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WAN IP Address

The WAN IP address is an IP address for the NBG-418N, which makes it accessible from an outside

network. It is used by the NBG-418N to communicate with other devices in other networks. It can

be static (fixed) or dynamically assigned by the ISP each time the NBG-418N tries to access the

Internet.

If your ISP assigns you a static WAN IP address, they should also assign you the subnet mask and

DNS server IP address(es) (and a gateway IP address if you use the Ethernet or ENET ENCAP

encapsulation method).

DNS Server Address Assignment

Use Domain Name System (DNS) to map a domain name to its corresponding IP address and vice

versa, for instance, the IP address of www.zyxel.com is 204.217.0.2. The DNS server is extremely

important because without it, you must know the IP address of a computer before you can access

it.

The NBG-418N can get the DNS server addresses in the following ways.

1

The ISP tells you the DNS server addresses, usually in the form of an information sheet, when you

sign up. If your ISP gives you DNS server addresses, manually enter them in the DNS server fields.

2

If your ISP dynamically assigns the DNS server IP addresses (along with the NBG-418N’s WAN IP

address), set the DNS server fields to get the DNS server address from the ISP.

WAN MAC Address

The MAC address screen allows users to configure the WAN port's MAC address by either using the

factory default or cloning the MAC address from a computer on your LAN. Choose

Factory Default

to select the factory assigned default MAC Address.

Otherwise,

click

Clone the computer's MAC address - IP Address

and enter the IP address of

the computer on the LAN whose MAC you are cloning. Once it is successfully configured, the

address will be copied to configuration file. It is recommended that you clone the MAC address prior

to hooking up the WAN Port.

7.3

Internet Connection

Use this screen to change your NBG-418N’s Internet access settings. Click

Network

>

WAN

. The

screen differs according to the encapsulation you choose.

7.3.1

Ethernet Encapsulation

This screen displays when you select

Ethernet

encapsulation.

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Figure 63

Network > WAN > Internet Connection: Ethernet Encapsulation

The following table describes the labels in this screen.

Table 38

Network > WAN > Internet Connection: Ethernet Encapsulation

LABEL

DESCRIPTION

ISP Parameters for Internet Access

Connection Type

You must choose the

Ethernet

option when the WAN port is used as a regular Ethernet.

WAN IP Address Assignment

Get automatically

from ISP

Select this option If your ISP did not assign you a fixed IP address. This is the default

selection.

Use fixed IP

Address

Select this option If the ISP assigned a fixed IP address.

IP Address

Enter your WAN IP address in this field if you selected

Use Fixed IP Address

.

IP Subnet

Mask

Enter the

IP Subnet Mask

in this field.

Gateway IP

Address

Enter a

Gateway IP Address

(if your ISP gave you one) in this field.

MTU Auto

Select

Auto

if you want to have the Maximum Transmission Unit (MTU) automatically

configured. Select

Manual

if you want to enter the MTU manually in the field below.

MTU

Enter the MTU or the largest packet size per frame that your NBG-418N can receive and

process.

DNS Servers

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7.3.2

PPPoE Encapsulation

The NBG-418N supports PPPoE (Point-to-Point Protocol over Ethernet). PPPoE is an IETF standard

(RFC 2516) specifying how a personal computer (PC) interacts with a broadband modem (DSL,

cable, wireless, etc.) connection. The

PPP over Ethernet

option is for a dial-up connection using

PPPoE.

For the service provider, PPPoE offers an access and authentication method that works with existing

access control systems (for example Radius).

One of the benefits of PPPoE is the ability to let you access one of multiple network services, a

function known as dynamic service selection. This enables the service provider to easily create and

offer new IP services for individuals.

Operationally, PPPoE saves significant effort for both you and the ISP or carrier, as it requires no

specific configuration of the broadband modem at the customer site.

By implementing PPPoE directly on the NBG-418N (rather than individual computers), the

computers on the LAN do not need PPPoE software installed, since the NBG-418N does that part of

the task. Furthermore, with NAT, all of the LANs’ computers will have access.

