Sftp/ssh to upgraded Solaris 11.3 system gives error: Disconnecting: Protocol error: no matching DH grp found
Last updated on AUGUST 29, 2017
Applies to:Solaris Operating System - Version 11.3 and later
Information in this document applies to any platform.
When a SSH client tries to sftp/ssh to a server which was upgraded to Solaris 11.3 , it fails with the above error.
Running sshd debug shows error as below:
WARNING: no suitable primes in /etc/ssh/primes
Disconnecting: Protocol error: no matching DH grp found
That is the error the client sees in initial logs of their application which does sftp/ssh.
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