Port 0: The Port That Doesn't Exist
Port 0 is reserved in TCP and UDP, yet bind(0) asks the kernel for a free port and ssh -R0 asks a server for one. How each case works, with Linux and Node.js examples.
The latest revisions across our writing on tunnels, networking, self-hosting, self-hosted LLMs, and AI - freshest updates first.
Port 0 is reserved in TCP and UDP, yet bind(0) asks the kernel for a free port and ssh -R0 asks a server for one. How each case works, with Linux and Node.js examples.
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