20 pages RFC 4250 The Secure Shell (SSH) Protocol Assigned Numbers 2006-01 Proposed Standard RFC Updated by rfc8268 , rfc9142 , rfc9519 Russ Housley 30 pages RFC 4251 The Secure Shell (SSH) Protocol Architecture 2006-01 Proposed Standard RFC Updated by rfc8308 , rfc9141 Russ Hous…