Black Box LR5100A-T Network Address Translation and Port Translation, Configuration, Applications

Applications

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Network Address Translation and Port Translation

The router provides support for Network Address Translation (NAT). Network Address Translation is a technique that translates private IP address on a private network to valid global IP addresses for access to the Internet. Network Address Port Translation (NAPT) translates both the IP address and the port number. The advantage of port translation is that more than one private IP address can be translated to the same global IP address. Port translation allows data exchanges initiated from hosts with private IP addresses to be sent to the Internet via the router using a single global IP address. A global IP address must be assigned to the WAN link upon which NAPT is enabled for port translation to work. The global IP address will be assigned by the ISP.

To use NAPT, the private network addresses of the services that will be available globally must be assigned:

NAT Exports

Location: Main

ÄConfiguration

ÄApplications Set-up

ÄNAT Exports

ÄEdit Services

Äenter the private network IP address of each service offered

Then NAT (Network Address Translation) is enabled:

NAT Enable

Location: Main

ÄConfiguration

ÄWAN Set-up

ÄRemote Site Set-up

ÄEdit Remote Site

ÄProtocol Set-up

ÄIP Parameters

ÄNAT Enabled Enabled

Configuration:	When running frame relay RAW 1490, the local IP address and peer router IP
Note	address must be set in the IP parameters menu.

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