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. Noteĭo not share your private key with others.Ī public key, usually named id_rsa.pub. This guide explains how the SSH key login scheme works, how to generate an SSH key, and how to use those keys with your Linode. For example, you can set up periodic updates for your servers with a configuration management tool likeĪnsible, and you can run those updates without having to be physically present. If a server that uses SSH keys is compromised by a hacker, no authorization credentials are at risk of being exposed.īecause a password isn’t required at login, you can log into servers from within scripts or automation tools that you need to run unattended.
Key-based login is not a major target for brute-force hacking attacks.
Using key-based authentication offers a range of benefits: Public key authentication with SSH, 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. An alternative to password authentication is using Password authentication is the default method most SSH (Secure Shell) clients use to authenticate with remote servers, but it suffers from potential security vulnerabilities like brute-force login attempts.
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