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Does that mean that you automatically block IPs that try to login on port 22 (since they are obviously malicious/port scannners)? If yes, is there any specialized daemon for that or are you using firewall rules? Or are you running a SSH honeypot on port 22?

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The post is referring to this: https://github.com/skeeto/endlessh

I'm guessing that the person you replied to is referring to the same.

A tarpit is a technique to waste your opponents time and network sockets. Usually by accepting the connection but only sending or receiving data at like 1byte/s.

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