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Is it possible to verify in advance whether it is safe to remove the "CBC" cipher?

  1. Last updated
    Jun 11, 2025
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CORE
Last Updated:
6/11/2025, 2:51:54 AM

Applies to

Answer

  • Yes, it is possible to verify in advance whether it is safe to remove the CBC cipher.
  • Please ensure that your SSH client, such as TeraTerm, supports the encryption algorithms that will remain after the removal.
  • If the client does not support these algorithms, establishing new sessions may not be possible.

Note: You can determine which encryption algorithms are currently in use by checking the SSH client’s /etc/ssh/sshd_config file or reviewing the SSH log files.

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