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GNS3 WebClient pack

Client pack to use with the web Ui via protocol handlers

Supported protocol handlers

The GNS3 WebClient currently support these URL schemes:

  • gns3+telnet for Telnet consoles
  • gns3+vnc for VNC consoles
  • gns3+spice for SPICE consoles
  • gns3+pcap for packet captures

URLs can include the following parameters:

  • name is the name or hostname of a GNS3 node or the description of a packet capture
  • project_id is the GNS3 project UUID
  • node_id is the GNS3 node UUID
  • link_id is the GNS3 link UUID

URL examples

Telnet console with all parameters

gns3+telnet://localhost:6000?name=R1&project_id=1234&node_id=5678

VNC console

gns3+vnc://localhost:5901

SPICE console

gns3+spice://localhost:5000

Packet capture

gns3+pcap://localhost:3080?project_id=d991dbc0-b98f-42aa-88b2-288170cca9c7&link_id=5c7f5285-ba2f-4ff6-8741-d1a77324441a&name=MyPacketCapture

Installation

Windows

Use the provided installer. Protocol handlers are registered during the installation.

macOS

Drag and drop the app from the DMG into /Applications. Start the app at least once to register the protocol handlers.

Linux (Debian package)

ONLY FOR UBUNTU AT THE MOMENT

You can install gns3-webclient-pack from our official PPA:

sudo add-apt-repository ppa:gns3/unstable
sudo apt-get update
sudo apt-get install gns3-webclient-pack

or download .deb packages from here.

The Debian package will install all dependencies including telnet, vinagre, virt-viewer and wireshark.

Linux (Pypi package)

sudo python3 -m pip install gns3-webclient-pack
sudo gns3-webclient-config --install-mime-types

You may have to manually install dependencies including telnet, vinagre, virt-viewer and wireshark.

Linux script installation

Alternatively, you can install gns3-webclient-pack from terminal using the following command:

wget -qO- https://raw.githubusercontent.com/GNS3/gns3-webclient-pack/master/install.sh | sh

This method should work on most Linux distros. Please open an new issue if this is not the case.

Debugging

Use the xdg-open tool on Linux (from the xdg-utils package). For instance to start a Telnet console:

xdg-open "gns3+telnet://127.0.0.1:5000/PC1"

On other platforms, check the launcher logs:

  • Windows: %APPDATA%\GNS3\WebClient\launcher.log
  • Linux and MacOS: ~/.config/GNS3/WebClient/launcher.log

Tips

How to fix Chrome protocol handler “Always open these types of links in the associated app” pop up.

Windows

Save the following content in a .reg file and execute as an Administrator.

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Chrome]
"ExternalProtocolDialogShowAlwaysOpenCheckbox"=dword:00000001

Note: the GNS3 all-in-one installer already does this.

Linux

First, start bash as root:

sudo bash

Then execute the following to allow Chrome to open the GNS3 protocol handlers.

mkdir -p /etc/opt/chrome/policies/{managed,recommended}
cat <<EOF >/etc/opt/chrome/policies/managed/allow_gns3_protocols.json
{
  "URLAllowlist": [
    "gns3+telnet:*",
    "gns3+vnc:*",
    "gns3+spice:*", 
    "gns3+pcap:*" 
  ]
}
EOF

MacOS

Run the following in a terminal.

defaults write com.google.Chrome URLWhitelist -array 'gns3+telnet://*' 'gns3+vnc://*' 'gns3+spice://*' 'gns3+pcap://*'