Submitted by Brianprokpo456 t3_zx7osk in explainlikeimfive
interwebz_2021 t1_j210zsg wrote
Reply to comment by KrakenOfLakeZurich in ELI5: What is a network port? by Brianprokpo456
Excellent description. I often use the metaphor of an apartment building's mailboxes with "the internet" (really, the network elements, obv) being the postal service, the building being the IP address and the mailboxes being the ports, mapped to services/programs. So far, it's worked pretty well. This also lets me extend the discussion to TCP vs UDP, where I compare UDP to simply mailing a letter and TCP to requiring a signature verifying receipt.
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