ZyXEL Communications ZyWALL5UTM 4.0 User Manual

ZyWALL 5/35/70 Series User’s Guide

Chapter 7 WAN Screens

144

The following table describes the labels in this screen.

Table 40   WAN: PPPoE Encapsulation

ISP Parameters 

for Internet 

Access

Encapsulation

The PPPoE choice is for a dial-up connection using PPPoE. The router 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 

(i.e. DSL, cable, wireless, etc.) connection. Operationally, PPPoE saves significant 

effort for both the end user and ISP/carrier, as it requires no specific configuration of 

the broadband modem at the customer site. By implementing PPPoE directly on the 

router rather than individual computers, the computers on the LAN do not need 

PPPoE software installed, since the router does that part of the task. Further, with 

NAT, all of the LAN's computers will have access.

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.

Authentication 

Type

Use the drop-down list box to select an authentication protocol for outgoing calls. 

Options are:
CHAP/PAP - Your ZyWALL accepts either CHAP or PAP when requested by this 

remote node. 
CHAP - Your ZyWALL accepts CHAP only. 
PAP - Your ZyWALL accepts PAP only. 

Nailed-Up 

Select Nailed-Up if you do not want the connection to time out.

Idle Timeout

This value specifies the time in seconds that elapses before the ZyWALL 

automatically disconnects from the PPPoE server.

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. 

My WAN IP 

Address

Enter your WAN IP address in this field if you selected Use Fixed IP Address. 

Advanced Setup

Enable NAT 

(Network 

Address 

Translation)

Network Address Translation (NAT) allows the translation of an Internet protocol 

address used within one network (for example a private IP address used in a local 

network) to a different IP address known within another network (for example a 

public IP address used on the Internet). 
Select this checkbox to enable NAT.
For more information about NAT see