This counts as a dupe because there was a significant discussion just a few months ago:<p><i>How SSH port became 22 (2017)</i> - <a href="https://news.ycombinator.com/item?id=39313170">https://news.ycombinator.com/item?id=39313170</a> - Feb 2024 (176 comments)<p>Earlier threads in case anyone's interested:<p><i>How SSH got port number 22</i> - <a href="https://news.ycombinator.com/item?id=33363795">https://news.ycombinator.com/item?id=33363795</a> - Oct 2022 (2 comments)<p><i>How SSH Port Became 22</i> - <a href="https://news.ycombinator.com/item?id=21350246">https://news.ycombinator.com/item?id=21350246</a> - Oct 2019 (81 comments)<p><i>How SSH port became 22</i> - <a href="https://news.ycombinator.com/item?id=17552100">https://news.ycombinator.com/item?id=17552100</a> - July 2018 (95 comments)<p><i>How SSH got port number 22</i> - <a href="https://news.ycombinator.com/item?id=14178091">https://news.ycombinator.com/item?id=14178091</a> - April 2017 (207 comments)