SSH / SFTP
SSH provides authenticated encrypted remote sessions. SFTP is a file-transfer subsystem over SSH and normally shares its connection. Product-specific listeners can override the usual port.
Scope: SSH / SFTP — requirements depend on the selected profile.
protocol · Catalog reviewed 2026-09-27
InfrastructureOpen Standard
Infrastructure Requirements
- Reachable configured SSH listener
- authorized user/key and host-key trust
- enabled SFTP subsystem when file transfer is needed.
Network & Physical Requirements
| Port / allocation | Transport | Connection / signal flow | Feature and requirement | Evidence |
|---|---|---|---|---|
| 22 (default) | TCP | Administration / file-transfer client → SSH server | Profile requirement · Core SSH transport and optional SFTP subsystem SSH conventional service | Source checked 2026-09-27 RFC 4253, Section 4.1: Use over TCP/IP |
Gotchas & IT Notes
- ⚠Restrict administration roles and credentials. SFTP is distinct from FTP/FTPS; SCP availability and behavior depend on the server.