How to Install GNS3 on Ubuntu

GNS3 (Graphical Network Simulator-3) is a network emulation tool used by professionals and students to simulate network topologies. In this article, we explain how to install GNS3 on Ubuntu step by step.

Step 1: Add the GNS3 repository

To install GNS3 on Ubuntu, you first need to add the official repository by running the following command in the terminal:

sudo add-apt-repository ppa:gns3/ppa

Step 2: Update the package list

Then, update the package list with:

sudo apt update

This step ensures that the system recognizes the new repository before proceeding with the installation.

Step 3: Install GNS3

Now you can install GNS3 along with its server by running:

sudo apt install gns3-gui gns3-server

With these steps, you now have GNS3 installed and configured on your Ubuntu system. If you wish to integrate Docker into GNS3, you can review our article on installing Docker on Ubuntu: Docker

If you want to run GNS3 without superuser permissions and use Docker within GNS3, add your user to the following groups:

4. Test the Docker installation

sudo usermod -aG ubridge,libvirt,kvm,wireshark,docker $(whoami)

You can restart the session or use the following command to apply the changes:

newgrp

Conclusion

With GNS3 installed on Ubuntu, you can simulate complex networks without the need for physical hardware. This tool is ideal for students and professionals who want to improve their knowledge and prepare for certifications. Additionally, its integration with Docker expands the possibilities for virtualization and scalability.

Exploring its functionalities will allow you to gain practical experience and tackle real-world challenges in the field of networking. Now, you are all set to start designing and testing your own network topologies with GNS3.

Source: GNS3