A real-world enterprise network simulation using Cisco Packet Tracer. The project includes OSPF dynamic routing, DHCP, DNS, NAT, VLANs, ACLs, and IoT devices with CIDR-based subnetting. Developed by IJ Baig.
This project simulates a real-world medium-to-large scale enterprise network in Cisco Packet Tracer. It uses Class C private IP addressing (192.168.x.x) with CIDR-based subnetting, and includes:
- 🔁 Dynamic Routing (OSPF)
- 🖥️ Multiple PCs, Routers, Switches, Servers, and IoT Devices
- 🌍 DNS, DHCP, Web Services, VLANs, NAT, and ACLs
- 🔒 Security Measures using ACLs and NAT
- 📡 Realistic Subnetting using /26, /28, /30, and /29 for public access
- CIDR-based subnetting with /30 for router links, /26 and /28 for LANs
- Public-facing subnet:
192.168.2.0/29
- OSPF (Area 0) is used for dynamic routing
- Static routes are added for NAT paths
| Service | Location | Function |
|---|---|---|
| DHCP | R6 | Assigns IPs to clients |
| DNS | R6 | Resolves internal domains |
| Web Servers | R5, Public | Hosts websites |
| NAT | R7 | Maps internal IPs to public |
| ACLs | R7 | Filters incoming external traffic |
| IoT | R6 | Webcam, Thermostat connected |
- Open the
.pktfile using Cisco Packet Tracer 8.0 or above. - Review the configurations on routers (OSPF, interfaces).
- Test connectivity using:
pingtracert- Web browser simulation
- Verify DHCP leases and DNS resolutions.
- Test public access to internal web server via NAT using
192.168.2.4.
- 🔐 ACLs allow only HTTP traffic to internal server
- 🔒 NAT hides internal IPs
⚠️ Future improvements:- Add VPN for remote access
- Use Layer 3 Switches
- Add secondary DHCP/DNS for redundancy
- Gained practical experience in enterprise-level network design
- Learned to configure OSPF, NAT, ACLs, DHCP, and DNS
- Understood subnetting using CIDR
- Improved troubleshooting and simulation skills
For queries or suggestions:
📧 ijbaig53@gmail.com