How to configure password less ssh login.

2.    Create the directory “.ssh” under home dir of manmohan as below:

[manmohan@kalwa1 ~]$ pwd
/home/manmohan
[manmohan@kalwa1 ~]$ mkdir .ssh
[manmohan@kalwa1 ~]$ ls -lal
total 28
drwx------. 3 manmohan manmohan 4096 Jun 27 22:37 .
drwxr-xr-x. 5 root     root     4096 May 31 20:13 ..
-rw-------  1 manmohan manmohan   10 Jun 27 22:37 .bash_history
-rw-r--r--. 1 manmohan manmohan   18 Jan 27  2011 .bash_logout
-rw-r--r--. 1 manmohan manmohan  176 Jan 27  2011 .bash_profile
-rw-r--r--. 1 manmohan manmohan  124 Jan 27  2011 .bashrc
drwxrwxr-x  2 manmohan manmohan 4096 Jun 27 22:37 .ssh

3.    Now generate the public key using the command “ssh-keygen”

[manmohan@kalwa1 ~]$ ssh-keygen
 Generating public/private rsa key pair.
 Enter file in which to save the key (/home/manmohan/.ssh/id_rsa):
 Enter passphrase (empty for no passphrase):
 Enter same passphrase again:
 Your identification has been saved in /home/manmohan/.ssh/id_rsa.
 Your public key has been saved in /home/manmohan/.ssh/id_rsa.pub.
 The key fingerprint is:
 f5:ec:f9:e6:38:cb:2b:d6:14:3d:06:31:47:f2:f3:df manmohan@kalwa1.home.com
 The key's randomart image is:
 +--[ RSA 2048]----+
|            +oo  |
|            .=   |
|          .  oo  |
|         . o. +o |
|        S   oo ..|
|           ...  o|
|           oo   E|
|          o.oo.  |
|         . .=*o  |
+-----------------+

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