GNS3 allows you to manage connections between the routers, switches, and firewalls without risking the entire equipment breakdown. Some of the routers compatible with this application include Cisco CCNA, CCNP, CCIP, CCSP, CCVP and CCIE, Juniper JNCIA, JNCIS, or JNCIE.
Please check the installation tutorial:
It allows you to create the project from scratch based on your own needs and interests. Dragging and dropping the devices on the panel area can help you in the creation of a network. In case anything goes wrong, a warning message can be prompted, so that you can rectify your mistake. Once you have created a secured typology on the application, you can easily replicate it in the physical environment.
Moreover, it also allows you to adjust the criteria for each object you enter in the network topology.
The application is customizable, providing you with a view that would make the entire work easy. You can hide the layers and other buttons according to your needs.
GNS3 is an application to help you set up a network topology so that when replicated in the physical environment, there won’t be any risks.