Hyper-V NIC in promiscuous mode

Question

Hello,
    Is there a way to setup a NIC in hyper-V or the Hyper-V virtual Swith to support promisuous mode for Web Filtering Software like websense?
Thank
ML

Answer 1

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Victor, what you've posted is a description on how to monitor one VM's traffic on another VM inside the same Hyper-V, but what is needed, is to monitor traffic from some physical PCs on a VM, for example:
There are machines A, B, and the Hyper-V host machine, all connected to the same physical switch, like HP Procurve or some Cisco device, etc. We can setup port mirroring on that switch (SPAN), so that all the traffic between A and B would be mirrored to
the Hyper-V host machine port, and we even can monitor that traffic on the Hyper-V host. But what is needed, is to pass that mirrored traffic, coming from outside of Hyper-V to a guest virtual machine. Is there any way of doing that using the Hyper-V settings
or some 3rd party switch extensions?
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https://blogs.technet.com/b/koalra/archive/2012/11/07/windows-server-2012-hyper-v-mirroring.aspx?Redirected=true
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TechNet Blogs }} Ko Allah's White House ... }}  Windows
Server 2012 Hyper-V, port
monitoring (Mirroring)-based network
management
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Seung Joo Baek
7 Nov 2012 1:25 AM                           
the physical ports the port mirroring. Windows Server 2012 R2 and capture driver
for my Hyper-V virtual switch extensions can be done through NDIS.
This can be enabled by the PowerShell, cmdlets are:
$a = Get-VMSystemSwitchExtensionPortFeature -FeatureId 776e0ba7-94a1-41c8-8f28-951f524251b5
$a.SettingData.MonitorMode = 2
add-VMSwitchExtensionPortFeature -ExternalPort -SwitchName name_of_the_switch -VMSwitchExtensionFeature $a
 Wouldn't that difficult?
Related switch expansion port of the NDIS,
the identity of the captured driver,
unplug the monitor mode 2 (port monitoring)
and, in addition to the external port related functions.
This involves a process, the external port is connected to a physical switch occurred on the VM in the packet will be monitored.
Not a physical port setting, VM-to-be a part of it, for the time when, if you look at it, never to get a glimpse of the classroom.
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Plus:
TechNet Blogs»
Russian Windows Virtualization Discussion»
Hyper-V Port Mirroring – захват внешнего трафика с физического интерфейса
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Alex A. Kibkalo
5nine Software
12 Mar 2014 8:27 PM
I  (
Alex A. Kibkalo )
was asked several times whether Hyper-V Configure Port Mirroring so that traffic from the physical interface on top of a virtual switch, the whole thing
went to the “LAN traffic mirroring” virtual machine for analysis. VMware is able do this, and Hyper-V Port Mirroring by default captures only traffic caught inside the
virtual switch-external traffic, of course, is not a particular VM, there simply is not.
While working in theMicrosoft
team, I had a conversation on the subject
Unfortunately, I do not remember with whom exactly :-(
The rare and is not documented. It was recently found a solution to this problem.
The following method works on nodes with Windows Server 2012 R2.
Windows Server 2012 update must be installed
2885541
So, you will need to Configure Port Mirroring Destination mode for the machine which will channel bandwidth.
For virtual switch is required to enable NDIS Capture.
As a traffic source configure the external port of the virtual switch with the help of PowerShell commands:
$a = Get-VMSystemSwitchExtensionPortFeature -Name “Ethernet Switch Port Security Settings”
$a.SettingData.MonitorMode = 2
add-VMSwitchExtensionPortFeature -ExternalPort –SwitchName v-switch_name -VMSwitchExtensionFeature $a
 I would be glad, if somebody will help.
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