How can I use SSH key without password?

Follow the steps below to set up SSH without passwords on your Linux system.

  1. Generate A New SSH Key Pair on Local Machine.
  2. Copy Public Key to Remote Machine.
  3. Add Private Key to SSH Authentication Agent on Local Server.
  4. Login to Remote Server Using SSH Keys.

How do you securely setup SSH login without a password on a remote machine?

How to Set Up Passwordless SSH Login

  1. Before You Start: Check for Existing SSH Keys.
  2. Step 1: Generate SSH Key Pair.
  3. Step 2: Upload Public Key to Remote Server. Option 1: Upload Public Key Using the ssh-copy-id Command.
  4. Step 3: Log in to Server Without Password.
  5. Optional: Troubleshooting Remote Server File Permissions.

How do I log into SSH with private key?

  1. Generate an ssh public/private key pair. Double-click on puttygen.exe.
  2. Copy the PUBLIC key onto your Unix server.
  3. Login using your private key.
  4. Use a passphrase agent.
  5. Generate an ssh public/private key pair.
  6. Copy the PUBLIC key onto your Unix server.
  7. Login using your private key.
  8. Use a passphrase agent.

How do I enable SSH key authentication in Linux?


  1. Use the ssh-keygen tool to create a key pair.
  2. Validate that the keys were generated.
  3. Enable key-based authentication in the /etc/ssh directory on the SSH server.
  4. Copy the rsa.
  5. If you have an existing authorized_keys file, edit it to remove any no-pty restrictions.

How do I SSH a password?

How to Connect via SSH

  1. Open the SSH terminal on your machine and run the following command: ssh your_username@host_ip_address.
  2. Type in your password and hit Enter.
  3. When you are connecting to a server for the very first time, it will ask you if you want to continue connecting.

How do I generate a PEM file to SSH without a password in Linux?

Tech: Setup ssh login with pem file without password on ubuntu/linux server

  1. mkdir pem.
  2. ssh-keygen -b 2048 -f identity -t rsa.
  3. cat >> ~/.ssh/authorized_keys.
  4. nano ~/.ssh/authorized_keys.
  5. sudo nano /etc/ssh/sshd_config.
  6. PasswordAuthentication no.
  7. sudo service ssh restart.
  8. cat ~/.ssh/pem/identity.

How do I SSH to a Linux key?

How to set up SSH keys

  1. Create the ssh key pair using ssh-keygen command.
  2. Copy and install the public ssh key using ssh-copy-id command on a Linux or Unix server.
  3. Add yourself to sudo or wheel group admin account.
  4. Disable the password login for root account.

How do I disable password login and implement key based authentication?

Stage III: Disable Password Login on Your Remote Server and Require SSH Key Authentication

  1. Open the sshd_config file found in /etc/ssh/ with your favorite text editor, e.g.: vim /etc/ssh/sshd_config .
  2. Find the line which says PermitRootLogin yes and change it to PermitRootLogin without-password .

How do I remove a password from Linux?

6 Answers

  1. First, if your user has sudo privileges, you must enable its NOPASSWD option. Otherwise, sudo will ask for a password even when you don’t have one, and won’t accept an empty password.
  2. Delete the password for your user by running this command: sudo passwd -d `whoami`