![]() |
![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
| Welcome to Windows Vista Forums. Our forum is dedicated to helping you find solutions with any problems, errors or issues you are experiencing with Windows Vista. The Vista forum also covers news and updates and has an extensive Windows Vista tutorial section that covers a wide range of tips and tricks. |
| |||||||
![]() |
| |
| | #1 (permalink) |
| | VS 2005 R2: Promiscuous mode ethernet on for VM running Wireshark? All, QUESTION: Is it possible for a VM to promiscuously listen to *all* packets coming in on a physical NIC on the VS 2005 R2 host, where the VM has a dedicated connection to that NIC? Searches for "promiscuous" and "wireshark" returned no results... Searching other forums, it appears that modifying the "allow_promiscuous_mode" parameter in a VM's .vmc file will *only* set a Virtual Network switch (which has multiple VM's attached) to promiscuous mode, allowing VM's to see each other's traffic on the shared virtual switch. But in the case where a VM has a dedicated "bridged" connection to a physical NIC on the MSVS host, we have the need (for a networking class) to run Wireshark on the VM to monitor *all* packets that are presented to the physical NIC on the MSVS host - the NIC is connected to an external switch that has been set up to "mirror" all packets from another port. The port counters indicate that all the packets *are* being sent out the attached port on teh switch - but Wireshark on the VM (Windows XP Pro) only sees packets that are either multicast/broadcast, or are unicast to the VM's Unicast MAC address. It appears this is not possible, or is a limitation of VS 2005 R2 - but I'm hoping for a definitive answer.... Fwiw, this *does* work on ESX 3.5.. Many thanks, best regards, -Chuck O. |
My System Specs![]() |
| | #2 (permalink) |
| | Re: VS 2005 R2: Promiscuous mode ethernet on for VM running Wireshark? On Wed, 29 Jul 2009 06:23:01 -0700, chucko <chucko@newsgroup> wrote: Quote: > All, > >QUESTION: Is it possible for a VM to promiscuously listen to *all* packets >coming in on a physical NIC on the VS 2005 R2 host, where the VM has a >dedicated connection to that NIC? > > Searches for "promiscuous" and "wireshark" returned no results... >Searching other forums, it appears that modifying the >"allow_promiscuous_mode" parameter in a VM's .vmc file will *only* set a >Virtual Network switch (which has multiple VM's attached) to promiscuous >mode, allowing VM's to see each other's traffic on the shared virtual switch. > > But in the case where a VM has a dedicated "bridged" connection to a >physical NIC on the MSVS host, we have the need (for a networking class) to >run Wireshark on the VM to monitor *all* packets that are presented to the >physical NIC on the MSVS host - the NIC is connected to an external switch >that has been set up to "mirror" all packets from another port. The port >counters indicate that all the packets *are* being sent out the attached port >on teh switch - but Wireshark on the VM (Windows XP Pro) only sees packets >that are either multicast/broadcast, or are unicast to the VM's Unicast MAC >address. > > It appears this is not possible, or is a limitation of VS 2005 R2 - >but I'm hoping for a definitive answer.... Fwiw, this *does* work on ESX 3.5.. > > Many thanks, best regards, > >-Chuck O. before it gets to the VM's virtual NIC. For details, see Ben's blog: http://blogs.msdn.com/virtual_pc_guy...27/774228.aspx -- Cheers, Steve Jain, Virtual Machine MVP http://vpc.essjae.com/ |
My System Specs![]() |
![]() |
| Thread Tools | |
| |
Similar Threads | ||||
| Thread | Forum | |||
| Running W7 in VSRV 2005 R2 | Virtual Server | |||
| Ethernet Adapter turns off after sleep mode | Vista General | |||
| Running VS 2008 and MSSQL 2005 on a laptop | .NET General | |||
| Vista Laptop Can't Connect to Internet via Ethernet, WiFi, or Mode | Vista networking & sharing | |||