Perle Systems 1700 - Manual (Page 58)

Applications
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Network Address Translation and Port Translation
The P1705 & P1730 provide 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
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Configuration
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Applications Set-up
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NAT Exports
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Edit Services
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enter the private network IP address of
each service offered
Then NAT (Network Address Translation) is enabled:
NAT Enable
Location: Main
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Configuration
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WAN Set-up
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Remote Site Set-up
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Edit Remote Site
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Protocol Set-up
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IP Parameters
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NAT 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.