4/20/2021 0 Comments Ssh Keygen Examples
Keys will also automatically be added to ssh-agent every time you restart your machine.This tutorial will walk you through the basics of creating SSH keys, and also how to manage multiple keys and key pairs.Create a New SSH Key Pair Open a terminal and run the following command: ssh-keygen You will see the following text: Generating publicprivate rsa key pair.Enter file in which to save the key (homeusername.sshidrsa): Press enter to save your keys to the default homeusername.ssh directory.
Ssh Examples Password Here ForThen youll be prompted to enter a password: Enter passphrase (empty for no passphrase): Its recommended to enter a password here for an extra layer of security. By setting a password, you could prevent unauthorized access to your servers and accounts if someone ever gets a hold of your private SSH key or your machine. After entering and confirming your password, youll see the following: Your identification has been saved in homeusername.sshidrsa. Manage Multiple SSH Keys Though its considered good practice to have only one public-private key pair per device, sometimes you need to use multiple keys or you have unorthodox key names. For example, you might be using one SSH key pair for working on your companys internal projects, but you might be using a different key for accessing a clients servers. On top of that, you might be using a different key pair for accessing your own private server. Managing SSH keys can become cumbersome as soon as you need to use a second key. Traditionally, you would use ssh-add to store your keys to ssh-agent, typing in the password for each key. The problem is that you would need to do this every time you restart your computer, which can quickly become tedious. A better solution is to automate adding keys, store passwords, and to specify which key to use when accessing certain servers. SSH config Enter SSH config, which is a per-user configuration file for SSH communication. Create a new file:.sshconfig and open it for editing: nano.sshconfig Managing Custom Named SSH key The first thing we are going to solve using this config file is to avoid having to add custom-named SSH keys using ssh-add. Assuming your private SSH key is named.sshidrsa, add following to the config file: Host github.com. Now if you try closing a GitHub repository, your config file will use the key at.sshidarsa. Here are some other useful configuration examples: Host bitbucket-corporate. You no longer need to enter a port and username every time you SSH into your private server. Password management The last piece of the puzzle is managing passwords. It can get very tedious entering a password every time you initialize an SSH connection. To get around this, we can use the password management software that comes with macOS and various Linux distributions. Start by adding your key to the Keychain Access by passing -K option to the ssh-add command: ssh-add -K.sshidrsawhatever Now you can see your SSH key in Keychain Access: But if you remove the keys from ssh-agent with ssh-add -D or restart your computer, you will be prompted for password again when you try to use SSH. Open your SSH config file by running nano.sshconfig and add the following: Host.
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