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Private and Public IP Addresses (view source)

Revision as of 16:00, 10 January 2018

1,188 bytes removed ,  16:00, 10 January 2018
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''192.168.0.0 - 192.168.255.255 (Total Addresses: 65,536)''
 
''192.168.0.0 - 192.168.255.255 (Total Addresses: 65,536)''
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==Network Address Translation==
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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.
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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:
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[[File:Private public ip 3 v2.png]]
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The scheme above roughly describes how devices with private IP addresses communicate with a remote host on the Internet (and ''vice versa'') with the help of NAT. Bellow the scheme is a depiction of a NAT mapping table. It illustrates how the router differentiates to which device in the local network to redirect incoming data packets.
      
==IP Address Terminology==
 
==IP Address Terminology==
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