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ssh Command Line

Create public and private keys using ssh-key-gen on local machine.

$> ssh-keygen

Generating public/private rsa key pair.
Enter file in which to save the key (/home/martin/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/martin/.ssh/id_rsa.
Your public key has been saved in /home/martin/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:sfuidygosifudyosiduygosidfuygosiduygisdyuiy martin@local

Copy the public key to remote-host using ssh-copy-id

$> ssh-copy-id -i ~/.ssh/id_rsa.pub martin@192.168.0.1

martin@192.168.0.1 password:

Number of key(s) added: 1

PuTTY

Generate PuTTY Key

Putty (for windows) doesn’t support OpenSSH keys directly so we need to create a new ssh key for Putty. The PuTTYgen tool can do this.

• Open PuTTYgen application

• Click Conversions from the PuTTY Key Generator menu and select Import key.

• Navigate to the OpenSSH private key and click Open.

• Under Actions / Save the generated key, select Save private key.

• Choose an optional passphrase to protect the private key.

• Save the private key as id_rsa.ppk.

Add key to PuTTY

• Enter the remote server Host Name or IP address under Session.

• Navigate to Connection > SSH > Auth.

• Click Browse... under Authentication parameters / Private key file for authentication.

• Locate the id_rsa.ppk private key and click Open.

• Finally, go back to the Session on the menu and click Save

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