Directing Internet Explorer to second NIC

October 27, 2009 at 07:22:41
Specs: Windows XP Pro
I have a situation on one of our office computers that is connected to a secure state network that doesn't allow internet access through their network. I thought I could get internet access by installing a second network card and connecting it to our internet router, but when I open Internet Explorer it still says internet access is blocked. How do I redirect Internet Explorer to use the second network card that is connected to our internet router? Additional info: When I remove the state network cable from the first network card in the computer I get internet access through the second network card just fine. Computer has Windows XP Pro on it.


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October 27, 2009 at 07:44:03
It is most probably that they have your I.E. setup with a Proxy to a none existing proxy server. Go to Tool -> Internet Options -> Connections -> Click the LAN settings and verify they don't. This is how we prevent people from getting on the internet.

Also, you may want to double check your Acceptable Use policy you signed when you got hired. This could be grounds for a fireing or at least it is here.

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October 27, 2009 at 08:05:05
Thanks for the reply. There is no proxy set up. It's using IEs default settings. They have a T1 line to my building, then a router that connects to the PCs that need to access their network. The block is on their end. No fear of getting fired...I own the company. Thanks, Keith

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October 27, 2009 at 08:20:37
The problem is you have two gateways. You need a gateway to get to the State network and a gateway to get to the internet.

The easiest solution in your case is to disable the State interface when you want to get on the internet. This is like pulling the cable but logically not physically.

You disable/enable the interface by right mouse clicking on My Network Places and going to properties. Right mouse click on the lan interface to enable or disable.

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October 27, 2009 at 08:52:20
You say the easiest way...what is the other way. I would like to be able to use the state software and the internet at the same time.

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October 27, 2009 at 10:22:39
That could compromise the security at the State by making your pc a gateway to them from the internet.

You can try adding metric to the state connection. So if your internet is metric=1 make the state metric=10. This is done in tcp/ip advanced properties.

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October 27, 2009 at 14:44:44
Then how do I get IE to use the second NIC to access the internet instead of the first NIC?

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October 27, 2009 at 15:13:29
Ever hear of the OSI model? It is seven layers and is the blueprint for computing design.

Networking is layer3 - ip routing
Applications are layer7 - IE

Unless the app has a ip console to specify a route or server you have NO control since this is handled at layer3.

I have given you two choices. Manually enable/disable the state interface when you want to get on the internet or try setting the metric on the state line higher so it is the less preferred route.

Your choice. There is not a third option that I am aware of.
Well there is but its not practical. You get a dual wan port router, have both state and internet go into it, configure the rules and then only connect one pc nic to it. How you configure dns, or in this case which dns server you use gets a bit more complicated.

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October 27, 2009 at 17:09:53
I'll give that a try.

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