2 entries are registered on port 22. It is a well-known port (0–1023) — assignments here are IANA's, and a service found on one is usually the service that was assigned it.
services registered on this number
2 transports in use
entries encrypted on the wire
2 of 2 iana-registered
Secure Shell (SSH) is a widely-used network protocol designed to provide secure access and communication with remote systems over an unsecured network. It encrypts login credentials, command execution, file transfers, and tunneling capabilities, making it a fundamental tool for system administrators and developers to securely manage servers and devices.
port 22 as SSH →SFTP transfers files through an encrypted SSH connection, normally on TCP port 22.
port 22 as SFTP →The registry says what 22 is registered to. What is listening on it right now is decided by the host, and only the host can be asked. Each of these prints the process behind the socket.
ss -ltnp | grep ':22\b'lsof -nP -iTCP:22 -sTCP:LISTENnetstat -ano | findstr :22On Linux and Windows the process name comes back with the socket; on macOS lsof needs sudo to name a process that isn't yours. Match what it prints against the 2 entries above.
A port number is not a service. Anything may listen on 22 — what you actually met is decided by the host, not the registry. If a service is missing here, it belongs in the registry.
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