SSH client implemented in ABAP, over TCP/IP with 1 byte frame sizes = slow.
https://datatracker.ietf.org/doc/html/rfc4251 - The Secure Shell (SSH) Protocol Architecture https://datatracker.ietf.org/doc/html/rfc4252 - The Secure Shell (SSH) Authentication Protocol https://datatracker.ietf.org/doc/html/rfc4253 - The Secure Shell (SSH) Transport Layer Protocol https://datatracker.ietf.org/doc/html/rfc4254 - The Secure Shell (SSH) Connection Protocol