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Firewall - 1 to 1 NAT

Contents

[edit] Overview

1-to-1 NAT Firewall Information
Description Configuration tool for 1-to-1 NAT.
Package Name cc-firewall-dmz
Configuration Page Network > Firewall > 1-to-1 NAT


1-to-1 NAT maps a real Internet IP to an IP on your local area network (LAN).

[edit] Installation

If you did not select this module to be included during the installation process, you must first install the module.

Warning! 
  This module is not available in the Home/Community Edition  
 


[edit] Configuration

You can map 1-to-1 NAT IPs in one of two ways:

  • With no firewall at all
  • With selective ports open

[edit] 1-to-1 NAT - No Firewall

Some protocols can be finicky behind firewalls. In this case you want to configure 1-to-1 NAT with no firewall (make sure you firewall/secure the target LAN system some other way!). In the screenshot below:

  • 216.138.245.23 is mapped to a LAN machine at 192.168.2.2
  • no firewall is enabled.

1-to-1 NAT Wide Open

[edit] 1-to-1 NAT - Selective Ports Open

In the screenshot below:

  • 216.138.245.23 is mapped to an LAN machine at 192.168.2.2
  • only port 22 (SSH) and port 80 (web) are accessible

1-to-1 NAT By Port

[edit] 1-to-1 NAT - With MultiWAN

As of ClarkConnect 4.0 it is now possible to utilize 1-to-1 NAT with a MultiWAN configuration. The configuration remains mostly the same with the addition of an Interface drop-down box containing a list of configured MultiWAN network interfaces.

Warning! 
 

1-to-1 NAT with MultiWAN support is only available in the 4.x Office/Enterprise Edition

 
 


Each 1-to-1 NAT rule must be assigned to an external MultiWAN interface as shown by example below:

1-to-1 NAT with MultiWAN

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