=====Images=====

[[https://community.fortinet.com/t5/FortiGate/Technical-Tip-How-to-add-a-FortiGate-VM-into-the-GNS3/ta-p/242132|Fortigate]]

====IOS====

[[https://devsjournal.com/download-gns3-ios-image.html|Link 1]] [[https://www.sysnettechsolutions.com/en/cisco-ios-download-for-gns3/|Link 2]]

====ASA====

[[https://www.gns3.com/marketplace/appliances/cisco-asav|Download .gns3a Template]] und [[https://networkrare.com/download-cisco-asa-ios-image-for-gns3-and-eve-ng/|Cisco ASA GNS3 Images]]

=====Installation=====

====Ubuntu====

Dateien auf der GNS2 VM liegen unter 

<code>
/home/gns/GNS3
</code>

<code bash>
lscpu | grep Virtualization

sudo apt update && sudo apt upgrade -y
sudo apt install -y software-properties-common git curl wget net-tools htop unzip

sudo apt install -y qemu-kvm qemu-utils libvirt-daemon-system virt-manager ubridge

sudo usermod -aG kvm,libvirt,libvirt-qemu,ubridge,wireshark $USER

sudo add-apt-repository ppa:gns3/ppa -y
sudo apt update
sudo apt install -y gns3-server gns3-gui

gns3server --version
</code>

<code bash>
mkdir -p ~/.config/GNS3
nano ~/.config/GNS3/gns3_server.conf
</code>

<code ini>
[Server]
host = 0.0.0.0
port = 3080
protocol = http

[Logging]
console = True
log_level = info
</code>

<code bash>
# zum testen starten, mit ctrl-c beenden
gns3server
</code>

<code bash>
sudo tee /etc/systemd/system/gns3.service > /dev/null <<EOF
[Unit]
Description=GNS3 Server
After=network.target

[Service]
Type=simple
User=gns3
ExecStart=/usr/bin/gns3server --config /home/gns3/.config/GNS3/gns3_server.conf
Restart=on-failure

[Install]
WantedBy=multi-user.target
EOF
</code>

<code bash>
useradd -m -r -s /usr/sbin/nologin gns3
sudo -u gns3 mkdir -p /home/gns3/.config/GNS3
cp /root/.config/GNS3/gns3_server.conf /home/gns3/.config/GNS3/
chown -R gns3:gns3 /home/gns3/.config
</code>

<code bash>
sudo systemctl daemon-reload
sudo systemctl enable --now gns3
</code>

FIX?
<code>
# GNS3 -> Preferences -> Qemu -> General settings -> uncheck Use KVM where available.
apt install qemu-kvm qemu-system-x86 libvirt-daemon-system libvirt-clients bridge-utils

sudo usermod -aG kvm $USER
sudo usermod -aG libvirt $USER
sudo usermod -aG kvm $USER

sudo usermod -aG kvm gns3
sudo usermod -aG libvirt gns3
sudo usermod -aG kvm gns3

reboot
# GNS3 -> Preferences -> Qemu -> General settings -> check Use KVM where available.
</code>

<box red>Rechtsklick auf deine GNS3-VM -> Edit Settings; Tab VM Options öffnen; Unter CPU folgende Optionen aktivieren: Expose hardware-assisted virtualization to the guest OS</box>

=====WebUI=====

Im GNS3 GUI kann man unter "Tools" das Web UI aufrufen (beta)

<code>
http://<server-ip>:3080/
</code>

=====VNC=====

@ Zeichen
<code>
Shift + 2
</code>

Fullscreen Mode beenden
<code>
Ctrl-Alt-Shift + F
</code>

Besser noch: **TigerVNC installieren**. Im Menü 

<code>
Edit -> Preferences -> General -> VNC
</code>

den Pfad auf Custom setzen und die Datei "vncviewer.exe" aus dem TigerVNC-Installationsordner angeben.

=====Cloud=====

<box green>Sicherstellen dass das richtige Interface verbunden ist!</box>

=====Links=====

  * [[https://github.com/hegdepavankumar/Cisco-Images-for-GNS3-and-EVE-NG|Cisco Images for GNS3 and EVE-NG]]
  * [[https://www.sysnettechsolutions.com/en/cisco-ios-download-for-gns3/|Cisco IOS Images for GNS3]]
  * [[https://repo.tzku.at/|repo.tzku.at]]
  * [[https://networkrare.com/download-cisco-iou-iol-images-gns3-gns3-iou-vm-oracle-virtual-box-l2-l3-cisco-switch-images/|IOU Images]]
  * [[https://networkrare.com/free-download-cisco-ios-images-for-gns3-and-eve-ng/|IOS Images]]