Ruroco – like port knocking, but better

In plain words

Ruroco is a remote command execution tool that uses UDP packets instead of traditional port knocking. It consists of three components: a client that sends packets from a user's computer, a server that validates them, and a commander that executes pre-configured commands. The server defines available commands, and clients select from existing options rather than defining new ones. A common use case is dynamically opening SSH ports only for the connecting user's IP address, making the port appear closed to others.

written from the facts on this page · September 2026

From the sources

Ruroco is a tool that lets you execute commands on a server by sending UDP packets. The commands are configured on the server side, so the client does not define what is going to be executed, it only picks from existing commands. - beac0n/ruroco

In the maker’s words, at launch

Hey there HN! ruroco (RUn RemOte COmmand) is a tool that lets you execute commands on a server by sending UDP packets (instead of knocking on ports). the tool consist of 3 binaries: - client -> runs on your notebook/computer and sends the UDP packets - server -> receives the UDP packets and makes sure that they…

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