Final Network Configuration Lab Enterprise network lab with VLANs, NAT, ACLs, and routing using Cisco Packet Tracer.

📌 Overview This project demonstrates the design and implementation of a secure enterprise network using Cisco Packet Tracer.

The lab focuses on network segmentation, routing, and security controls commonly used in enterprise environments. It includes VLAN segmentation, inter-VLAN routing, NAT (Static & PAT), ACL-based security policies, and controlled access to internal servers.

🧠 Technologies & Concepts IP Subnetting (/28, /27) VLANs (10, 20, 30) Router-on-a-Stick (Inter-VLAN Routing) Static Routing NAT (Static NAT & PAT) Access Control Lists (ACLs) Web & FTP Servers Cisco IOS troubleshooting commands 🗺 Network Topology The network simulates a small enterprise infrastructure with segmented departments and controlled external access.

Components include:

Core and edge routers Layer 2 switches with VLAN segmentation Public-facing servers Simulated internet connectivity Topology diagram:

Network Topology

🏗 Network Components 4 Routers – Core routing and edge connectivity Layer 2 Switches – VLAN segmentation Multiple VLANs – Department isolation Router-on-a-Stick – Inter-VLAN communication Public Servers – Web and FTP access using Static NAT Internet Simulation – NAT and routing for external communication ⚙ Example Configurations Router-on-a-Stick (Inter-VLAN Routing) interface g0/0.10 encapsulation dot1Q 10 ip address 192.168.10.1 255.255.255.0 NAT (PAT) ip nat inside source list 1 interface g0/1 overload ACL Example access-list 100 permit tcp any host 192.168.30.10 eq 80 access-list 100 deny ip any any 🧪 Verification All configurations were tested using Cisco IOS verification commands:

ping traceroute show ip route show ip nat translations show access-lists show vlan brief show interfaces trunk Screenshots of these tests are available in the Screenshots/ directory.

🎯 Skills Demonstrated Network segmentation using VLANs Inter-VLAN routing configuration NAT for internal network internet access Security enforcement using ACLs Static and dynamic routing verification Troubleshooting Cisco IOS networking environments 📂 Repository Contents Final-Network-Lab.pkt Network-Documentation.md Screenshots/ README.md Final-Network-Lab.pkt – Cisco Packet Tracer topology Network-Documentation.md – Detailed configuration explanation Screenshots/ – Verification and configuration proof ✅ Project Status ✔ Completed ✔ Tested ✔ Verified