To access your instances using SSH, generate an SSH key pair, associate the public key with your instances, and use the private key to log in to the instances using SSH.
Note:
You can’t use SSH keys to log in to a Windows instance. To log in to your Windows instance using RDP, see Accessing a Windows Instance Using RDP.
Mar 03, 2020 Windows. Ensure that PuTTY is installed on your local system. From the Windows Start menu, start PuTTYGen. In the window that opens, select the key type from the Parameters field. Click Generate. PuTTYGen displays the generated public key string. Specify a passphrase to protect the key pair. Generate RSA keys with SSH by using PuTTYgen. Last updated on: 2016-06-23; Authored by: Rackspace Support; One effective way of securing SSH access to your cloud server is to use a public-private key pair. A guide detailing everything you need to know about the OpenLiteSpeed WordPress image, including how to get started, its components, benchmarks, FAQs, and more.
Aug 18, 2017 For the How-to Tutorial of how to add a SSH Key for Google Cloud Console: https://docs.bitnami.com/google/faq/.
Caution:
Keep your SSH keys secure. Lay down policies to ensure that the keys aren’t lost or compromised when employees leave the organization or move to other departments. If you lose your private key, then you can’t access your instances. For business continuity, ensure that the SSH keys of at least two IT system administrators are added to your instances.
Topics
Generating an SSH Key Pair on UNIX and UNIX-Like Systems
Use the following procedure to generate an SSH key pair on UNIX and UNIX-like systems:
Run the ssh-keygen
command.
You can use the -t
option to specify the type of key to create.
For example, to create an RSA key, run:
You can use the -t
option to specify the length (bit size) of the key, as shown in the following example:
The command prompts you to enter the path to the file in which you want to save the key.
A default path and file name are suggested in parentheses. For example: /home/
user_name
/.ssh/id_rsa
. To accept the default path and file name, press Enter. Otherwise, enter the required path and file name, and then press Enter.
The command prompts you to enter a passphrase.
The passphrase is not mandatory if you want to log in to an instance created using an Oracle-provided image. However, it is recommended that you specify a passphrase to protect your private key against unauthorized use.
The command generates an SSH key pair consisting of a public key and a private key, and saves them in the specified path. The file name of the public key is created automatically by appending .pub
to the name of the private key file. For example, if the file name of the SSH private key is id_rsa
, the file name of the public key would be id_rsa.pub
.
Make a note of the path and file names of the private and public keys. When you create an instance, you must specify the SSH public key value. When you log in to an instance, you must provide the path to the corresponding SSH private key and you must enter the passphrase when prompted.
Generating an SSH Key Pair on Windows
You can generate an SSH key pair on a Microsoft Windows machine by using an application such as PuTTY. See the tutorial, Creating SSH Keys for Use with Oracle Cloud Services.