Re: Putty + Ubuntu +SSH + Public/Private Keys = Not Working (Server refused our key)

First:

After you've created your putty key under Windows (puttykey.ppk), copy it to your Ubuntu server. We'll assume you have it in your home directory on your Ubuntu server which is ~/.

So, that file is now ~/puttykey.ppk

On your Ubuntu box, run a terminal (or SSH in from your Windows box) and:

Code:

sudo apt-get install putty

When that's done, you now have putty on Ubuntu. Next do:

Code:

puttygen ~/puttykey.ppk -L > ~/.ssh/id_rsa.pub

If you're not familiar with Unix/Linux then you won't realize this, but the key output is being redirected to a file named "id_rsa.pub" in the .ssh directory in your home directory on the Ubuntu server.

Finally, create the private key on Ubuntu using:

Code:

puttygen ~/puttykey.ppk -O private-openssh -o ~/.ssh/id_rsa

Now you should be able to do public key logins to Ubuntu. You MAY still have an issue due to permissions, so I'd recommend also doing:

Code:

chmod 700 .ssh
chmod 600 .ssh/id_rsa*

Good luck.