what is port number, in computer network terms
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I like to think about ports and addresses like boat slips in a harbor.
Imagine a harbor with one or more very long docks. Each dock has 65,545 slips, where a boat may dock.
These docks are your network addresses (e.g. 192.168.1.1) and each slip is a port where a connection may dock. Much like a docked boat in the way, only one connection per address:port combination is allowed at one time.
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