What Are Ports? Explained Simply with Real Examples (SMTP, IMAP, IANA)
Автор: TechTalk Simplified
Загружено: 2025-11-13
Просмотров: 5
Understanding ports is essential to understanding how the internet actually works.
In this video, I explain why we need ports, how a single server can run multiple services at the same time, and how ports help computers know which service you’re trying to reach.
I also cover:
🔹 Why ports are standardized and reserved by IANA
🔹 How well-known ports (0–1023) make communication easier
🔹 Examples using Gmail’s mail servers
— Port 25 → SMTP (server-to-server mail sending)
— Port 587 → SMTP submission
— Port 993 → IMAP over SSL/TLS
🔹 How ports allow the same server to run many applications in parallel
Whether you’re a beginner or brushing up your networking basics, this video explains ports in simple, real-world terms.
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