ZyXEL Communications NBG420N User Manual

Chapter 15 IPSec VPN

NBG420N User’s Guide

The following table describes the fields in this screen.

Click the Edit icon in the General screen to display the Rule Setup screen.
This figure helps explain the main fields.

Table 62   Security > VPN > General

#

This is the VPN policy index number. 

Active

This field displays whether the VPN policy is active or not. 
This icon is turned on when the rule is enabled. 

Local Addr.

This displays the beginning and ending (static) IP addresses or a (static) IP address 

and a subnet mask of computer(s) on your local network behind your NBG420N. 

Remote Addr.

This displays the beginning and ending (static) IP addresses or a (static) IP address 

and a subnet mask of computer(s) on the remote network behind the remote IPSec 

router.
This field displays 0.0.0.0 when the Secure Gateway Address field displays 0.0.0.0. 

In this case only the remote IPSec router can initiate the VPN.

Encap.

This field displays Tunnel or Transport mode (Tunnel is the default selection).

Algorithm

This field displays the security protocol, encryption algorithm and authentication 

algorithm used for an SA. 

Gateway

This is the static WAN IP address or URL of the remote IPSec router. This field 

displays 0.0.0.0 when you configure the Secure Gateway Address field in the Rule 

Setup screen to 0.0.0.0.

Modify

Click the Edit icon to go to the screen where you can edit the VPN rule.
Click the Remove icon to remove an existing VPN rule.

Windows 

Networking 

(NetBIOS over 

TCP/IP)

NetBIOS (Network Basic Input/Output System) are TCP or UDP packets that enable 

a computer to find other computers. 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.

Allow NetBIOS 

Traffic Through 

IPSec Tunnel

Select this check box to send NetBIOS packets through the VPN connection.

Apply

Click Apply to save your changes back to the NBG420N.

Reset

Click Reset to begin configuring this screen afresh.