Enhancing NVMe SSD Server Security: Firewall, DDoS, and WAF Installations

In today's world, high-performance NVMe SSD servers have become a cornerstone for web hosting services. However, the security of these servers is critically important against cyber threats. In this article, we will discuss the installations of firewall, DDoS protection, and WAF (Web Application Firewall) to protect your NVMe SSDs.

1. Diagnosing the Issue

You can use some basic commands to diagnose security vulnerabilities on your server. Use the following commands to check the system status:

• top - Shows active processes and resource usage on the server.
• htop - Analyzes resource usage with a more user-friendly interface.
• dmesg - Displays kernel messages and helps identify hardware issues.

2. Firewall Installation

For firewall installation on Linux servers, you can use iptables or ufw. You can set up a basic firewall configuration with the following commands:

sudo apt install ufw  # Install UFW
sudo ufw allow ssh      # Allow SSH access
sudo ufw allow 80      # Allow HTTP traffic
sudo ufw allow 443     # Allow HTTPS traffic
sudo ufw enable         # Enable the firewall

Check the status afterward:

sudo ufw status

3. DDoS Protection

For protection against DDoS attacks, we recommend installing fail2ban. Follow the steps below:

sudo apt install fail2ban  # Install Fail2ban
sudo systemctl start fail2ban  # Start the service
sudo systemctl enable fail2ban  # Enable on startup

For the configuration file:

sudo nano /etc/fail2ban/jail.local

Add the following configuration:

[sshd]
enabled = true
port = ssh
filter = sshd
logpath = /var/log/auth.log
maxretry = 5
bantime = 600

4. WAF Installation

Installing a WAF for web applications provides security at the application layer. Follow the installation of ModSecurity:

sudo apt install libapache2-mod-security2  # Install ModSecurity
sudo a2enmod security2  # Enable ModSecurity module
sudo systemctl restart apache2  # Restart Apache service

For the configuration file:

sudo nano /etc/modsecurity/modsecurity.conf

Find and modify the following line:

SecRuleEngine On

5. Restarting Services

Use the following commands to restart the necessary services to apply your configurations:

sudo systemctl restart apache2
sudo systemctl restart fail2ban
sudo ufw reload

Conclusion

By following these steps, you can enhance the security of your NVMe SSD servers and protect against cyber threats. Remember, security is an ongoing process, and it's essential to regularly review your systems.