This study examines the educational impact of integrating Cisco Packet Tracer as the primary simulation environment in a secure networking course, comparing its effectiveness with traditional hardware-based laboratory instruction. Employing an exploratory case study research design with complementary quantitative and qualitative components, the study analyzes performance indicators and student reflections to evaluate learning outcomes. The findings indicate that simulation-driven learning enhances technical proficiency in routing, switching, and secure configurations while increasing student motivation, confidence, and willingness to engage in iterative troubleshooting without the operational risks associated with physical equipment. The virtual environment also broadens equitable access to laboratory experiences, particularly for learners with limited hardware availability, and reduces environmental costs related to energy consumption and equipment acquisition.Beyond technical skill development, Packet Tracer enables a flexible, student-centered learning ecosystem that supports experimentation, self-paced exploration, and collaborative problem-solving. Participants described the simulation environment as a "risk-free sandbox", facilitating repeated practice and deeper conceptual understanding.Overall, the results suggest that simulation-based instruction provides a sustainable and scalable alternative for engineering programs seeking to develop adaptable professionals capable of integrating technical expertise with social responsibility while addressing institutional priorities related to cost efficiency, sustainability, and inclusive pedagogical design.
