How to Set HyperV NIC in Promiscuous Mode

Posted on 2008-11-07
Last Modified: 2013-11-11
I tried to install Websens Express on a virtual machine windows server 2003 64bit.
My virtual server is windows enterprise 2008 64bit with Hyper-V. I need to set a NIC in promiscuouc Mode. I does anything to my NIC because I doesn't see any paramters to set the promiscucouc mode on the phisical NIC level. I installed Wireshark on the virtual server 2008, and I can see all the trafic.
I create a virtual network in Hyper-V, with my monitor NIC and bind this virtual network to my VM. But Websens, in the VM, can't see the traffic. If I install wireshark on the VM, I can't see the traffic.

In this article, it seems to not work. But I would like to know your opinion and any suggestion

Question by:syselcom
    LVL 15

    Accepted Solution

    Yeah, this doesn't seem to be supported.

    The virtual networking options in Hyper-V (& Virtual Server) are somewhat underwhelming. They perform as a normal switch would (each port being its own collission domain) so of course you aren't going to see the traffic as you would if you were on a hub (for example).

    The best way to do this would be to set up a box that acts as a router between your environment and the outside and have that box run any monitoring software you require.

    Author Closing Comment

    Thanks for you reply.
    I contacted Microsoft and the answer was the same. it's not supported on HyperV. I don't know if it will be in the futur.


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