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Unable To Ssh Into Server After Patching To Solaris 11.4 SRU 31 (Solaris 11.4.31.0.1.88.5) (Doc ID 2773925.1)

Last updated on DECEMBER 08, 2021

Applies to:

Solaris Operating System - Version 11.4 and later
Oracle Solaris on x86-64 (64-bit)
Oracle Solaris on SPARC (64-bit)

Symptoms

We have patched a server running Solaris 11.4 from SR SRU 27.82 (11.4-11.4.27.0.1.82.1) to SRU 31.88 (11.4-11.4.31.0.1.88.5), however after patching we are not able to ssh into that server and it throws an error "no kex alg" when we try to ssh with a non-Solaris ssh client.

 

From a Solaris ssh client it throws the following error:

# ssh <HOST>

Unable to negotiate with <IP> port <PORT>: no matching key exchange method found. Their offer: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256

 

 

 

Cause

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In this Document
Symptoms
Cause
Solution


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