One effective way of securing SSH access to your cloud server is to usea public-private key pair. This means that a public key is placed onthe server and a private key is placed on your local workstation.Using a key pair makes it impossible for someone to log in by using justa password, as long as you set up SSH to deny password-basedauthentication.
Generate RSA keys with SSH by using PuTTYgen
I am trying to generate a secure private and public key with openssl for use with my cloud hosting provider but when I did that the public key output from openssl was not recognized. $ openssl genrsa -out private.pem -passout file:password.txt 2048 After Generating RSA private key, 2048 bit long modulus, then.
This article provides steps for generating RSA keys by using PuTTYgen onWindows for secure SSH authentication with OpenSSH.
Generate keys
In Windows, use PuTTYgen to generate your public and private keys.
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Use the key pair
You can use the RSA key pair in the following ways.
Specify your SSH key when creating a new cloud server
When you create a cloud server, you can assign a public key from the list of keys.If your key is not already in the list, you may add it, and then assign it.
Add a new public key to the list
Openssl Create Ssh Public Key
Assign a public key
Assign your SSH Key to an existing cloud server
To make use of your newly generated RSA key pair, you must tell PuTTY touse it when connecting to your cloud server.
After you save your session, your key is loaded automatically when youconnect to your server.
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