Table 16-7 Vpn Ike - ZyXEL Communications Prestige 652H series User Manual

The following table describes the fields in this screen.
LABEL
IPSec Setup
Active
Keep Alive
NAT Traversal
Name
IPSec Key Mode
Negotiation Mode
Encapsulation Mode
DNS Server (for
IPSec VPN)
VPN Screens

Table 16-7 VPN IKE

Select this check box to activate this VPN policy. This option determines whether a
VPN rule is applied before a packet leaves the firewall.
Select either Yes or No from the drop-down list box.
Select Yes to have the Prestige automatically reinitiate the SA after the SA lifetime
times out, even if there is no traffic. The remote IPSec router must also have keep
alive enabled in order for this feature to work.
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.
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 policy. You may use any character,
including spaces, but the Prestige drops trailing spaces.
Select IKE or Manual from the drop-down list box. IKE provides more protection so
it is generally recommended. Manual is a useful option for troubleshooting if you
have problems using IKE key management.
Select Main or Aggressive from the drop-down list box. Multiple SAs connecting
through a secure gateway must have the same negotiation mode.
Select Tunnel mode or Transport mode from the drop-down list box.
If there is a private DNS server that services the VPN, type its IP address here.
The Prestige assigns this additional DNS server to the Prestige's DHCP clients that
have IP addresses in this IPSec rule's range of local addresses.
A DNS server allows clients on the VPN to find other computers and servers on the
VPN by their (private) domain names.
Prestige 652H/HW Series User's Guide
DESCRIPTION
16-11