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The SSH/SFTP key fingerprint and its role in server authentication

Updated by John Carl Villanueva on

When users attempt to connect to your Secure File Transfer Protocol (SFTP) server for the first time, they’ll see an alert indicating that their client doesn’t recognize the host it’s connecting to. The warning usually includes a line that shows a key fingerprint and a prompt that asks the user whether to proceed with the connection attempt or not. Here are two examples illustrating what we’re referring to.

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Topics: Secure File Transfer, SFTP, key fingerprint, ssh, authentication

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