![]() By now you understand how both Static & Dynamic NAT work so we won't get into the details again. NAT Overload is a mix of Static & Dynamic NAT with a few enhancements thrown in ( PAT- Port Address Translation) to make it work the way we need. It's very important you understand them because NAT Overload is based on these Ports in order to identify sessions between hosts. ![]() NOTE: You should be familiar with TCP/IP & UDP communications, as well as how they use various Ports in order to identify the resources/applications they are trying to use. ![]() ![]() The different names logically come from the way NAT Overload works, and you'll understand this by the time we're finished with the topic. This NAT mode is also know by other names, like NAPT (Network Address Port Translation), IP Masquerading and NAT with PAT (Port Address Translation). Whether you use a router, firewall appliance, Microsoft's Internet sharing ability or any 3rd party program that enables all your home computers to connect to the Internet via one connection, you're using NAT Overload. This is because of the way it functions and the limitations it can overcome, and we'll explore all of these in the next two pages. ![]() NAT Overload is the most common NAT method used throughout all networks that connect to the Internet. ![]()
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