Filius

Filius is an educational network simulator designed to help users understand the fundamentals of computer networking. Operating on Linux systems, the software allows learners to construct virtual networks by placing components such as computers, switches, routers, and cables on a workspace. Users can configure IP addresses, set up routing tables, and observe data transmission between simulated nodes in real time.

The application includes two primary phases: a design mode for building network topologies and a simulation mode for testing communication protocols. Learners can use integrated software tools like command-line terminals, web browsers, and chat clients on the virtual devices to generate network traffic. The program is tailored for classroom instruction and self-study, focusing on foundational concepts rather than enterprise-grade simulation complexity.