Secure your SSH connection disabling SSH password logins
Luigi Laezza
- Open Terminal.
- Paste the text below, substituting in your GitHub email address.
ssh-keygen -t rsa -b 4096 -C "your_email@example.com"
- This creates a new ssh key, using the provided email as a label.
Generating public/private rsa key pair.
- When you’re prompted to “Enter a file in which to save the key,” press Enter. This accepts the default file location.
Enter a file in which to save the key (/Users/you/.ssh/id_rsa): [Press enter]
- At the prompt, type a secure passphrase. For more information, see “Working with SSH key passphrases”.
Enter passphrase (empty for no passphrase): [Type a passphrase] Enter same passphrase again: [Type passphrase again]
Now we need to connect to the server , we use DigitalOcean for our projects, which leaves us all the freedom we need for our projects.
ChallengeResponseAuthentication no PasswordAuthentication no UsePAM no sudo service ssh restart
Test in a new terminal windows that the password login is disabled:
HostName 12.12.12.12
port 22
User myuser
PreferredAuthentications publickey
IdentityFile ~/.ssh/id_rsa
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