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First Connection Verification

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If you are connecting to a host via SSH for the first time, you will see a message like this:

 The authenticity of host '203.0.113.12 (203.0.113.12)' can't be established.
ECDSA key fingerprint is SHA256:tXw8aipPPyyL4KBAjTtBvHU7K//HzkXuTtdLij2yJ2U.
Are you sure you want to continue connecting (yes/no/[fingerprint])?

This message indicates that your system does not recognize the host you are trying to connect to. It is a standard precaution to ensure that you are not connecting to a fake or malicious server. 

Possible solution:

Confirm your intention to connect to the host by typing yes and pressing the Enter key.

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