Implementing Static & Dynamic NAT - dynamic nat configuration - how to configure nat on cisco
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The term inside in a Network Address Translation (NAT) context refers to networks owned by an organization that must be translated. When NAT is configured, hosts within this network will have addresses in one space (known as the local address space) that will appear to those outside the network as being in another space (known as the global address space).
Similarly, the term outside refers to those networks to which the stub network connects, and which are generally not under the control of an organization. Hosts in outside networks can also be subject to translation, and can thus have local and global addresses.
NAT uses the following definitions:
Inside local address—An IP address that is assigned to a host on the inside network. The address is probably not a legitimate IP address assigned by the Network Information Center (NIC) or service provider.
Inside global address—A legitimate IP address (assigned by the NIC or service provider) that represents one or more inside local IP addresses to the outside world.
Outside local address—The IP address of an outside host as it appears to the inside network. Not necessarily a legitimate address, it is allocated from the address space that is routable on the inside.
Outside global address—The IP address assigned to a host on the outside network by the owner of the host. The address is allocated from a globally routable address or network space. more infor visit
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