GNS3

GNS3 is a powerful free software through which you can create your own virtual networks without using any hardware. It's enough to simply have an idea about the network you want to create to start testing your new virtual environment without risks.

On GNS3, you'll find an interface designed to help you develop each project without too many difficulties. If you have some basic knowledge, it won't take long to master the way this program works. By adding each part of the structure, you'll be able to assemble a network that fulfills whatever function you're looking for. In fact, before finishing the job, you can always test that everything is working properly.

Best of all, GNS3 allows you to design networks of any size. No matter how complex the structure may seem, this tool will provide you with the necessary features to develop each project without spending too much time on it. In fact, you can also create dynamic network maps with which you can solve problems and provide proofs of concept.

GNS3 is a really easy-to-use program that's useful for both students and professionals in this field. Without needing hardware or home labs, you can develop your own network in a matter of hours.