Linux Server Security Hardening
Follow this checklist to secure your production server.
Essential Steps
- Update system packages regularly
- Configure firewall (UFW/iptables)
- Disable root SSH login
- Use SSH key authentication
- Set up fail2ban
SSH Hardening
# /etc/ssh/sshd_config
PermitRootLogin no
PasswordAuthentication no
PubkeyAuthentication yes
MaxAuthTries 3
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