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| layout | title | permalink |
|---|---|---|
| wiki | NetworkBridgeSupport | /wiki/NetworkBridgeSupport/ |
Network Bridge Support (EXPERIMENTAL and UNSUPPORTED)
The Qubes developpement team does not support bridging the network interfaces found in NetVM and don't plan to support it at all. Several reasons for that:
- Using a bridged VM is almost only necessary for developpers testing or working on OSI layer 2 or layer 3 tools (MAC or routing protocols). If not for testing, such tools are almost only used directly on routers ...).
- Most of these tools can be anyway used directly inside the NetVM, which has direct access to the network card.
- It is also possible to use a secondary network card plugged into a specific development VM.
- Such a setup could break security features of Qubes such as AppVM firewalling.
Now if you really want to work with OSI layer2 / layer 3 tools, that you don't have a secondary network card, or that you want to completely expose services of a given AppVM (at your own risk), a bridged setup may help you.
Qubes manager patch (Qubes R2B3)
The following patches can be applied to the Qubes Manager GUI in order to add an option to easily bridge a VM. Use it at your own risk. If the patch breaks the Qubes Manager, you can try to restore the qubes packages:
# qubes-dom-update qubes-core-dom0 qubes-manager
# yum reinstall qubes-core-dom0
# yum reinstall qubes-manager
First, retrieve the attachment of this Wifi article in dom0. Then apply the three patches the following way:
# patch /usr/lib64/python2.7/site-package/qubes/qubes.py < qubes.py-bridge.diff
# patch /usr/lib64/python2.7/site-package/qubesmanager/settings.py < settings.py-bridge.diff
# patch /usr/lib64/python2.7/site-package/qubesmanager/ui_settingsdlg.py < ui_settingsdlg.py-bridge.diff
Finally restart the qubes manager GUI.
A new option is now available in the AppVM Settings to enable set the NetVM in bridge mode. For a bridged AppVM, you should the select a netvm instead of a firewall vm, enabled the Bridge option and restart your AppVM.