IP address, as seen from

the Internet. Your ISP allocates this public IP address. But if your ISP account uses a

dynamic IP address, the address can change each time you connect to your ISP. This

problem has two solutions:

•

Have your ISP allocate you a fixed IP address.

•

Use the DDNS (Dynamic DNS) feature so you can connect using a domain name, rather

than an IP address.



To configure the gateway for remote management:

1.

In the main menu, under Advanced, select

Remote Management

.

Advanced Settings

39

NETGEAR DOCSIS 3.0 N900 Wireless Data Gateway

2.

Select the

Allow Remote Management

check box.

3.

Enter a name in the

Remote User Name field.

To manage the gateway, use this name from the remote computer.

4.

Enter a password in the Remote Password

field.

To access the gateway, use this password from the remote computer.

5.

To access the gateway remotely in your browser when you connect, specify the port

number. To determine the port number:

a.

From a remote location, start a browser.

b.

In the Address or Location field, enter the Internet IP address of this gateway (not

the LAN IP address), followed by a colon and the port number, as follows:

http://

ip_address:pn

|| https://

ip_address:pn

where:

ip_address

is the Internet IP address of this gateway.

pn

is the port number assigned on this screen.

6.

Enter the password for the gateway.

7.

Specify the permitted IP addresses for remote management.

a.

To allow remote management from any originating IP address, select the

ALL IP

Addresses

check box.

NETGEAR strongly recommends not using this option unless it is required.

b.

From the Address Type list, select either

Single Address

or

Address Range

.

c.

Enter the permitted IP addresses.

You can enter a single IP address or up to 16 IP addresses ranges. Each range

begins with a start IP address and finishes with an end IP address in the format of

start IP - end IP.

8.

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.

Advanced Settings

40

NETGEAR DOCSIS 3.0 N900 Wireless Data Gateway

•

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.

By default, this check box is cleared. This

prevents the gateway from allowing any

device to automatically control the

resources, such as port forwarding, of

the gateway.

3.

Complete the Advertisement Period and

Advertisement Time to Live fields.

The UPnP Portmap Table displays the IP

address of each UPnP device that is

accessing the gateway and which

internal and external ports of the gateway

that device opened. The UPnP Portmap Table also displays the protocol for the port that

was opened and if that port is still active for each IP address.

4.

Perform one of the following actions:

•

Click

Apply

to save your settings.

•

Click

Cancel

to disregard any unsaved changes.

•

Click

Refresh

to update the UPnP Portmap Table and to show the active ports that

are currently opened by UPnP devices.

Set Networking Protocols

Network Time Protocol (NTP) is a networking protocol that synchronizes clocks between

computer systems over packet-switched, variable-latency data networks.