🛡️ Public Server Setup Script

This script provides a comprehensive and automated setup process for initializing Ubuntu-based public servers (e.g., VDS/VPS). It focuses on system updates, essential utilities, Docker installation, security hardening, and performance tuning.

🚀 Features

• Updates the system packages.
• Configures timezone and locale.
• Installs Docker and Docker Compose.
• Applies kernel and network optimizations (sysctl, ulimit).
• Disables IPv6 (optional).
• Installs and configures Fail2Ban for SSH brute-force protection.
• Installs the latest generic Linux kernel.
• Reboots the system automatically after setup.

🧰 Installed Packages

• vim, nano, wget, curl, jq, net-tools, bzip2, locales, ufw, fail2ban, etc.
• docker.io
• Latest Docker Compose release (fetched from GitHub)

⚙️ Usage

Make the script executable and run it:

chmod +x setup.sh
./setup.sh

Note: The system will reboot automatically at the end of the process.

📌 Configuration Details

• Timezone: Europe/Istanbul

• Locale: en_US.UTF-8

• File Descriptor Limits:

  * soft nofile 65535
  * hard nofile 65535
  

• Sysctl Settings:

  • Increases buffer sizes, backlog limits, and enables BBR congestion control.
  • Disables IPv6 (can be removed or edited if required).

• Fail2Ban:

  • Monitors SSH login attempts.
  • Blocks IPs permanently after 2 failed attempts within 10 minutes.

🔐 Security Tips

• Adjust fail2ban ban time and retry limits according to your environment.
• Consider adding UFW firewall rules for further hardening.
• If IPv6 is required, comment or remove the related lines in the script.

🧾 Requirements

• Ubuntu 22.04 or later
• Sudo privileges

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License

This project is licensed under the MIT License. See the license file for details.

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Issues, Feature Requests or Support

Please use the Issue > New Issue button to submit issues, feature requests or support issues directly to me. You can also send an e-mail to [email protected].