Security Enterprise Network Design

🚀 Purpose

The primary objective of this project is to:

• Design a secure enterprise network architecture.
• Demonstrate communication between systems using routing and switching protocols.
• Implement and test security measures, including firewalls, VLANs, ACLs, and VPNs.
• Provide a scalable and redundant network for enterprise applications.

---

🖥️ Devices Used

• Routers: Cisco ISR Series (e.g., ISR 2911) for routing and inter-network communication.
• Switches: Cisco Catalyst Series (e.g., Catalyst 2960) for VLAN and inter-VLAN routing.
• Firewalls: Simulated firewall devices for network perimeter security.
• Servers:
  • Authentication Server (e.g., AAA Server).
  • DNS Server.
  • Application Servers (Web and Database).
• End Devices: PCs, laptops, and wireless devices connected through VLANs.

---

📡 System Communication

Communication Protocols:

• Routing Protocols: OSPF/EIGRP for efficient network routing.
• Switching: VLANs (802.1Q) for logical traffic segmentation.
• Security Measures:
  • ACLs for traffic filtering.
  • Firewalls for access control.
  • VPNs for secure remote communication.

---

🔧 Configuration

Key Configurations:

1. Routers:
   • OSPF/EIGRP configuration for dynamic routing.
   • NAT for external access.
   • VPN tunnels for secure remote access.
2. Switches:
   • VLAN configurations for segmentation.
   • Trunking for inter-VLAN communication.
3. Firewalls:
   • Rule-based access control for inbound/outbound traffic.
   • Stateful packet inspection.
4. Servers:
   • DNS configuration for name resolution.
   • Authentication services (e.g., RADIUS).

---

🛠️ Setup Instructions

1. Install Cisco Packet Tracer:
   • Download from Cisco NetAcad.
2. Open Project File:
   • Clone this repository and load the .pkt file in Cisco Packet Tracer.
3. Inspect and Configure:
   • Open the devices in Packet Tracer to review the topology.
   • Apply any necessary configurations (VLANs, routing, firewalls, etc.).
4. Simulate:
   • Use simulation mode to test connectivity and verify security policies.
5. Document Results:
   • Record test results and analyze the network's performance.

---

🌀 Workflow

1. Planning:
   • Define the network's objectives, such as scalability, redundancy, and security.
   • Design the topology and device roles.
2. Implementation:
   • Configure VLANs, routing, firewalls, and servers.
   • Set up remote access through VPNs.
3. Testing:
   • Simulate traffic and validate network configurations.
   • Verify ACLs, routing protocols, and connectivity.
4. Optimization:
   • Troubleshoot any issues and fine-tune configurations.
5. Documentation:
   • Maintain detailed records of configurations, addressing schemes, and test results.

---

📂 Project Structure

---

📚 Additional Resources

• Cisco Packet Tracer Official Documentation
• Routing Protocols Overview (OSPF/EIGRP)

---

📬 Feedback

Feel free to contribute or provide feedback! Open an issue or submit a pull request to improve this project.