What Is a Port Number? Why 80, 443 and 22 Matter
Networking basics · TCP and UDP · Security An IP address gets data to the right computer. But that computer is running dozens of programs at once: a browser, a…
What Is DHCP? How Your Device Gets an IP Address Automatically
You walk into a café, tap the Wi-Fi name, and within a second the web works. Nobody typed an address, picked a gateway or told your phone where to find…