When a site or service asks for your SSH key, they are referring to your SSH public key. If someone else adds your public key to their server, you will be able to log in to that server. You can freely share your public key with others. The public key is placed on the server you intend to log in to. This guide explains how the SSH key login scheme works, how to generate an SSH key, and how to use those keys with a Linode Linux server.ĭo not share your private key with others.Ī public key. For example, you can set up periodic updates for your servers with a configuration management tool like Ansible, and you can run those updates without having to be physically present. Since a password isn’t required, you can log in to servers from within scripts or automation tools that you need to run unattended. If a server that uses SSH keys is compromised by a hacker, no authorization credentials are at risk of being exposed. ![]() Key-based login is not a major target for brute-force hacking attacks. Using key-based authentication offers a range of benefits, including: Password authentication is the default method most SSH clients use to authenticate with remote servers, but it suffers from potential security vulnerabilities like brute-force login attempts. ![]() Public key authentication with SSH (Secure Shell) is a method in which you generate and store on your computer a pair of cryptographic keys and then configure your server to recognize and accept your keys.
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