ZyXEL Communications G.SHDSL.bis 4-port Security Gateway P-793H - Manual (Page 166)

P-793H User’s Guide
166 Chapter 11 IPSec VPN
Figure 79 VPN > Setup > Edit
The following table describes the fields in this screen.
Table 51 VPN > Setup > Edit
LABEL DESCRIPTION
IPSec Setup
Active Select this check box to activate this VPN policy. This option determines whether
a VPN rule is applied before a packet leaves the firewall.
Keep Alive Select either Yes or No from the drop-down list box.
Select Yes to have the ZyXEL Device 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.
NAT Traversal Select this check box if you want to set up a VPN tunnel when there are NAT
routers between the ZyXEL Device and remote IPSec router. The remote IPSec
router must also enable NAT traversal, and the NAT routers have to forward UDP
port 500 packets to the remote IPSec router behind the NAT router.