SSH on Frank Zhang: Engineering Noteshttps://www.fzhang.dev/en/tags/ssh/Recent content in SSH on Frank Zhang: Engineering NotesHugoenWed, 11 Nov 2026 10:30:00 +0800ssh: connect to host port 22: Connection refused, from a Mac or into a Machttps://www.fzhang.dev/en/posts/ssh-connection-refused-port-22-mac/Wed, 11 Nov 2026 10:30:00 +0800https://www.fzhang.dev/en/posts/ssh-connection-refused-port-22-mac/Connection refused means this TCP attempt was not accepted. See whether you are leaving the Mac or logging into it, then read the real host, port, and listener before you change Remote Login or sshd.SSH known_hosts fix command generatorhttps://www.fzhang.dev/en/tools/known-hosts-fix/Mon, 01 Jan 0001 00:00:00 +0000https://www.fzhang.dev/en/tools/known-hosts-fix/Parses SSH host key errors in your browser and generates verify, find, remove and reconnect commands.