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Annotated edit history of NAT version 6 showing authors affecting page license. View with all changes included.
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1 PerryLorier 1 An [Acronym] for __N__etwork __A__ddress __T__ranslation.
2
3 [NAT] is an evil scheme to change [IP]s as they travel through a gateway. A common special case is “masquerading”, where multiple machines appear to have the gateway's [IP] address, which is necessary if you have multiple machines trying to communicate with remote hosts on the InterNet but the [ISP] only gave you one [IP] address.
2 CraigBox 4
5 PerryLorier 5 If you are trapped behind [NAT] and need a realworld [IP], consider using [Teredo] to get yourself a realworld IPv6 address.
6
7 !!! Types of [NAT]
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6 AristotlePagaltzis 9 __Full cone__:
10 Packets arriving at the [NAT] device for a [Port] previously used by the [NAT] device to send out packets will be routed to the host inside.
11 <br> __Restricted cone__:
12 This is like full cone, except that the internal host must have spoken to the remote host at some point in the past.
13 <br> __Port restricted cone__:
14 This is like restricted cone but they must have spoken to the same [IP]:[Port] before.
15 <br> __Symmetric__:
16 Uses a seperate [Port] for every [IP]:[Port] pair. This cannot work with [Teredo] or [STUN]. This is the worst kind of [NAT].
5 PerryLorier 17
6 AristotlePagaltzis 18 !!! See also
5 PerryLorier 19
6 AristotlePagaltzis 20 * RFC:1631
21 * RFC:3489
22 * [NAPT]
23 * [Teredo]
24 * [STUN]