GNS3

Network Simulator.

Ubuntu Install:

# Ubuntu install:
sudo add-apt-repository ppa:gns3/ppa
sudo apt update                                
sudo apt install gns3-gui gns3-server
# “sudo usermod -aG group user_name” 
ubridge libvirt kvm wireshark docker

# Install Docker:
$ curl -fsSL https://raw.githubusercontent.com/decyphertek-io/bash/main/docker.sh | bash

Debian 12 install:

# GNS3
sudo apt install -y python3-pip python3-pyqt5 python3-pyqt5.qtsvg python3-pyqt5.qtwebsockets qemu-kvm qemu-utils libvirt-clients libvirt-daemon-system virtinst \
wireshark xtightvncviewer apt-transport-https ca-certificates curl gnupg2 software-properties-common python3-pyqt5.qtwebengine vpcs mtools bridge-utils libpcap-dev 
sudo pip3 install gns3-server --break-system-packages
sudo pip3 install gns3-gui --break-system-packages

# GNS3 Ubridge Install 
git clone https://github.com/GNS3/ubridge.git && cd ubridge
make && sudo make install

# GNS3 Set permissions
sudo addgroup ubridge
sudo usermod -aG ubridge,libvirt,kvm,wireshark,docker $(whoami)

# Be sure to modify gns3_server.conf to point to /usr/local/bin/ubridge
sudo vim /home/$USER/.config/GNS3/2.2/gns3_server.conf
ubridge_path = /usr/local/bin/ubridge

References:

https://docs.gns3.com/docs/getting-started/installation/linux