Network Address Translation (NAT) enables hosts on private networks to access resources on the Internet or other public networks. NAT is an IETF standard that enables a LAN to use one set of IP addresses for internal traffic, typically private address space as defined in RFC 1918, and another set of addresses for external traffic, typically publicly registered IP address space. NAT converts the packet headers for incoming and outgoing traffic and keeps track of each session. NAT offers the dual functions of security and address conservation, and is typically implemented in remote-access environments. The key to understanding, and . . .
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