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Network Address Translation (view source)

Revision as of 15:49, 12 January 2018

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'''Network address translation''' ('''NAT''') is a method of remapping one IP address space into another by modifying network address information in IP header of packets while they are in transit across a traffic routing device. Or to put it in plain terms, NAT allows devices with private IP addresses to communicate with hosts via the internet using IP masquerading.
 
'''Network address translation''' ('''NAT''') is a method of remapping one IP address space into another by modifying network address information in IP header of packets while they are in transit across a traffic routing device. Or to put it in plain terms, NAT allows devices with private IP addresses to communicate with hosts via the internet using IP masquerading.
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'''IP masquerading''' is a technique that hides an entire IP address space, usually consisting of private IP addresses, behind a single IP address in another, usually public address space. The address that has to be hidden is changed into a single (public) IP address as "new" source address of the outgoing IP packet so it appears as originating not from the hidden host but from the routing device itself:
   
==Why do we need NAT?==
 
==Why do we need NAT?==
  
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