Smart Office Network Project

Overview

This project designs and implements a smart office network that integrates IoT devices, advanced networking, and centralized server systems to enhance efficiency, security, and connectivity. The network supports two office environments, two home networks, and a VoIP system, all connected through a central router (Router4). The system ensures secure communication, dynamic IP allocation, and IoT automation for a modern, flexible work environment.

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Key Features

• Centralized Server System: Hosts DHCP, DNS, HTTP, FTP, and SMTP servers for seamless resource management.
• Dynamic Routing: Uses RIP Version 2 for efficient routing between subnets.
• IoT Integration: Includes motion sensors, RFID doors, smart coffee machines, and AC systems for automation.
• Access Control: ACLs restrict direct communication between devices, ensuring all traffic passes through the server network for enhanced security.
• Remote Work Support: Home networks enable secure remote access and IoT device control.

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Network Design

Components

1. Office Networks:

   • Two offices with PCs, printers, and switches connected to Router4.
   • IP ranges: 192.168.1.0/24 (Office 1) and 192.168.3.0/24 (Office 2).

2. Home Networks:

   • Two home networks with wireless routers and IoT devices.
   • IP ranges: 192.168.0.0/24 (Home 1) and 192.168.5.0/24 (Home 2).

3. VoIP Network:

   • IP phones connected via a switch and router.
   • IP range: 192.168.10.0/24.

4. Server Network:

   • Centralized server room with DHCP, DNS, HTTP, FTP, and SMTP servers.
   • IP range: 192.168.2.0/24.

5. Central Router (Router4):

   • Connects all networks and enforces routing and security policies.

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Technologies Used

• Cisco Packet Tracer: For network simulation and configuration.
• RIP Version 2: For dynamic routing between subnets.
• IoT Devices: Motion sensors, RFID doors, smart coffee machines, and AC systems.
• Server Software: DHCP, DNS, HTTP, FTP, and SMTP servers for centralized management.
• Access Control Lists (ACLs): To restrict direct communication between devices.

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Server Configuration

• DHCP Server: Dynamically assigns IP addresses to devices in all networks.
• DNS Server: Resolves hostnames (e.g., web.smartoffice.local → 192.168.2.10).
• Web Server: Hosts a test page for internal web services.
• FTP Server: Enables secure file transfers across the network.
• Email Server: Handles internal email communication via SMTP.

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IoT Integration

• Devices: Motion sensors, RFID doors, smart coffee machines, and AC systems.
• LAN Setup: IoT devices operate on a dedicated LAN (192.168.25.1) with wireless connectivity.
• Control: All devices can be monitored and controlled via a smartphone IoT monitor.

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Security Features

• Access Control Lists (ACLs): Block direct communication between devices, ensuring all traffic passes through the server network.
• Centralized Routing: All traffic flows through Router4, enhancing control and security.
• IoT Security: Devices operate on a dedicated LAN with restricted access.

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Future Improvements

1. Scalability: Replace RIP with OSPF or EIGRP for better performance in larger networks.
2. Redundancy: Implement HSRP to eliminate single points of failure.
3. Enhanced Security: Add firewalls and IPsec encryption for advanced protection.
4. Network Monitoring: Deploy tools like SNMP for real-time network management.

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Conclusion

This smart office network project successfully demonstrates centralized control, dynamic routing, and IoT integration for a modern, secure, and efficient work environment. By addressing scalability and security limitations, the network can be further improved for long-term performance.

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References

• Cisco Packet Tracer: Used for network simulation.
• RIP Version 2: For dynamic routing.
• IoT Devices: For automation and control.
• Server Software: For centralized resource management.