A user test has set up SSH keys for passwordless authentication, but the server is still prompting for a password. Given the following output: Which of the following is the cause of this issue?

The correct answer is D. The user forgot to add the public key to the authorited_keys file. The empty authorized_keys (0 bytes) means SSH has no public key to match, so it falls back to password authentication. Copying id_rsa.pub into ~/.ssh/authorized_keys will resolve the issue.

Troubleshooting

Question

A user test has set up SSH keys for passwordless authentication, but the server is still prompting for a password. Given the following output: Which of the following is the cause of this issue?

Exhibit

Options

AThe RSA key does not meet the complexity requirements.
BThe passphrase needs to be provided when creating the key.
CThe wrong permissions are set on id_rsa file.
DThe user forgot to add the public key to the authorited_keys file.

How the community answered

(53 responses)

A
9% (5)
B
4% (2)
C
6% (3)
D
81% (43)

Explanation

The empty authorized_keys (0 bytes) means SSH has no public key to match, so it falls back to password authentication. Copying id_rsa.pub into ~/.ssh/authorized_keys will resolve the issue.

Topics

#SSH#Public Key Authentication#authorized_keys#Authentication Failure

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