How to Set Up Passwordless SSH Login?

Setup Passwordless SSH Login

Step 1: First of all open your terminal. Now type the following and hit Enter:

ssh-keygen -t rsa -b 4096 -C “username@ip_address”

i-e: ssh-keygen -t rsa -b 4096 -C “faizan@192.168.0.1”

The following output will be shown in case of success:

Generating public/private RSA key pair.

Step 2: Then it will ask you the file in which you want to save that key. By default, it is like the following:

Enter file in which to save the key (/home/pc_name/.ssh/id_rsa):

You can hit enter on this.

Step 3: Then you have to enter a password to secure your keys’ files. You can type the desired password and hit Enter or just hit Enter to skip the authentication process.

Then you will see:

The key fingerprint is:

ABC123:1ABCabcAbcAbCaCabcAbcAbCCab+cAbabcAbBc username@ip_address

The key’s randomart image is:

• — -[RSA 4096] — — +

| .. ++oo+oo+|

| . ..o+o=+.+.|

| . . s . .. |

| . …|

| o.0.|

| .+, +|

| .o+*|

• — — [SHA256] — — -+

Step 4: Then you can check whether the key files are made or not by typing the following command on the terminal:

ls -l ~/.ssh/

You will see id_rsa, and id_rsa.pub files there in case of success.

Step 5: Now type the following command to upload the keys onto the server, and hit Enter.

ssh-copy-id username@ip_address

i-e: ssh-copy-id faizan@192.168.0.1

Step 6: You have to enter your SSH Server’s password. Please type the password(it will not be visible so type it once & correctly) and hit the Enter key.

Step 7: Now just type:

ssh username@ip_address

Hurrah!!! You did it. Now you will not be asked to enter your password to connect.