First DNS Server

Second DNS

Server

Select

From ISP

if your ISP dynamically assigns DNS server information (and the NBG-

418N’s WAN IP address). The field to the right displays the (read-only) DNS server IP

address that the ISP assigns.

Select

User-Defined

if you have the IP address of a DNS server. Enter the primary and

secondary DNS server's IP address in the fields to the right.

WAN MAC Address

The MAC address section allows users to configure the WAN port's MAC address by either

using the NBG-418N’s MAC address, copying the MAC address from a computer on your

LAN or manually entering a MAC address.

Factory default

Select

Factory default

to use the factory assigned default MAC Address.

Clone the

computer's MAC

address - MAC

Address

Select this option to clone the MAC address of the computer (displaying in the screen)

from which you are configuring the NBG-418N. Once it is successfully configured, the

address will be copied to the rom file. It will not change unless you change the setting or

upload a different ROM file.

Set WAN MAC

Address

Select this option and enter the MAC address you want to use.

Apply

Click

Apply

to save your changes back to the NBG-418N.

Reset

Click

Reset

to begin configuring this screen afresh.

Table 38

Network > WAN > Internet Connection: Ethernet Encapsulation (continued)

LABEL

DESCRIPTION

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This screen displays when you select

PPPoE

encapsulation.

Figure 64

Network > WAN > Internet Connection: PPPoE Encapsulation

The following table describes the labels in this screen.

Table 39

Network > WAN > Internet Connection: PPPoE Encapsulation

LABEL

DESCRIPTION

ISP Parameters for Internet Access

Connection Type

Select

PPP over Ethernet

if you connect to your Internet via dial-up.

Service Name

Type the PPPoE service name provided to you. PPPoE uses a service name to identify and

reach the PPPoE server.

User Name

Type the user name given to you by your ISP.

Password

Type the password associated with the user name above.

Retype to

Confirm

Type your password again to make sure that you have entered is correctly.

MTU Size

Enter the MTU or the largest packet size per frame that your NBG-418N can receive and

process.

Nailed-Up

Connection

Select

Nailed-Up Connection

if you do not want the connection to time out.

Idle Timeout

This value specifies the time in minutes that elapses before the router automatically

disconnects from the PPPoE server.

DNS Servers

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7.3.3

PPTP Encapsulation

Point-to-Point Tunneling Protocol (PPTP) is a network protocol that enables secure transfer of data

from a remote client to a private server, creating a Virtual Private Network (VPN) using TCP/IP-

based networks.

PPTP supports on-demand, multi-protocol and virtual private networking over public networks, such

as the Internet.

First DNS Server

Second DNS

Server

If you do not configure a DNS server, you must know the IP address of a computer in

order to access it.

Select

From ISP

if your ISP dynamically assigns DNS server information (and the NBG-

418N’s WAN IP address). The field to the right displays the (read-only) DNS server IP

address that the ISP assigns.

Select

User-Defined

if you have the IP address of a DNS server. Enter the primary and

secondary DNS server's IP address in the fields to the right.

WAN MAC

Address

The MAC address section allows users to configure the WAN port's MAC address by using

the NBG-418N’s MAC address, copying the MAC address from a computer on your LAN or

manually entering a MAC address.

Factory default

Select

Factory default

to use the factory assigned default MAC Address.

Clone the

computer's MAC

address - MAC

Address

Select this option to clone the MAC address of the computer (displaying in the screen)

from which you are configuring the NBG-418N. Once it is successfully configured, the

address will be copied to the rom file. It will not change unless you change the setting or

upload a different ROM file.

Set WAN MAC

Address

Select this option and enter the MAC address you want to use.

Apply

Click

Apply

to save your changes back to the NBG-418N.

Reset

Click

Reset

to begin configuring this screen afresh.

Table 39

Network > WAN > Internet Connection: PPPoE Encapsulation (continued)

LABEL

DESCRIPTION