This package provides a set of tools to generate and manage SSL certificates and private keys, and includes genkey, the Red Hat Keypair Generation utility that will guide you through the key generation process. Generate or import the private key and certificate for a Linux web server's SSL/TLS offload with AWS CloudHSM. Nov 10, 2011 4. Your public and private SSH key should now be generated. Open the file manager and navigate to the.ssh directory. You should see two files: idrsa and idrsa.pub. Upload the idrsa.pub file to the home folder of your remote host (assuming your remote host is running Linux as well).
I
am a new RHEL 8 server sysadmin. How do I configure SSH public key-based authentication for RHEL (Red Hat Enterprise Linux) 8 server?
Introduction – SSH is an acronym for secure shell. It is a suite of cryptographic network protocol. It allows users to log in and transfer files securely over the unsecure network such as the Internet. OpenSSH is an implementation of SSH protocol on RHEL 8. You can log in using RHEL 8 user and password account. However, OpenSSH project recommends log in using a combination of a private and public SSH keys.
Advertisements
Sample set up for our RHEL 8 serverWhere,
How do I set up SSH keys on RHEL 8 server?![]()
The procedure to set up SSH key on Red Hat Enteprise Linux 8 server:
Let us see all commands and steps in details.
How to create the ed25519 or RSA key pair
The syntax is:
ssh-keygen -t ed25519 Where,
Redhat Generate Ssl Private Key Vs Public Key
I am going type the following command on my Ubuntu desktop to create the key pair:
$ ssh-keygen -t ed25519 I strongly recommend that you set up a passphrase when prompted. ![]() How to copy the public keyRedhat Generate Ssl Private Key Extension
Now our key paid generated and stored in ~/.ssh/ directory. You must copy a public SSH key file named ~/.ssh/id_ed25519.pub (or ~/.ssh/id_rsa.pub if you created RSA key) to the RHEL 8 server. Try the ssh-copy-id command as follows:
$ ssh-copy-id -i ~/.ssh/fileNameHere.pubuser@remote-RHEL8-server-ip For example: $ ssh-copy-id -i ~/.ssh/id_ed25519.pub [email protected] How to log in using ssh and without a password
Now try logging into the machine, with the ssh command as follows:
$ ssh user@rhel-8-server You should be able to log in without a password. If you set up a passphrase, unlock it as follows for your current session so that you don’t have to enter it every time you run ssh, sftp, scp, rsync and other commands: $ ssh-agent $SHELL
Optional settings for root user
Disable root user log in all together on RHEL 8 via ssh. Log in as root user on RHEL 8 and run following to add a user named vivek to wheel group:
# usermod -aG wheel vivek Allows users in group wheel can use sudo command to run all commands on RHEL 8 server. Next disable root user login by adding the following line to sshd_config: # vi /etc/ssh/sshd_config Disable the password for root login and only allow ssh keys based login:
Save and close the file. Reload the ssh server:
# systemctl reload sshd.service For more info see “Top 20 OpenSSH Server Best Security Practices“. Conclusion
You learned how to set up and use SSH keys to manage your RHEL 8 based server. For more info see OpenSSH man pages here.
ADVERTISEMENTS
Comments are closed.
|
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
December 2020
Categories |