ZyXEL p-2802h-i1 Manual Do Utilizador

 Chapter 14 VPN Screens

P-2802H(W)(L)-I Series User’s Guide

NAT Traversal

This function is available if the VPN protocol is ESP.
Select this check box if you want to set up a VPN tunnel when there are NAT 

routers between the ZyXEL Device and remote IPSec router. The remote IPSec 

router must also enable NAT traversal, and the NAT routers have to forward UDP 

port 500 packets to the remote IPSec router behind the NAT router.

Name

Type up to 32 characters to identify this VPN policy. You may use any character, 

including spaces, but the ZyXEL Device drops trailing spaces.

IPSec Key Mode

Select IKE or Manual from the drop-down list box. IKE provides more protection 

so it is generally recommended. Manual is a useful option for troubleshooting if 

you have problems using IKE key management. 

Negotiation Mode

Select Main or Aggressive from the drop-down list box. Multiple SAs connecting 

through a secure gateway must have the same negotiation mode. 

Encapsulation 

Mode

Select Tunnel mode or Transport mode from the drop-down list box. 

DNS Server (for 

IPSec VPN)

If there is a private DNS server that services the VPN, type its IP address here. 

The ZyXEL Device assigns this additional DNS server to the ZyXEL Device's 

DHCP clients that have IP addresses in this IPSec rule's range of local 

addresses.
A DNS server allows clients on the VPN to find other computers and servers on 

the VPN by their (private) domain names.

Local

Specify the IP addresses of the devices behind the ZyXEL Device that can use 

the VPN tunnel. The local IP addresses must 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

Specify the IP addresses of the devices behind the remote IPSec router that can 

use the VPN tunnel. The remote IP addresses must 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.

Table 77   VPN Setup; Edit