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Windows Forum / Virtual PC / June 2008MAC address visibility for my ISP
Hello, I have two computers, both run Virtual PC 2007, Vista Ultimate as a host OS and XP Prof. XP2 as a guest OS in a virtual machine. On both computers I configured the guest OS to use the NIC of the host system. The host and guest OS have different MAC addresses (as showed by GetMac command line utility.) Both computers are directly connected to my ISP (I do not use a router). There is a web site of my ISP, where I can check, which MAC address my ISP sees. If I visit this site with the first computer, then my ISP always sees the same MAC address for the host and guest OS and everything runs fine. On the second computer, my ISP sees different MAC addresses for the host and guest OS. The ISP sees the same MAC address, that I also see, if I use GetMac command line utility on the guest or host OS. Because my ISP allows only one computer (e.g. one MAC address) to access the internet for a given account, I can not get internet access in the virtual machine of my second computer. (The login using PPPoE fails.) Now my question: How can I configure the second computer to have only one MAC address visible to my ISP? Kind regards S. Baumann >Now my question: How can I configure the second computer to have only one >MAC address visible to my ISP? Set the networking option in the second VM to "Shared networking (NAT)" To tell the truth, it's probably some kind of bug in you NIC driver that the 1st PC shows the same NIC for both host and guest, that's not the way it's supposed to work for assigning the NIC to the VM.  SignatureBob Comer <Microsoft MVP Windows - Virtual Machine> >Hello, > [quoted text clipped - 21 lines] >Kind regards >S. Baumann Hello Robert, > To tell the truth, it's probably some kind of bug in you NIC driver > that the 1st PC shows the same NIC for both host and guest, that's not > the way it's supposed to work for assigning the NIC to the VM. Thanks for the reply. This works. But it works better with the bug on my first computer, because I get the full bandwidth twice: once for the guest OS and once for the host OS, because my ISP does not expect this "feature". With Shared Networking, both OSs share the bandwidth that the ISP assigns to my Ethernet connection. There I times, when I like bugs :-) Kind regards S. Baumann >Thanks for the reply. This works. Cool. >There I times, when I like bugs :-) I can understand how it's advantageous, but it still seems kind of strange it works at all to me. <g> SignatureBob Comer >Hello Robert, > [quoted text clipped - 10 lines] >Kind regards >S. Baumann >Both computers are directly connected to my ISP (I do not use a >router). Note that by not using a router or other firewall your OSs are susceptible to being hijacked by viruses until you get the OS patches installed. Now this may not be applicable to Win XP or newer with their built in firewall. However that is certainly possible in Windows 2000 as I found out a few years ago at my aunt's place. I started up the Win2000 unpatched VPC and after ten minutes saw a Windows Messenger spam. Having never seen one before I said "Hey, look at that." Then I got to thinking and hastily unplugged the network card. My unpatched Win 2000 VPC had been infected with three virusses by then. Tony SignatureTony Toews, Microsoft Access MVP Please respond only in the newsgroups so that others can read the entire thread of messages. Microsoft Access Links, Hints, Tips & Accounting Systems at http://www.granite.ab.ca/accsmstr.htm Tony's Microsoft Access Blog - http://msmvps.com/blogs/access/ Windows Messenger isn't a virus you f.cking retard NET SEND 123.43.45.2 TONY SUCKS I used to play tricks on my roommates; about a decade ago.. and I'd name my machine 'Microsoft' and i'd send them messages.. it would say 'Message From Microsoft' WE HAVE DETECTED YOU ARE RUNNING PIRATED COPIES OF WINDOWS 98 PLEASE PURCHASE COPIES IMMEDIATELY'. ROFL -Aaron On Jun 24, 10:20 pm, "Tony Toews [MVP]" <tto...@telusplanet.net> wrote: > >Both computers are directly connected to my ISP (I do not use a > >router). [quoted text clipped - 17 lines] > Microsoft Access Links, Hints, Tips & Accounting Systems athttp://www.granite.ab.ca/accsmstr.htm > Tony'sMicrosoft Access Blog -http://msmvps.com/blogs/access/ I worked in Corporate Security at Microsoft.. investigated hundreds of outbreaks similiar to this. Even _Microsoft_ couldn't keep Windows XP secure-- AT ALL--- until XP SP2 came out. I've got the data to prove it ;) -Aaron On Jun 24, 10:20 pm, "Tony Toews [MVP]" <tto...@telusplanet.net> wrote: > >Both computers are directly connected to my ISP (I do not use a > >router). [quoted text clipped - 17 lines] > Microsoft Access Links, Hints, Tips & Accounting Systems athttp://www.granite.ab.ca/accsmstr.htm > Tony'sMicrosoft Access Blog -http://msmvps.com/blogs/access/ |
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