GNS3 is an open source software which visualizes, plans, tests and troubleshoost network environments across any vendor platform at scale - without the need to directly interact with the network hardware.
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Packet Tracer
Score 10.0 out of 10
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Packet Tracer is a network modeling and simulation tool allowing the user to build model networks, useful for when the available hardware is expensive. Packet Tracer can be used in training courses and education, or for modeling various scenarios.
If you want to design a network that contains devices from different vendors and you want to implement and monitor this network and make sure of the stability of this network before actually implementing it physically, then this is the right program. It allows you to design a complete network with different components and from different vendors with the possibility of integrating various devices and also linking them with network monitoring programs.
Very suitable for educational purposes or for training new employees on a virtual system. It is also very suitable for making initial designs for networks and presenting them to clients before starting implementation. Unfortunately, it is not suitable for network testing and penetration testing. Also, it is not possible to add Firewall devices from other companies.
