SSH Configuration

Secure SSH server and client configuration for production environments, including key management, hardened sshd settings, bastion host architecture, tunneling, and multiplexing.

When to Use

• Setting up secure remote access to Linux or Unix servers
• Hardening SSH daemon configuration to meet compliance requirements
• Configuring bastion / jump hosts for private network access
• Creating SSH tunnels for secure port forwarding
• Managing SSH keys for teams or automated deployments
• Troubleshooting connection, authentication, or performance issues

Prerequisites

• OpenSSH client installed locally (ssh -V to verify)
• OpenSSH server installed on target (sshd)
• Root or sudo access on the server for sshd_config changes
• Firewall rules allowing TCP port 22 (or custom SSH port)