ZyXEL 2WG Guía Del Usuario

 Chapter 15 IPSec VPN Screens

ZyWALL 2WG User’s Guide

The following table describes the labels in this screen. 

Table 85   SECURITY > VPN > VPN Rules (IKE) > Edit Gateway Policy 

Property

Name

Type up to 32 characters to identify this VPN gateway policy. You may use any 

character, including spaces, but the ZyWALL drops trailing spaces.

NAT Traversal

Select this check box to enable NAT traversal. NAT traversal allows you to set up 

a VPN connection when there are NAT routers between the two IPSec routers.

Note: The remote IPSec router must also have NAT traversal 

enabled. See 

information.

You can use NAT traversal with ESP protocol using Transport or Tunnel mode, 

but not with AH protocol nor with manual key management. In order for an IPSec 

router behind a NAT router to receive an initiating IPSec packet, set the NAT 

router to forward UDP ports 500 and 4500 to the IPSec router behind the NAT 

router.

Gateway Policy 

Information 

My ZyWALL

When the ZyWALL is in router mode, this field identifies the WAN IP address or 

domain name of the ZyWALL. You can select My Address and enter the 

ZyWALL's static WAN IP address (if it has one) or leave the field set to 0.0.0.0. 
The ZyWALL uses its current WAN IP address (static or dynamic) in setting up the 

VPN tunnel if you leave this field as 0.0.0.0. If the WAN connection goes down, 

the ZyWALL uses the dial backup IP address for the VPN tunnel when using dial 

backup or the LAN IP address when using traffic redirect.
Otherwise, you can select My Domain Name and choose one of the dynamic 

domain names that you have configured (in the DDNS screen) to have the 

ZyWALL use that dynamic domain name's IP address. 
When the ZyWALL is in bridge mode, this field is read-only and displays the 

ZyWALL’s IP address.
The VPN tunnel has to be rebuilt if the My ZyWALL IP address changes after 

setup.

Primary Remote 

Gateway 

Type the WAN IP address or the domain name (up to 31 characters) of the IPSec 

router with which you're making the VPN connection. Set this field to 0.0.0.0 if the 

remote IPSec router has a dynamic WAN IP address.
In order to have more than one active rule with the Primary Remote Gateway 

field set to 0.0.0.0, the ranges of the local IP addresses cannot overlap between 

rules.
If you configure an active rule with 0.0.0.0 in the Primary Remote Gateway field 

and the LAN’s full IP address range as the local IP address, then you cannot 

configure any other active rules with the Primary Remote Gateway field set to 

0.0.0.0.

Enable IPSec High 

Availability

Turn on the high availability feature to use a redundant (backup) VPN connection 

to another WAN interface on the remote IPSec router if the primary (regular) VPN 

connection goes down. The remote IPSec router must have a second WAN 

connection in order for you to use this.
To use this, you must identify both the primary and the redundant remote IPSec 

routers by WAN IP address or domain name (you cannot set either to 0.0.0.0).

Redundant 

Remote Gateway 

Type the WAN IP address or the domain name (up to 31 characters) of the 

backup IPSec router to use when the ZyWALL cannot connect to the primary 

remote gateway.