putty

Links

Utility

ssh

Download puttygen.exe from the putty download page: http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
Run puttygen.exe (it has no installer):
Select Type of key to generate, RSA

Note

18/01/2020, I can’t get Ed25519 working with Ubuntu 18.04. I get errors like this:

sshd[1556]: rexec line 15: Deprecated option UsePrivilegeSeparation
sshd[1556]: rexec line 18: Deprecated option KeyRegenerationInterval
sshd[1556]: rexec line 19: Deprecated option ServerKeyBits
sshd[1556]: rexec line 30: Deprecated option RSAAuthentication
sshd[1556]: rexec line 37: Deprecated option RhostsRSAAuthentication

Generate the key pair. Do not enter a passphrase or you will need to enter the password each time you want to use the key.

Save a copy of the Public key for pasting into OpenSSH authorized_keys file using the Key comment as the name with an extension of authorized_keys.txt.
Save the public key, using the Key comment as the name with an extension of pub.
Save the private key, using the Key comment as the name with an extension of ppk.

Tip

The following steps must be done for the user which you will be using for the password-less login.

Create (or edit) the ~/.ssh/authorized_keys file on the server you want to log on to.
Paste the Public key for pasting into OpenSSH ``authorized_keys`` file (from your authorized_keys.txt file) into ~/.ssh/authorized_keys on your Linux server.
Start putty and select the private key file (extension ppk) in Connection, SSH, Auth.

You should now be able to log into the remote server without entering a password.

Tip

To create a shortcut to that automatically opens a session: putty.exe -load "mysession".

ssh tunnel

To create a tunnel, start by following the steps in the previous section:

Source port The port you want to use in your browser e.g. 8080 if you want to access your content via http://localhost:8080.
Destination The host name of your server and the port you want to tunnel to

Note

I find this weird because we already added the host name when we setup the ssh configuration.

Click Add to configure the tunnel.

Click Open to open the tunnel…

To close the session, close the terminal…