Minimum 20 GB free space to store various appliance images. Step 1: Update Your System

To run GNS3 and its emulators without using sudo every time, add your current user to the necessary system groups. sudo usermod -aG ubridge,libvirt,kvm,wireshark,docker $USER Use code with caution.

You need both the (the backend that runs the emulators) and the gns3-gui (the frontend interface). sudo apt install gns3-gui gns3-server Use code with caution.

Select Yes to allow non-root users to capture packets for network analysis. Step 4: Install Support for Cisco IOU (Optional)

Open your terminal and ensure your system repositories are up to date. sudo apt update && sudo apt upgrade -y Use code with caution. Step 2: Add the Official GNS3 PPA