SSH
SSH (Secure Shell) is a secure remote access and tunnelling protocol widely used for Linux administration, automation, and secure transport.
Features
- Encrypted remote access
- Public key authentication
- Secure file transfer
- Port forwarding
- Tunnelling support
Common SSH Services
| Service | Purpose |
|---|---|
| SSH | Remote shell |
| SCP | Secure copy |
| SFTP | Secure file transfer |
| SSH Tunnel | Encrypted forwarding |
SSH Architecture
graph LR
A[SSH Client] --> B[Encrypted Session]
B --> C[SSH Server]Topics Covered
- SSH key authentication
- SSH hardening
- SCP and SFTP
- Port forwarding
- SSH tunnelling
- Linux administration
- Troubleshooting
Generate SSH Keys
Connect to a Server
Example SSH Tunnel
Warning
Password authentication should be disabled in production environments whenever possible.