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Berkeley
ELENG 122 -
Network Address Translation
School name
University of California, Berkeley
Pages 5
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UCB Network Address Translation Jean Walrand U C Berkeley www eecs berkeley edu wlr UCB NAT Overview Example How NAT works UCB Overview Shortage of IP Addresses CIDR may not be enough IPv6 may take a long time until deployed NAT enables reuse of addresses See IETF RFC 1631 1994 Example UCB Home Network IPa typically DHCP NAT One IP address is visible outside IPb IPc DHCP with NAT DHCP with NAT IPb IPc UCB How it works Trick Use TCP port to distinguish computers IPa IPx TCPb TCPn IPb IPx TCPm TCPn IPa IPx IPa TCPn TCPb IPx NAT IPx IPb TCPn TCPm TCPb IPb TCPm IPb IPc
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