ZyXEL Communications P-793H User Manual

 Chapter 11 IPSec VPN

P-793H User’s Guide

Local

Local IP addresses must be static and correspond to the remote IPSec router's 

configured remote IP addresses. 
Two active SAs cannot have the local and remote IP address(es) both the same. 

Two active SAs can have the same local or remote IP address, but not both. You 

can configure multiple SAs between the same local and remote IP addresses, as 

long as only one is active at any time.

Local Address 

Type

Use the drop-down menu to choose Single, Range, or Subnet. Select Single for 

a single IP address. Select Range for a specific range of IP addresses. Select 

Subnet to specify IP addresses on a network by their subnet mask.

IP Address Start 

When the Local Address Type field is configured to Single, enter a (static) IP 

address on the LAN behind your ZyXEL Device. When the Local Address Type 

field is configured to Range, enter the beginning (static) IP address, in a range of 

computers on your LAN behind your ZyXEL Device. When the Local Address 

Type field is configured to Subnet, this is a (static) IP address on the LAN behind 

your ZyXEL Device. 

End / Subnet Mask When the Local Address Type field is configured to Single, this field is N/A. 

When the Local Address Type field is configured to Range, enter the end 

(static) IP address, in a range of computers on the LAN behind your ZyXEL 

Device. When the Local Address Type field is configured to Subnet, this is a 

subnet mask on the LAN behind your ZyXEL Device.

Remote

Remote IP addresses must be static and correspond to the remote IPSec router's 

configured local IP addresses. 
Two active SAs cannot have the local and remote IP address(es) both the same. 

Two active SAs can have the same local or remote IP address, but not both. You 

can configure multiple SAs between the same local and remote IP addresses, as 

long as only one is active at any time.

Remote Address 

Type

Use the drop-down menu to choose Single, Range, or Subnet. Select Single 

with a single IP address. Select Range for a specific range of IP addresses. 

Select Subnet to specify IP addresses on a network by their subnet mask.

IP Address Start 

When the Remote Address Type field is configured to Single, enter a (static) IP 

address on the network behind the remote IPSec router. When the Remote 

Address Type field is configured to Range, enter the beginning (static) IP 

address, in a range of computers on the network behind the remote IPSec router. 

When the Remote Address Type field is configured to Subnet, enter a (static) IP 

address on the network behind the remote IPSec router. 

End / Subnet Mask When the Remote Address Type field is configured to Single, this field is N/A. 

When the Remote Address Type field is configured to Range, enter the end 

(static) IP address, in a range of computers on the network behind the remote 

IPSec router. When the Remote Address Type field is configured to Subnet, 

enter a subnet mask on the network behind the remote IPSec router. 

Address 

Information

My IP Address

Enter the WAN IP address of your ZyXEL Device. The VPN tunnel has to be 

rebuilt if this IP address changes.
The following applies if this field is configured as 0.0.0.0:
The ZyXEL Device uses the current ZyXEL Device WAN IP address (static or 

dynamic) to set up the VPN tunnel. 
If the WAN connection goes down, the ZyXEL Device uses the dial backup IP 

address for the VPN tunnel when using dial backup or the LAN IP address when 

using traffic redirect. See the chapter on WAN for details on dial backup and 

traffic redirect.

Secure Gateway 

Address

Type the WAN IP address or the URL (up to 31 characters) of the IPSec router 

with which you're making the VPN connection. 

Table 54   VPN > Setup > Edit > Manual (continued)