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A Cisco Packet Tracer project simulating a secure, scalable network for a small real estate company. Features VLAN segmentation, firewall, VPN, DHCP, DNS, wireless access, AAA with RADIUS, and inter-VLAN routing with OSPF. Ideal for CCNA-level training or SMB infrastructure design.

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MohamedAlaaHamada/Securing-a-Business-Network-on-Cisco-packet-tracer

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🏢 Real Estate Company Secure Network Infrastructure (Cisco Packet Tracer)

📌 Objective

Design and implement a secure, scalable, and reliable network for a small real estate business with over 30 employees. The network supports seamless internal communication, guest access, remote work, and robust cybersecurity through segmentation, encryption, and proactive threat management.

🛠️ Technologies & Features Implemented

🔐 Security

  • VLAN Segmentation by department and function (Internal, Guest, Server)
  • Cisco ASA Firewall for advanced perimeter defense
  • Access Control Lists (ACLs) to control inter-VLAN and outbound traffic
  • AAA Authentication using RADIUS with centralized login control
  • 802.1X Wireless Authentication with RADIUS for secure Wi-Fi
  • SSHv2 Remote Management with session timeout & login tracking
  • Intrusion Detection & Prevention System (IDPS)
  • Account Lockout, Password Policy & Logging enforcement
  • Site-to-Site VPN (IPsec) for secure remote office connectivity

📶 Connectivity & Routing

  • Inter-VLAN Routing with Layer 3 Switch
  • Dynamic Routing using OSPF
  • Static & Default Routes for internal and internet-bound traffic
  • Wireless LAN Controller (WLC) with LWAPs (CAPWAP protocol)
  • Port Address Translation (PAT) for internet access

🔧 Switching & Optimization

  • Rapid-PVST+, PortFast, BPDU Guard for Layer 2 loop prevention
  • LACP / PAgP EtherChannel for redundancy and performance
  • Port Security, unused port shutdown, and black-hole VLANs
  • CDP/LLDP Disabled on unused ports for security
  • Manual Speed/Duplex Configuration on unused interfaces

📡 Infrastructure Services

  • DHCP, DNS, NTP, SYSLOG, TFTP
  • Web Server, Email Server
  • Logging with Timestamps, Service Password Encryption

☎️ Voice over IP (VoIP)

  • Dedicated Voice VLANs for IP Phones
  • QoS Considerations for optimal call quality

🧩 Project Scope

This project simulates a fully operational small business network architecture using Cisco Packet Tracer. It demonstrates advanced networking principles including:

  • Network segmentation
  • Security hardening
  • Remote access setup
  • Centralized management

🎯 This project is ideal for:

  • Networking students
  • CCNA/CCNP learners
  • Small business infrastructure designers
  • Security-focused network engineers

About

A Cisco Packet Tracer project simulating a secure, scalable network for a small real estate company. Features VLAN segmentation, firewall, VPN, DHCP, DNS, wireless access, AAA with RADIUS, and inter-VLAN routing with OSPF. Ideal for CCNA-level training or SMB infrastructure design.

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