Configure OpenSSH to allow Public-key authentication

Create file touch ~/.ssh/authorized_keys and add public key of client to provide access.

Limit connecting host and command: It is also possible also to lock access to only be able to run a specific command, or use it only from a specific host . See man ssh.

Example syntax::cat ~/.ssh/authorized_keys

from="10.22.33.45",command="/path/to/executable argument" ssh-rsa key name

See also

• sudo
• Cisco IOS/Configure public RSA key authentication
• Digital Media Concepts/RSA (cryptosystem)

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Original Source: https://en.wikiversity.org/wiki/OpenSSH/Configure_OpenSSH_to_allow_Public-key_authentication