Endlessh is an SSH tarpit that very slowly sends an endless, random SSH banner. It keeps SSH clients locked up for hours or even days at a time. The purpose is to put your real SSH server on another port and then let the script kiddies get stuck in this tarpit instead of bothering a real server.

This is a companion discussion topic for the original entry at https://copr.fedorainfracloud.org/coprs/xoloitzcuintle/EndleSSH/