At this point you’ll need to enter the passphrase for the private key: If you’re using the sample box, the username is ‘example’. When you click open now, you should be prompted for the username you’d like to log in as. In the settings you can configure a key file to use: And then in the menu on the left select SSH, and then Auth. We will connect to localhost, on port 2222 (the port that Vagrant exposes SSH to by default). To manually use the key, we can configure PuTTY to connect to our box. Now that we have a Linux machine with the public key installed, let’s connect to it. If you’re using the VM, choose ‘Save public key’ to overwrite key.pub in the files subfolder, and then run vagrant up to create the virtual machine. If you’d like a computer to try this with, you can create a VM using the Vagrantfile here.
At this point you should copy the public key to the ~/.ssh/authorized_keys file on the computer you’d like to connect to. Give it a secure passphrase, and then save the private key somewhere safe. Open PuTTYgen, and click the generate button to start creating a key:Īfter simulating an earthquake with your mouse, you should have a shiny new SSH key. We’ll use one of those to generate a key to use with SSH later. When you download PuTTY, you don’t just get PuTTY, you get various other tools as well. Let’s walk through generating a key and then using it with PuTTY.
The default tool for SSH connections on Windows is PuTTY. At the very end I’ll show how to setup P圜harm to connect using the key in SSH Agent, which is the same on all platforms. Feel free to skip ahead to the section that’s relevant for your OS. Let’s have a look how to do this on Windows, Mac, and Linux. So how can we be lazy while still maintaining security? SSH Agent is the answer! Rather than typing the passphrase to your key individually for every connection, we can type it only once when we turn the computer on, and then SSH agent will keep the decrypted key safe in memory. And as is best practice, we also protect our private key with a passphrase, don’t we? Ideally the passphrase is long and complicated, and therefore a massive pain to type.
Security is important, and that’s why we all use key pairs when authenticating to our servers.
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