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What is "local host"? What is 127.0.0.1?
The IP address 127.0.0.1 is a reserved IP address specified in the Internet Protocol used to represent the host computer, whichever computer you happen to be sitting in front of with TCP/IP capabilities. This is often necessary as a background way for TCP/IP to route packets from the host to itself. But it is often used as a simple troubleshooting procedure. You can send data to and from yourself to test the installation of TCP/IP. Type "ping 127.0.0.1" from a command prompt. If you get no response, or "destination host unreachable", it's time to reinstall TCP/IP. If you get responses, they should show extremely low ping times, like 0.1ms or less. (TCP/IP may still need to be reinstalled, if it's not possible to ping elsewhere.)
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