NAT

definitions

• In computer networking, network address translation (NAT) provides a method of modifying network address information in Internet Protocol (IP) datagram packet headers while they are in transit across a traffic routing device for the purpose of remapping one IP address space into another.
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key word

• Full-cone NAT
• (Address)-restricted-cone NAT
• Port-restricted cone NAT
• Symmetric NAT

ref

• http://en.wikipedia.org/wiki/Network_address_translation