After Applying Latest Patch Bundle. Solaris 10. ssh stopped working ;error: fatal: matching cipher is not supported: arcfour128 (Doc ID 2138572.1)

Last updated on FEBRUARY 10, 2017

Applies to:

Solaris Operating System - Version 10 10/09 U8 and later
Information in this document applies to any platform.

Symptoms

After applying  Solaris 10 sparc cluster patches dated 04-14-2016 and rebooting the system, customer was  not able to ssh  to  Solaris server.Found following error in the /var/adm /messages file.

" sshd[14613]: [ID 800047 auth.crit] fatal: matching cipher is not supported: arcfour128"

Changes

 The arcfour128 and arcfour256 are weak ciphers and  not supported ciphers in Solaris 10

Cause

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