RFC 4250:The Secure Shell (SSH) Protocol Assigned ...
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1. Introduction


   This document does not define any new protocols.  It is intended only
   to create the initial state of the IANA databases for the SSH
   protocol and also contains instructions for future assignments.
   Except for one HISTORIC algorithm generally regarded as obsolete,
   this document does not define any new protocols or number ranges not
   already defined in: [SSH-ARCH], [SSH-TRANS], [SSH-USERAUTH],
   [SSH-CONNECT].



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