Appendix C: Overview of IP Routing

Network Address Translation (NAT) - Page 129

Network Address Translation (NAT)

NAT is a mechanism that allows IP addressing scheme to be hidden from any TCP/IP network to which TCP/IP traffic is routed. For example, an established network may be using a numbering scheme that is not consistent (non-compliant) with the Internet. There are many cost-effective ISP but they want you to use a different IP address. By using NAT between your machine and their network everyone is satisfied, and no need to renumber your network. An additional benefit is that all your machines can use the NAT facility and access the Internet via the one address.

The IPNC Network Address Translation (NAT) functionality allows an IP address or network (Internal) to be translated to single globally unique IP address (external). In this way non-compliant addressing schemes may be used in conjunction with Internet access.

Single IP Address Internet connectivity. Multiple-PC can simultaneously access the Internet via a single ISP account.

Network address translation (NAT) allows an existing TCP/IP network- addressing scheme to be used for connection to the Internet.

NAT is automatically enabled on the IPNC under the following connection scenarios:

Condition

NAT status

Service / Advanced IP Mask = 255.255.255.255

On

 

 

The IPNC is offered and accepts an IP address during the

On

IPCP stage of PPP link establishment.

 

Service / Advanced IP Address = Blank

 

A mask other than 32-bit is assigned to the Service.

Disabled.

 

 

A Service is configured with the same name as a User

Disabled.

INDeX IPNC Cassette Administration Manual

Appendix C: Overview of IP Routing - Page 129

38DHB0002UKDD – Issue 7 (22/11/02)

Network Address Translation (NAT)

Page 129
Image 129
Avaya 38DHB0002UKDD manual Network Address Translation NAT, Condition NAT status

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