Passwordless login using SSH

[jeraldpjose]

How can I configure ssh to do the passwordless logins between the users in a Linux server? I am using RHEL4.6 version. I have created some users in this server and I would like to login from one user to the other users in the same server without a password prompt by using SSH. I was using rsh for this purpose before, but since it is against our security policy , I have to switch to SSH.

I have done the ssh configuration by creating the keys and copying the public keys to the file .ssh/authorized_keys of the other users in the same server.
But unfortunately still I am not able to login to other users in the same system WITHOUT a Password.

I did the following settings.

From user1:

mkdir ~/.ssh
chmod 755 ~/.ssh
/usr/bin/ssh-keygen -t rsa
/usr/bin/ssh-keygen -t dsa
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
ssh user2@ds2 cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
ssh user2@ds2 cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
exec /usr/bin/ssh-agent $SHELL
/usr/bin/ssh-add

At user2 :
chmod 644 ~/.ssh/authorized_keys
exec /usr/bin/ssh-agent $SHELL
/usr/bin/ssh-add

But the strange thing is that I am able to connect to a user in a different server with out password. user1@ds2 to user1@ds3 . SSH is working properly here.

Could anyone help me to resolve the issue with the connection between two users in a same server? Its really urgent for me.

[JosePF]

Hello,
I think that if you do:

userx@client$ ssh-keygen -t rsa
[...]
Enter passphrase (empty for no passphrase):
[...]

userx@client$ ssh-copy-id -i ..ssh/id_rsa.pub userx@server

So userx have no to enter passphrase.

I hope this is what you want
Regards