SSH question

[Tobias Heinemann]

David Mummery wrote:
 > I'm trying to setup password-less SSH login using public/private 
keypair but am failing. All the documentation tells me to do the same 
thing but it does not work:
 >
 > On my remote machine, as root, I run:
 >
 > ssh-keygen -t rsa
 >
 > - Enter and confirm passphrase
 >
 > cp /root/.ssh/i_rsa.pub /root/.ssh/authorised_keys
 >
 > chmod 644 /root/.ssh/authorised_keys
 >
 > I then copy authorised_keys to the machine I want to connect from, as 
root, and put it into /root/.ssh/authorised_keys
 >
 > I then chmod 644 this file.

I always use DSA encryption but if RSA works the same way, you will have
to do the following:

On the local machine you want to login from, do

   ssh-keygen -t rsa

Under ~/.ssh there should now be two files called id_rsa and id_rsa.pub.
Copy the latter one to the remote server:

   scp ~/.ssh/id_rsa.pub remote.server.com:

Log into the remote server via SSH:

   ssh remote.server.com

Once logged in, add the public key to the list of authorized keys:

   cat ~/id_rsa.pub >> ~/.ssh/authorized_keys

If you like, you can now delete the public key file:

   rm ~/id_rsa.pub

That's it. Next time you log into your remote server via SSH, you
shouldn't be prompted for a password (unless you entered a passphrase
when creating the SSH key that is...)

Regards,
Tobi