Specify Network Settings

96

Nighthawk AC1900

Smart

WiFi

Router Model

R7000

View WAN Settings

You can view or configure wide area network (WAN) settings for the Internet port. You can set

up a DMZ (demilitarized zone) server, change the maximum transmit unit (MTU) size, and

enable the router to respond to a ping to its WAN (Internet) port.



To view the WAN settings:

1.

Launch an Internet browser from a computer or wireless device that is connected to the

network.

2.

Type

http://www.routerlogin.net

or

.

A login screen displays.

3.

Enter the router user name and password.

The user name is

admin

. The default password is

password

. The user name and

password are case-sensitive.

The BASIC Home screen displays.

4.

Select

ADVANCED > Setup > WAN Setup

.

The following settings display:

•

Disable Port Scan and DoS Protection

. DoS protection protects your LAN against

denial of service attacks such as Syn flood, Smurf Attack, Ping of Death, and many

others. Select this check box only in special circumstances.

•

Default DMZ Server

. This feature is sometimes helpful when you are playing online

games or videoconferencing, but it makes the firewall security less effective. See

Set

Up a Default DMZ Server

on page

97.

•

Respond to Ping on Internet Port

. This feature allows your router to be discovered.

Use this feature only as a diagnostic tool or if you have a specific reason.

•

Disable IGMP Proxying

. IGMP proxying allows a computer on the local area network

(LAN) to receive the multicast traffic it is interested in from the Internet. If you do not

need this feature, you can select this check box to disable it.

Specify Network Settings

97

Nighthawk AC1900

Smart

WiFi

Router Model

R7000

•

MTU Size (in bytes)

. The normal MTU (maximum transmit unit) value for most

Ethernet networks is 1500 bytes, or 1492 bytes for PPPoE connections. Change the

MTU only if you are sure that it is necessary for your ISP connection. See

Change the

MTU Size

on page

37.

•

NAT Filtering

. Network Address Translation (NAT) determines how the router

processes inbound traffic. Secured NAT protects computers on the LAN from attacks

from the Internet, but might prevent some Internet games, point-to-point applications,

or multimedia applications from working. Open NAT provides a much less secured

firewall, but allows almost all Internet applications to work.

5.

Click the

Apply

button.

Your changes are saved.

Set Up a 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 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 the IP address for that computer 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.

The router usually detects and discards incoming traffic from the Internet that is not 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 the router

forward the traffic to one computer on your network. This computer is called the default DMZ

server.



To set up a default DMZ server:

1.

Launch an Internet browser from a computer or wireless device that is connected to the

network.

2.

Type

http://www.routerlogin.net

or

.

A login screen displays.

3.

Enter the router user name and password.

The user name is

admin

. The default password is

password

. The user name and

password are case-sensitive.

Specify Network Settings

98

Nighthawk AC1900

Smart

WiFi

Router Model

R7000

The BASIC Home screen displays.

4.

Select

ADVANCED > Setup > WAN Setup

.

5.

Select the

Default DMZ Server

check box.

6.

Type the IP address.

7.

Click the

Apply

button.

Your change takes effect.

Change the Router’s Device Name

The router’s device name is R7000. This device name displays in file manager when you

browse your network.



To change the router’s device name:

1.

Launch an Internet browser from a computer or wireless device that is connected to the

network.

2.

Type

http://www.routerlogin.net

or

.

A login screen displays.

3.

Enter the router user name and password.

The user name is

admin

. The default password is

password

. The user name and

password are case-sensitive.

The BASIC Home screen displays.

4.

Select

ADVANCED > Setup > LAN Setup

5.

In the Device Name field, type a new name.

6.

Click the

Apply

button.

Your change is saved.

Change the LAN TCP/IP Settings

The router is preconfigured to use private IP addresses on the LAN side and to act as a

DHCP server. The router’s default LAN IP configuration is as follows:

•

LAN IP address

. 192.168.1.1

•

Subnet mask

. 255.255.255.0

These addresses are part of the designated private address range for use in private networks

and are suitable for most applications. If your network requires a different IP addressing

scheme, you can change these settings

You might want to change these settings if you need a specific IP subnet that one or more

devices on the network uses, or if you have competing subnets with the same IP scheme.

Specify Network Settings

99

Nighthawk AC1900

Smart

WiFi

Router Model

R7000



To change the LAN TCP/IP settings:

1.

Launch an Internet browser from a computer or wireless device that is connected to the

network.

2.

Type

http://www.routerlogin.net

or

.

A login screen displays.

3.

Enter the router user name and password.

The user name is

admin

. The default password is

password

. The user name and

password are case-sensitive.

The BASIC Home screen displays.

4.

Select

ADVANCED > Setup > LAN Setup

.

5.

In the I

P Address

field, type the IP address.

6.

In the

IP Subnet Mask

, type the subnet mask of the router.

The IP address and subnet mask identifies which addresses are local to a specific device

and which must be reached through a gateway or router.

7.

Change the RIP settings.

Router Information Protocol (RIP) allows a router to exchange routing information with

other routers.

a.

In the

RIP Direction

list, select one of the following:

-

Both

. The router broadcasts its routing table periodically and incorporates

information that it receives.

-

Out Only

. The router broadcasts its routing table periodically.

-

In Only

. The router incorporates the RIP information that it receives.

b.

In the

RIP Version list

, select one of the following:

Specify Network Settings

100

Nighthawk AC1900

Smart

WiFi

Router Model

R7000

-

Disabled

. This is the default setting.

-

RIP-1

. This format is universally supported. It is adequate for most networks,

unless you have an unusual network setup.

-

RIP-2

. This format carries more information. Both RIP-2B and RIP-2M send the

routing data in RIP-2 format. RIP-2B uses subnet broadcasting. RIP-2M uses

multicasting.

8.

Click the

Apply

button.

Your changes are saved.

If you changed the LAN IP address of the router, you are disconnected when this change

takes effect.

9.

To reconnect, close your browser, relaunch it, and log in to the router

Specify the IP Addresses that the Router Assigns

By default, the router acts as a Dynamic Host Configuration Protocol (DHCP) server. The

router assigns IP, DNS server, and default gateway addresses to all computers connected to

the LAN. The assigned default gateway address is the LAN address of the router.

These addresses must be part of the same IP address subnet as the router’s LAN IP

address. Using the default addressing scheme, define a range between 192.168.1.2 and

192.168.1.254, although you can save part of the range for devices with fixed addresses.



To specify the pool of IP addresses that the router assigns:

1.

Launch an Internet browser from a computer or wireless device that is connected to the

network.

2.

Type

http://www.routerlogin.net

or

.

A login screen displays.

3.

Enter the router user name and password.

The user name is

admin

. The default password is

password

. The user name and

password are case-sensitive.

The BASIC Home screen displays.