setup remote login (without password) using ssh2

1. Check, on both local and remote that ssh2 (sshd2) has been installed and that any earlier ssh installation has been removed (files belonging to earlier installations can be found in $prefix/bin, /etc/ssh, $prefix/sbin, $HOME/.ssh.
2. On local:

   mkdir $HOME/.ssh2

   (if it does not yet exist)
3. On remote:

   mkdir $HOME/.ssh2

   (if it does not yet exist)
4. On local:

   cd $HOME/.ssh2

5. On local:

   ssh-keygen2

   This generates a public-private key pair. Just hit ``return'' when asked for the pass phrase (if you provide a nonempty pass phrase, you will have to type it again each time you login to the remote system).
6. On local: check the names of the 2 files generated in $HOME/.ssh2: usually something like id_dsa_1024_a (private key) and id_dsa_1024_a.pub (public key).
   In what follows, I'll use these names; replace by the actual names if different. Of course, the private key file should be well protected, i.e. accessible only for user.
7. On local:

   echo "IdKey id_dsa_1024_a" >identification

   to tell ssh which key you will be using to identify yourself.
8. On local: copy the public key file id_dsa_1024_a.pub to the remote machine:

     scp2 d_dsa_1024_a.pub remote:.ssh2/user-local.pub
     

   (You will have to type your remote password).
9. On remote: create a file $HOME/.ssh2/authorization containing the line

     Key user-local.pub
     

10. On local:

    ssh remote

    should work without asking for a password or pass phrase.

export CVS_RSH=/usr/local/bin/ssh
export CVSROOT=:ext:user@remote:/path/to/cvsroot

• /path/to/cvsroot is the absolute path on remote to your cvs repository.
• /usr/local/bin is the path to the ssh(2) executable, replace by the real path on local.

See also the article `` OpenSSH key management'', part1 and part2 on IBM developerworks .