ZyXEL Communications Vantage CNM 2.3 User Manual page 141

The following table describes the labels in this screen.
Table 50 Device Operation > Device Configuration > Security > VPN > VPN Rules
(IKE) > Gateway Policy Add/Edit
LABEL
Property
NAT Traversal
Name
Gateway Policy Information
My ZyWALL
Address Type
My ZyWALL IP
Address
My ZyWALL Domain
Name
Vantage CNM User's Guide
DESCRIPTION
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.
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 port 500 to the IPSec router behind the NAT router.
Type up to 32 characters to identify this VPN gateway policy. You
may use any character, including spaces, but the device drops
trailing spaces.
This field specifies how the IP address of the device is specified.
IP Address: The device's IP address is a static IP address.
Domain Name: The device's IP address is the IP address mapped
to a specified domain name.
DDNS Domain Name: The device's IP address is the IP address
mapped to a specified DDNS domain name.
The VPN tunnel has to be rebuilt if the device's IP address changes
after setup.
This field is enabled if My ZyWALL Address Type is IP Address.
Enter the device's static WAN IP address or leave the field set to
0.0.0.0. The following applies if this field is configured as 0.0.0.0:
• When the WAN port operation mode is set to Active/Passive,
the device uses the IP address (static or dynamic) of the WAN
port that is in use.
• When the WAN port operation mode is set to Active/Active, the
device uses the IP address (static or dynamic) of the primary
(highest priority) WAN port to set up the VPN tunnel as long as
the corresponding WAN1 or WAN2 connection is up. If the
corresponding WAN1 or WAN2 connection goes down, the device
uses the IP address of the other WAN port.
• If both WAN connections go down, the device uses the dial
backup IP address for the VPN tunnel when using dial backup or
the LAN IP address when using traffic redirect. See the chapter
on WAN for details on dial backup and traffic redirect.
This field is enabled if My ZyWALL Address Type is IP Address.
Enter the domain name associated with the device in the VPN
tunnel.
Chapter 6 Device Security Settings
141