Web Security September 20, 2025 1 min read

Securing Your Linux Server: Essential Checklist

A comprehensive security checklist for hardening your Linux server.

S
Emma Wilson
Cybersecurity analyst and penetration tester
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Linux Server Security Hardening

Follow this checklist to secure your production server.

Essential Steps

  1. Update system packages regularly
  2. Configure firewall (UFW/iptables)
  3. Disable root SSH login
  4. Use SSH key authentication
  5. Set up fail2ban

SSH Hardening

# /etc/ssh/sshd_config
PermitRootLogin no
PasswordAuthentication no
PubkeyAuthentication yes
MaxAuthTries 3

Tags

#linux #security #ssh #hardening

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