This project explores the execution and impact of ARP and DNS spoofing attacks in a simulated lab environment using Kali Linux and Windows 7 VMs on Oracle VirtualBox. It demonstrates how attackers can intercept and manipulate network traffic using spoofing techniques and evaluates countermeasures such as firewalls and ACLs. The goal is to raise awareness about network vulnerabilities and explore mitigation strategies in a safe, ethical, and academic context.