Alcatel SPEED TOUCH PRO, User Manual

Page: 162 / 238

NA(P)T
In this section
12 Networking Services - IP
162 / 238
3EC 17059 ABAA TCZZA Ed. 01
12.6 Speed Touch NAT&PAT
Network Address Translation (NAT) is a technique that allows you
to shield or decouple an internal (Private) IP address from the
(negotiated) external (Public) IP address.
In addition, via Port Address Translation (PAT), this single external
Public IP address is mapped onto multiple internal ports on the
LAN, thus allowing multiple users to share this external IP address
simultaneously.
The amalgam of address & port allocation is often referred to as
Network Address and Port Translation (NA(P)T).
Note : NA(P)T is described in RFC3022 which obsoletes RFC1631 The IP
Network Translator (NAT)".
Topic See
STPro and NA(P)T 12.6.1
Packet Services and NA(P)T 12.6.2