Computer Ports EXPLAINED | Port Number | Port Forwarding | Network Concepts скачать в хорошем качестве

Computer Ports EXPLAINED | Port Number | Port Forwarding | Network Concepts

Ever wondered how one laptop can browse Google, stream Netflix, attend Zoom calls, run WhatsApp, and play games — all at the same time using ONE IP address? 🤯 The secret is PORTS. In this video, we break down ports in networking from absolute basics to deep internals — slowly, visually, and clearly. 🔍 In this video, you’ll learn: ✔ What a port really is (beyond “HTTP = 80”) ✔ Why we have 65,535 ports (and not more or less) ✔ How IP + Port + Protocol = Socket ✔ Why two apps cannot bind to the same port ✔ Difference between well-known, registered & ephemeral ports ✔ How browsers use random ports for every tab ✔ TCP vs UDP ports (reliability vs speed) ✔ Why DNS uses Port 53 ✔ Why firewalls block 22, 3389, 21 ✔ How NAT rewrites ports at home ✔ Why games need open ports / UPnP / NAT types ✔ How servers “listen” and clients “connect” By the end, ports will no longer feel abstract — you’ll see exactly how they keep the internet from collapsing. 🎯 Perfect for: Networking beginners CCNA / interview prep Cloud & DevOps learners Cybersecurity basics Anyone confused by ports & firewalls 👉 Like & Subscribe if networking finally makes sense 👉 Comment “PORTS” if you want a firewall & hacking-focused follow-up #Networking #Ports #HowInternetWorks #CCNA #CyberSecurity #TCPUDP #Firewall #NAT #TechExplained #computernetworking 0:00 Ports are logical numbers identifying specific applications on a device. 1:30 IP identifies the device; ports identify the specific process or app. 3:00 Ports enable multiplexing and isolate traffic between apps like Chrome and Gmail. 4:30 There are 65,535 ports available, derived from a 16-bit number system. 6:00 IANA standardizes ports: HTTP (80), HTTPS (443), and DNS (53). 7:30 Ephemeral ports are assigned by the OS for temporary outgoing connections. 9:00 A socket combines IP address, port, and protocol to uniquely identify traffic. 10:30 Firewalls block specific ports to control or restrict network application access. 12:00 Browser tabs use unique ports to keep separate web sessions distinct. 13:00 Ports function at the transport layer to manage communication.