XBdNUCYUjX+moY3A4fhA2GhJx7zXG4sXuUQXn1V/Eb3S9xuVFedXpJZEFomoWMfOHzmr4/lH TEU6Ks6M8aqD/m+tGhSvbf1mQN6OIK5kY9XJmPUjT0ZC4uiFCjp+tHBOMblG4D0K6IENluh4 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA2z3lT+M0yxauEwmJvVJUz1ZFrRJzL4jgd/zr
It will break the key in multiple line like below. Cisco CLI can contain maximum 254 characters in one line so it is not possible to pest the entire key in one line so you need to break the key in multiple line. Copy the content of the key from that file.
ssh folder there is a file call id_rsa.pub which is actually the public key. | E key is saved in /home/imtiaz/.ssh folder.ssh is a hidden folder. Your identification has been saved in /home/imtiaz/.ssh/id_rsa. If you don’t want any then you can simply leave this blank.
CISCO KEYGEN PASSWORD
The password will used for the safety of the key.
Generate key in Linux box :~$ ssh-keygen -t rsaĮnter file in which to save the key ( /home/imtiaz/.ssh/id_rsa):Įnter passphrase (empty for no passphrase):Įnter password and confirm it. Login to the Linux server and generate the key. At this stage you can now login to this router with any ssh client using that user and password. User creation trainigrouter(config) #username admin privilege 15 secret mysecretĪs you can see that the user admin is created with privilege level 15 means all permissions enable. Let’s create a local user cause we mention “ login local” here so the router will search a user in its local database. Any other method like Telnet will be denied. That will allow only ssh access to the router. Trainigrouter(config-line) #transport input ssh If you want only ssh connection, then mention “ ssh” in “ transport input” command like below: trainigrouter(config) #line vty 0 4 *Nov 16 07:11:59.495: %SSH-5-ENABLED: SSH 1.99 has been enabledĪfter pressing enter you will see a message like above which shows that the ssh is enabled on the router. press enter: % Generating 2048 bit RSA keys, keys will be non-exportable. It’s a combination of your host and domain name “ ”. Note the name of the key in the second line. A longer modulus might be more secure, but it takes longer to generate and use.
Then it will ask you for the modulus length. You will see a message similar like the above one after “ crypto key generate rsa” command. The name for the keys will be: Ĭhoose the size of the key modulus in the range of360 to 4096 for Let’s generate the key: trainigrouter(config) #crypto key generate rsa In this tutorial we will use a key which we will generate in a Linux box shortly rather than this one (router key), so why to generate this key in the router? it’s because to enable the ssh in Cisco router a local rsa key is mandatory, without the key you cannot enable ssh. End with CNTL/Z.Īfter changing the hostname lets add the domain name: trainigrouter(config)#ip domain-name training.local Generate the rsa key Change the hostname of the routerįollow the below procedure to change the hostname of the router: Router #configure terminalĮnter configuration commands, one per line. We will enable ssh on the router and then generate a key on an Ubuntu Linux server and using that key we will login to our router.
CISCO KEYGEN HOW TO
Today I will show you how to login Cisco router using ssh key.
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