VPN only in ZyWall-2
 
 
Global Setting
 
 
 

Windows Networking (NetBIOS over TCP/IP)
Allow Through IPSec Tunnel

TCP Segment
Adjest Tcp Maximum Segment Size

VPN rules overlap IP addresses
VPN rules skip applying to the overlap range of local and remote IP addresses
(Warning: When this checkbox is not checked, you may not access device because of triggering VPN tunnels)

IPSec Timers Setup
Output Idle Timer (120~3600 sec)
  Input Idle Timer (30~3600 sec, 0 means timer disabled)
  Gateway Domain Name Update Timer (2~60 min, 0 means timer disabled)