ZyXEL Communications 5 Series - Manual (Page 354)

ZyWALL 5/35/70 Series User’s Guide
354 Chapter 18 IPSec VPN
18.13 VPN Global Setting
Click SECURITY > VPN > Global Setting to open the VPN Global Setting screen. Use this
screen to change settings that apply to all of your VPN tunnels.
Figure 185 SECURITY > VPN > Global Setting
The following table describes the labels in this screen.
Table 101 SECURITY > VPN > Global Setting
LABEL DESCRIPTION
Output Idle Timer When traffic is sent to a remote IPSec router from which no reply is received
after the specified time period, the ZyWALL checks the VPN connectivity. If
the remote IPSec router does not reply, the ZyWALL automatically
disconnects the VPN tunnel.
Enter the time period (between 120 and 3600 seconds) to wait before the
ZyWALL checks all of the VPN connections to remote IPSec routers.
Enter 0 to disable this feature.
Input Idle Timer When no traffic is received from a remote IPSec router after the specified
time period, the ZyWALL checks the VPN connectivity. If the remote IPSec
router does not reply, the ZyWALL automatically disconnects the VPN tunnel.
Enter the time period (between 30 and 3600 seconds) to wait before the
ZyWALL checks all of the VPN connections to remote IPSec routers.
Enter 0 to disable this feature.
Gateway Domain Name
Update Timer This field is applicable when you enter a domain name to identify the
ZyWALL and/or the remote secure gateway.
Enter the time period (between 2 and 60 minutes) to wait before the ZyWALL
updates the domain name and IP address mapping through a DNS server.
The ZyWALL rebuilds the VPN tunnel if it finds that the domain name is now
using a different IP address (any users of the VPN tunnel will be temporarily
disconnected).
Enter 0 to disable this feature.