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Hello I have the following network setup

enter image description here

A, B, C and D are pc's with windows installed. A has internet access via a PCI wifi card and its connection is bridged to the ethernet port and then given to a switch with provides connection to B, C and D.

  • I want to block internet access to B, C and D.
  • 'A' is part of private network with static ip is it possible to create another private network on A, like 10.0.0.x and then B, C and D become part of this private network.
  • I need to do this so that I can install some custom software on A and distribute it to B, C and D so it would be preferred if I can set up fixed static IP's on B, C and D like, and so on.

Would this be possible with windows settings itself without installing 3rd party software?

EDIT: Actually I had to bridge the connections because E, F and G require internet access. I had missed that earlier.

  • What IP addresses do I assign to B, C, D.
  • 'A' already has a wifi NIC and an Inbuilt NIC that are bridged and A belongs to a network 192.168.0.xx
  • Connection to A comes from a Wifi router.
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up vote 1 down vote accepted

Yes it is possible, turn of the bridging between the wifi and ethernet.


I can see two options.

  1. Add a second ip address to the bridged interface (such as, and IP B, C, and D as you intended.
  2. Add another network card to A, and IP it as Connect B, C, D to a new switch, and that extra network card.
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will B, C and D still be connected on LAN to A if I do this? – Kevin Boyd Jul 17 '12 at 14:13
Yes, you will just need to give A an ip address on the same subnet that you are giving to B, C, and D – becomingwisest Jul 17 '12 at 14:18
becomingwisest, I've edited my question regarding why I had to bridge the connection. – Kevin Boyd Jul 20 '12 at 8:52
I like option 1, I have some questions, after adding the new ip address to A( and new Ip adresses to B, C, D in the same range, I don't want B, C and D to have internet access. Also other computers on the older(192.168.0.xx) network should be unable to view B, C and D. I want to share a folder on A with B, C, and D for this would I need to setup a workgroup or something like that? – Kevin Boyd Jul 21 '12 at 5:42
Another Question, As you see in the diagram the switch supplies connections to B, C , D and E, F, G. can the same switch reliably provide data to them even if they are of different IP's as per your plan 1. – Kevin Boyd Jul 21 '12 at 5:48

Why did you bridge the connections in the first place? If you simply added a nic that had internet access and left the internal nic on the internal network no internaet access would happen from any box other than A

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Jim, I've edited my question regarding why I had to bridge the connection. – Kevin Boyd Jul 20 '12 at 8:52

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