How to learn about Computer Networks without having to mess up your own.

Share this post This last task is more important if your business is small and just beginning, especially if you have fewer employees to guide your decisions. Sometimes you may need to do some technical work yourself to assist when you don’t have the staff. This means that you should try to be more familiar with the technology used in your network.

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Technology is the backbone for modern businesses. Without a well-organized network, employees can’t be as productive as they can. You are responsible for making decisions about your computer networks as a business leader. However, if you don’t have a background or knowledge in tech, this task might be difficult. How can we accomplish this without affecting our work network? There are many options available to help you understand the basics of networking without having to alter your current setup. GNS3 is one of the most flexible and effective options.
What is GNS3?
GNS3 is a free, open-source network simulation program. You can download it from this link. It is available on several sites, but you can download it directly from their website by registering.
GNS3 emulates real networks running router software like Cisco Internetworking Operating System images in an emulator program. The simulated router interface feels and looks just like a real router. GNS3 offers a simple graphical environment. This allows you to create complex lab topologies and integrate Cisco routers with learning network systems to improve your company’s performance.
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GNS3 is a collection of individual programs that produce the simulations and emulations required for networking practice.
Dynamips does the heavy lifting and emulates Cisco routers using your Cisco IOS.
Qemu emulates many operating systems, including Cisco ASA and PIX as well as Windows, Linux, and IDS.
Virtual PC Simulator does not emulate machines like the programs above, but it does provide network commands similar to a Windows or Linux program.
PuTTY is a Telnet that allows computers to log in to each other — an essential step in network design.
WinPcap allows you to send and receive packets via simulation.
Wireshark lets you inspect packets in transit to verify that they are following the correct protocol.
GNS3 has a few advantages over tinkering on a live network. You can test different configurations without having to invest in expensive network hardware. You can also test out different network vendors without having to commit to their services. This feature has seen improvements over the life of GNS3. If the software can be emulated and is supported, you can save money on hardware. However, there are some limitations to this as certain hardware cannot be emulated. GNS3 does not provide the images or software. You will need your own images to use it.
Who uses GNS3?

Professionals can benefit from playing around with GNS3 software first. This is because business leaders as well as aspiring workers in tech tend to play around with the software before they start building their networks. Although it can be difficult to learn how to use GNS3 software, it is possible if you have some knowledge of tech concepts.
Both startups and mega-corporations stand to benefit from employees using the program. GNS3 is used proudly by many well-known organisations, including:
NASA
IBM
Deutsche Bank
Chevron
Pfizer
Verizon
GNS3 users include some of the most prominent and small-sized companies in the world. No matter what your business is, you should learn about it.
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Moving on from GNS3
GNS3 is essential for anyone who wants to pursue network engineering as their career. GNS3 is a tool that allows candidates to demonstrate their ability to configure. There are many vendor certification exams that test network engineers. GNS3 is taught in graduate computer science programs. This could give you an advantage in your education and career.
Once you have learned how to use GNS3 for creating a network that meets your business’s needs, you will be closer to mastering network engineering. GNS3 skills will be valuable for many years to come.