Linux Security Audit Checklist

Security Guide: Linux Security Audit Checklist

Protect your server with these security best practices.

Security Assessment

# Check open ports
sudo netstat -tulpn

# Review active connections
sudo ss -tunap

# Check failed login attempts
sudo grep "Failed password" /var/log/auth.log

Implementation Steps

# Step 1: Update system
sudo apt update && sudo apt upgrade -y

# Step 2: Configure firewall
sudo ufw enable
sudo ufw allow 22/tcp
sudo ufw allow 80/tcp
sudo ufw allow 443/tcp

# Step 3: Install security tools
sudo apt install fail2ban aide -y

Monitoring & Maintenance

# Check security logs
sudo tail -f /var/log/auth.log

# Review firewall rules
sudo ufw status verbose

# Scan for rootkits
sudo rkhunter --check

WebHostWare VPS includes DDoS protection and firewall.