Oracle Linux : Cannot Add 'chacha20-poly1305@openssh.com' into 'Ciphers' list in File /etc/ssh/sshd_config (Doc ID 2916989.1)

Last updated on DECEMBER 23, 2022

Applies to:

Linux OS - Version Oracle Linux 6.0 and later
Linux x86-64

It is possible to come into below error when following note 2539433.1 to harden sshd service,

After testing by adding ciphers one by one, it is concluded 'chacha20-poly1305@openssh.com' is the offending one.

Following note 2539433.1 to harden sshd service.

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Symptoms

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