Project Description This project involves building and configuring a firewall on a Linux operating system using UFW (Uncomplicated Firewall). The firewall will be designed to monitor and control incoming and outgoing network traffic based on predetermined security rules. The project also includes advanced configurations such as logging, setting default policies, and using application profiles.

Technologies Used

• Operating System: Linux
• Firewall Software: UFW (Uncomplicated Firewall)
• Tools: Terminal, SSH

Installation Instructions

Prerequisites

1. Operating System**: Ensure you are running a Linux distribution (e.g., Ubuntu 20.04)

2. Software Dependencies**: Install UFW

   sudo apt-get update sudo apt-get install -y ufw

Setup

1. Enable UFW

   sudo ufw enable

2. Allow Necessary Services and Ports

   sudo ufw allow ssh sudo ufw allow 80/tcp # HTTP sudo ufw allow 443/tcp # HTTPS

3. Deny Unnecessary Services and Ports

   sudo ufw deny 23/tcp # Telnet sudo ufw deny 21/tcp # FTP

4. Advanced Configuration

   • Logging

     sudo ufw logging on

   • Default Policies

     sudo ufw default deny incoming sudo ufw default allow outgoing

   • Application Profiles Create or edit application profiles in /etc/ufw/applications.d/.

5. Test Firewall for Open Ports Use tools like nmap to scan and verify the firewall configuration.

   sudo apt-get install -y nmap nmap -v your_server_ip

Usage Basic Commands

• Enable UFW

  sudo ufw enable

• Disable UFW

  sudo ufw disable

• Check Status

  sudo ufw status

• Allow a Service or Port

  sudo ufw allow <service/port>

• Deny a Service or Port

  sudo ufw deny <service/port>

Contributing If you would like to contribute to this project, please fork the repository and submit a pull request with your changes.

License This project is licensed under the MIT License.