SSH Remote Access

This article explains how to configure and use SSH to remotely connect to your EL server.

What You Will Learn

• Verify the SSH service status
• Log in using password and key-based authentication
• Basic SSH security configuration

Verify SSH Service Status

EL 9 installs and enables the OpenSSH service by default:

Check sshd status

$ sudo systemctl status sshd

Confirm SSH port is open

$ sudo ss -tlnp | grep :22

Connect from a Client

Basic connection

$ ssh username@server-ip

Specify a port

$ ssh -p 2222 username@server-ip

Configure Key-Based Authentication

Key-based authentication is more secure than passwords and is recommended:

Generate a key pair on the client

$ ssh-keygen -t ed25519 -C "your-comment"

Copy the public key to the server

$ ssh-copy-id username@server-ip

After verifying key-based login works, consider disabling password authentication. See SSH Security Hardening for details.

Next Steps

• DNF Package Management — Start managing software packages
• SSH Security Hardening — Further harden SSH