Chapter 15 IPSec VPN Screens
ZyWALL 2WG User’s Guide
309
The following table describes the labels in this screen.
Table 86
SECURITY > VPN > VPN Rules (IKE) > Edit Network Policy
LABEL
DESCRIPTION
Active
If the
Active
check box is selected, packets for the tunnel trigger the ZyWALL to
build the tunnel.
Clear the
Active
check box to turn the network policy off. The ZyWALL does not
apply the policy. Packets for the tunnel do not trigger the tunnel.
If you clear the
Active
check box while the tunnel is up (and click
Apply
), you
turn off the network policy and the tunnel goes down.
Name
Type a name to identify this VPN network policy. You may use any character,
including spaces, but the ZyWALL drops trailing spaces.
Protocol
Enter 1 for ICMP, 6 for TCP, 17 for UDP, etc. 0 is the default and signifies any
protocol.
Nailed-Up
Select this check box to turn on the nailed up feature for this SA.
Turn on nailed up to have the ZyWALL automatically reinitiate the SA after the
SA lifetime times out, even if there is no traffic. The ZyWALL also reinitiates the
SA when it restarts.
The ZyWALL also rebuilds the tunnel if it was disconnected due to the output or
input idle timer.
Allow NetBIOS
Traffic Through
IPSec Tunnel
This field is not available when the ZyWALL is in bridge mode.
NetBIOS (Network Basic Input/Output System) are TCP or UDP packets that
enable a computer to connect to and communicate with a LAN. It may
sometimes be necessary to allow NetBIOS packets to pass through VPN
tunnels in order to allow local computers to find computers on the remote
network and vice versa.
Select this check box to send NetBIOS packets through the VPN connection.
Check IPSec Tunnel
Connectivity
Select the check box and configure an IP address in the
Ping this Address
field to have the ZyWALL periodically test the VPN tunnel to the remote IPSec
router.
The ZyWALL pings the IP address every minute. The ZyWALL starts the IPSec
connection idle timeout timer when it sends the ping packet. If there is no traffic
from the remote IPSec router by the time the timeout period expires, the
ZyWALL disconnects the VPN tunnel.
Log
Select this check box to set the ZyWALL to create logs when it cannot ping the
remote device.
Ping this Address
If you select
Check IPSec Tunnel Connectivity
, enter the IP address of a
computer at the remote IPSec network. The computer's IP address must be in
this IP policy's remote range (see the
Remote Network
fields).
Gateway Policy
Information
Gateway Policy
Select the gateway policy with which to use the VPN policy or store it in the
recycle bin (without an association to any gateway policy).
Virtual Address
Mapping Rule
Virtual address mapping over VPN is available with the routing mode.
Active
Enable this feature to have the ZyWALL use virtual (translated) IP addresses for
the local network for the VPN connection. You do not configure the
Local
Network
fields when you enable virtual address mapping.
Virtual address mapping allows local and remote networks to have overlapping
IP addresses. Virtual address mapping (NAT over IPSec) translates the source
IP addresses of computers on your local network to other (virtual) IP addresses
before sending the packets to the remote IPSec router. This translation hides
the source IP addresses of computers in the local network.
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