As you will have troubles running it on Windows, you can run it on the server itself. If someone has your private key file, then security is lost to any computer that has the matching pubic key, but they need access to your computer to get it. To avoid common pitfalls when setting up a public key authentication, use ssh-copy-id command/script. The key fingerprint is: After that use, the ssh-copy-id command, should work.
Your public key has been saved in /root/.ssh/idrsa.pub. If someone has knows your password, your security goes out of the window. Enter file in which to save the key (/root/.ssh/idrsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /root/.ssh/idrsa. It’s actually pretty similar in theory to using your password. RSA is pretty secure and uses a 2048 bit-length by default. This private key ONLY matches with that ONE public key, and the connection needs to be started from the computer that has the private key. The private key that’s generated is stored on the computer you’re using, and it is never transferred, not even to be verified. All examples have been tested in Bash and should work in other POSIX compatible shells as well. The examples we’ll show here assume that we’ve used ssh-keygen with default settings to create our SSH key pair. In this tutorial, we’ll observe a few ways to do this.
RELATED: What Is a PEM File and How Do You Use It? Security Considerations To use our SSH key pair, we have to copy the public key to the remote machine. This means that if you wanted to add another public key for your account on this server, you would copy the contents of the second id_rsa.pub file into a new line on the existing authorized_keys2 file. I have the following script which I usually use to push changes to the different servers. ssh/idrsa.pub from our central server to multiple servers. Subsequent public keys can be appended to this file, much like the ~/.ssh/known_hosts file. Copy ssh public key to multiple Linux hosts Ask Question Asked 8 years, 11 months ago Modified 11 months ago Viewed 63k times 18 I am trying to copy.
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