![]() This is the interface that connects to your internal private network The following procedure will help you to configure NAT Overload or Port Address Translation (PAT) in Cisco IOS:Įnable an interface on the router with an IP Address and mark it as nat inside interface. Typical network configuration would be on an Internet Router which enables all the hosts in the LAN to connect to the Internet using one single Public IP address. Here, the source IP and the source port get translated to the Public IP and a different source port. NAT Overloading translates many private IP addresses from a Local Area Network (LAN) onto a single registered legal Public IP address. This is called as Port Address Translation (PAT) or even Network Address Port Translation (NAPT). ![]() We will focus on Overloading form of NAT. Other benefits of NAT include security and economical usage of the IP address ranges at hand. For example a complete network with 100 hosts can have 100 private IP addresses and still be visible to the outside world (internet) as a single IP address. ![]() The main purpose of NAT is to hide the IP address (usually private) of a client in order to reserve the public address space. ![]() Network Address Translation is of different types like NAT (Network Address Translation), it in simple terms translates an IP address into another.
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