Specify Network Settings

61

AC1750 WiFi Cable Modem Router

5.

Click the

Set Up Access List

button.

6.

Select the

Turn Access Control On

check box and select one of the following radio

buttons:

•

Allow List

. Allow computers and devices in the list to connect with WiFi.

•

Deny List

. Deny WiFi access to computers and devices in the list.

7.

Click the

Add

button.

The screen displays a list of available wireless cards.

8.

To add a device from the Available Wireless Cards list, do the following:

a.

Select the device.

b.

Click the

Add

button.

The device displays in the Wireless Card Access List.

9.

To add a computer or device that is not in the list, do the following:

a.

Type a name in the

Device Name

field.

b.

Type the MAC address in the

MAC Address

field.

The MAC address is found on the computer or device.

c.

Click the

Add

button.

The device displays in the Wireless Card Access List.

10.

Click the

Apply

button.

Your changes are saved.

Specify Network Settings

62

AC1750 WiFi Cable Modem Router

Dynamic DNS

If your Internet provider gave you a permanently assigned IP address, you can register a

domain name and link that name to your IP address by public Domain Name Servers (DNS).

However, if your Internet account uses a dynamically assigned IP address, you do not know

in advance what your IP address is, and the address can change frequently. In this case, you

can use a commercial Dynamic DNS service. This type of service lets you register your

domain to their IP address and forwards traffic directed at your domain to your frequently

changing IP address.

If your Internet provider assigns a private WAN IP address (such as 192.168.x.x or 10.x.x.x),

the Dynamic DNS service does not work because private addresses are not routed on the

Internet.

Your modem router contains a client that can connect to the Dynamic DNS service that

DynDNS.org provided. First, visit their website at

and obtain an

account and host name that you configure in the modem router. Then, whenever your

Internet provider-assigned IP address changes, your modem router automatically contacts

the Dynamic DNS service provider, logs in to your account, and registers your new IP

address. If your host name is hostname, for example, you can reach your modem router at



To set up Dynamic DNS:

1.

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

network.

2.

Type

http://routerlogin.net

or

.

A login screen displays.

3.

Enter the modem 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 >

Advanced Setup > Dynamic DNS.

5.

Register for an account with one of the Dynamic DNS service providers whose URLs display

in the

Service Provider

list.

6.

Select the

Use a Dynamic DNS Service

check box.

Specify Network Settings

63

AC1750 WiFi Cable Modem Router

7.

Select the URL for your Dynamic DNS service provider.

8.

IN the

Host Name

field, type the host name (or domain name) that your Dynamic DNS

service provider gave you.

9.

In the

User Name

field, type the user name for your Dynamic DNS account.

This name is the name that you use to log in to your account, not your host name.

10.

In the

Password

field, type the password (or key) for your Dynamic DNS account.

11.

Click the

Apply

button.

Your configuration is saved.

Improve Network Connections with Universal Plug and

Play

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.

If you use applications such as multiplayer gaming, peer-to-peer connections, or real-time

communications such as instant messaging or remote assistance (a feature in Windows XP),

enable UPnP.



To enable Universal Plug and Play:

1.

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

network.

2.

Type

http://routerlogin.net

or

.

A login screen displays.

3.

Enter the modem 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 > Advanced Setup > UPnP

.

5.

Select the

Turn UPnP On

check box.

Specify Network Settings

64

AC1750 WiFi Cable Modem Router

By default, this check box is selected. If the

Turn UPnP On

check box is cleared, the

modem router does not allow any device to automatically control router resources, such

as port forwarding.

6.

Type the advertisement period in minutes.

The advertisement period specifies how often the modem router broadcasts its UPnP

information. This value can range from 1 to 1440 minutes. The default period is 30

minutes. Shorter durations ensure that control points receive current device status at the

expense of more network traffic. Longer durations can compromise the freshness of the

device status, but can significantly reduce network traffic.

7.

Type the advertisement time to live in hops.

The time to live for the advertisement is measured in hops (steps) for each UPnP packet

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 4 hops, which should

be fine for most home networks. If you notice that some devices are not being updated or

reached correctly, it might be necessary to increase this value.

8.

Click the

Apply

button.

The UPnP Portmap Table displays the IP address of each UPnP device that is accessing

the modem router and which ports (internal and external) that device opened. The UPnP

Portmap Table also displays what type of port is open and whether that port is still active

for each IP address.



To refresh the information in the UPnP Portmap Table:

Click the

Refresh

button.

65

7

7.

Manage Your Network

This chapter describes the modem router settings for administering and maintaining your

modem router and home network.

This chapter includes the following sections:

•

View Modem Router Status

•

Reboot the Modem Router

•

Change the Router Mode

•

View Logs of Modem Router Activity

•

View a Network Map

•

Manage the Modem Router Configuration File

•

Change the admin Password

•

View Event Logs

•

Run the Ping Utility

•

Run the Traceroute Utility

•

View Wireless Access Points in Your Area

•

View or Change the Modem Router Wireless Channel

•

Remote Management