ZyXEL ZyWALL 5 User Guide - Page 363
VPN, NAT, and NAT Traversal
View all ZyXEL ZyWALL 5 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 363 highlights
Chapter 19 IPSec VPN The following table describes the labels in this screen. Table 101 SECURITY > VPN > VPN Rules (IKE) > Edit Gateway Policy LABEL DESCRIPTION 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 VPN, NAT, and NAT Traversal on page 392 for more 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. ZyWALL 5/35/70 Series User's Guide 363