Actually I do a similar thing.
I use a VM as my home/office firewall.
It works quite well and I would argue it is as secure as your standard
firewall based on something like openWRT running on dedicated hardware.
I also run a wireless AP in bridged mode to allow local network access
on an appliance.
There should be no reason that you could not put both on the same
physical hardware.
As for the openvswitch original question.
Openvswitch has an API that you can access to manage your traffic along
with supporting Openflow.
If you can get events from your wireless interface then you could write
some programs to connect to the switch API.
I am not sure the overall result is worth the effort but it will teach
you lots about your wifi interface and Openvswitch.
On 09/24/2015 06:59 AM, Dmitry E. Mikhailov wrote:
On 09/24/2015 03:21 PM, C. L. Martinez wrote:
Thanks Dimitry, but I use wlan0 or eth0 to connect my laptop to
different networks. I use a vm as fw and I would like to have all vms
and laptop behind this fw vm guest.
Another option is to assign an IP to these interfaces and natting all
to this fw vm ... but I don't like this option
It isn't going to be safe, simple and reliable. You won't have
anything like 'NetworkManager' on the laptop host OS. It either should
be heavily scripted or not done at all.
You could write some fancy ebtables rules to do one-to-one MAC mapping
between the fw VM interface and host interface and run DHCP client on
the fw VM.
On the host you'd have static route to another fw VM interface.
But I can't imagine all the hotplug event scripting. How could fw VM
find out if it's time to (re-)run DHCP client? How would you configure
WPA keys on the host. How would find out if WiFi is disconnected,
cable is connected and it's time to redo MAC mapping with another MAC
address?
Without some real effort it's going to be fully(partly?) manual config
with wpa_supplicant, ebtables and ssh'ing to fw VM involved. I doubt I
would like to change from NetworkManager to this stuff instead.
That's why they do https://www.anonabox.com/
Otherwise you can get some OpenWRT on a commodity router to run some
VPN or T#r or some other funny stuff
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