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4.4.4 Routing NAT
IP Mapping Settings
This section allows you to configure your NAT (Network Address Translation). The NAT function is used to map an internal private IP address and port
number(s) to a global public IP address and port number(s). Please ask your 3G provider if a fixed IP WAN address is available on your contract.
To configure your NAT, follow these steps –
1. Mapping no: Enter a number to identify your private – public IP address mapping.
2. Protocol: Select the protocol for which you want the mappings to apply. You can choose TCP, UDP or all.
•
Source IP Address: Enter the source IP address. This is typically your private IP address
•
Incoming Port Range: Enter the incoming port number range.
•
Destination IP Address: Enter the destination IP address. This is typically your public IP address which is allocated by your 3G provider.
•
Destination Port Range: Enter the destination port number range.
Once you have completed your settings, click on 'Save NAT' to store the settings.
DMZ Configuration
If you have a client PC that cannot run an Internet application (e.g. Games) properly from behind the NAT firewall, then you can open up the firewall
restrictions to allow unrestricted two-way Internet access by defining a DMZ Host. The DMZ function allows you to re-direct all packets going to your WAN
port IP address, to a particular IP address in your LAN.
To configure your DMZ, follow these steps –
3. DMZ Settings: Click on 'enable' to turn ON this feature.
4. DMZ IP Address: Enter the IP address you would like to place in your DMZ.
Once you have completed your settings, click on 'Save DMZ' to store the settings.
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