Security
bash
Beginner
SSH Hardening Config
Minimal sshd_config changes to harden SSH: disable root login, password auth, and old ciphers.
bash
# Add to /etc/ssh/sshd_config
Port 2222
PermitRootLogin no
PasswordAuthentication no
PubkeyAuthentication yes
X11Forwarding no
MaxAuthTries 3
ClientAliveInterval 300
# Reload: systemctl reload sshdPrerequisites
- OpenSSH server
Pro Tips
- → Test config with sshd -t before reloading.
- → Keep a backup session open while changing port.
Commercial Licensing
Acquire a production access token or template license for enterprise deployment.
Module Info
- Language
- bash
- Level
- Beginner
- Read time
- 3 min
- Published
- Feb 2025
- License
- Commercial License
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