Generating SSH Key in CentOS 7
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Summary: Learn how to generate an SSH key pair on CentOS 7 for secure authentication and access management. Follow these step-by-step instructions to create SSH keys on CentOS 7.
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SSH (Secure Shell) keys provide a secure way to authenticate and connect to remote servers without having to rely on passwords. In CentOS 7, you can generate SSH key pairs using the ssh-keygen utility. Here’s a step-by-step guide on how to do it:
Step 1: Open Terminal
First, open a terminal on your CentOS 7 system. You can do this by clicking on the terminal icon or using the shortcut keys Ctrl+Alt+T.
Step 2: Run ssh-keygen
In the terminal, type the following command to generate a new SSH key pair:
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Replace “your_email@example.com” with your email address. This command tells ssh-keygen to create a new RSA key pair with a 4096-bit key size.
Step 3: Choose Key File Location
You will be prompted to choose the location to save the SSH key pair. Press Enter to save the key pair in the default location (~/.ssh/id_rsa), or specify a different path if desired.
Step 4: Enter Passphrase (Optional)
You can choose to secure your SSH key with a passphrase for added security. Enter a passphrase when prompted, or press Enter to skip this step.
Step 5: Confirm Key Generation
Once you’ve entered the passphrase (or skipped it), ssh-keygen will generate your SSH key pair. You should see output confirming that the key pair has been created successfully.
Step 6: View Your Public Key
To view your newly generated public key, use the following command:
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This will display your public key in the terminal. You can now copy this public key and add it to the authorized_keys file on any remote server you wish to access using SSH key authentication.
That’s it! You’ve successfully generated an SSH key pair on CentOS 7. Remember to keep your private key (~/.ssh/id_rsa) secure and never share it with anyone.
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