Cisco Nexus Generate Ssh Key
Lets say you have a private/public key pair that you use to login to your server via SSH and you lose the public key, either it was deleted or corrupt and you don’t want to have to regenerate a new pair what options do you have? In this post I will demonstrate how to regenerate a public key from the corresponding private key that you still have.
May 20, 2014 Author, teacher, and talk show host Robert McMillen shows you how to use the Cisco ASA version 9 generate RSA keys command. Quickly Enable SSH on a Cisco Router or Switch. Sep 06, 2014 Secure Shell (SSH) on the other hand uses port 22 and is secure. SSH uses public key cryptography to authenticate remote user. You can configure SSH access in Cisco ASA device using the steps shown here.
Generate public key and store into a file
It is a simple one liner command to generate a public key from a private key, so lets say our private key is named ‘user@myserver.key’ and we want to generate the public key and name it ‘authorized_keys’. Below is the command to do this.
user@workstation:~$ssh-keygen-y-fuser@myserver.key>authorized_keys |
Command Breakdown:
/diablo-2-26-cd-key-generator.html. ‘ssh-keygen -y’ : tells the prorgram ssh-keygen to output a public key
‘-f user@myserver.key’: references the key file user@myserver.key to generate the public key from
Acronis true image 2017 new generation serial key. ‘> authorized_keys’: instead of printing the output to the console redirect the output (public key) to a file named ‘authorized_keys’
Generate Ssh Key Putty
Copy public key to your server
Now we will need to take our authorized_keys file and store it on the server, if we can currently login via SSH to our server we can use rsync over ssh to securely copy the public key to the server, Although this key is displayed to anyone who attempts to login to your server it is smart to use SSH or another secure method to copy it up to the server to ensure that the key is not tampered with while it is being transmitted.
Below is an example using rsync to copy the authorized keys file to its destination on the server and removing it from your local computer.