Why does leapp failed with "Inhibitor:OpenSSH configured to use removed ciphers"?

Solution Verified - Updated -

Issue

  • Leapp upgrade failed with inhibitor OpenSSH configured to use removed ciphers

    Risk Factor: high (inhibitor)
Title: OpenSSH configured to use removed ciphers
Summary: OpenSSH is configured to use removed ciphers blowfish-cbc,cast128-cbc. These ciphers were removed from   OpenSSH and if present the sshd daemon will not start in RHEL 8
Remediation: [hint] Remove the following ciphers from sshd_config: blowfish-cbc,cast128-cbc

Environment

  • Red Hat Enterprise Linux 7.
  • Red Hat Enterprise Linux 8.
  • Leapp.

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