Windows 7 Pro with 2 NICs only uses 1 at a time

Hello. I've seen similar questions to this but have not run across a satisfactory answer. When I use my work laptop at home, I connect the (wired) Ethernet to a VPN box that establishes a connection through my home router to work. It gives the laptop an IP address in a different network than the router's internal 192.168.1.0. So it's like another router as far as my laptop is concerned. Unfortunately this box does not give me access to all the things I need to hit on the corporate LAN (and there are various reasons why that won't be fixed).

There is also a software VPN client on the laptop that does allow me to reach those things on the corporate LAN I can't reach through the box. As you might imagine though, it too has limitations. And I can't use both at the same time; the client inserts itself as the default gateway with a metric of 1.

So I thought I'd be smart and force the client out the WiFi interface and keep the box connected to the Ethernet. Even after specifying the box as the gateway for certain networks, traffic to those networks will not use that interface. I have tried messing with the metrics but it STILL doesn't work. Any suggesions?
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  1. So if I read this right you removed the default route from the ethernet port and put in static route entries for just those networks and pointed them to the vpn hardware device.

    You then bring up the VPN and leave it be the default route.

    In general this should work assuming it is allowed.

    First thing to check is you can ping the ip of the hardware VPN box. It should since it is directly connected to the PC. Then you can try to ping stuff you static routed into the hardware devices and see how far you get.

    The most common cause of this is the software VPN is preventing you from doing it because of split tunnel. Sometimes it will prevent you from even having access to any other local network, or it could be configured to allow the local networks but no remote ones.

    First I would ask your company IT guys if the software VPN solution allows split tunnel and if they can allow it. The company I work for does not allow you to run split tunnel. The work around our "smart" users figured out is that you can use virtual machines to get past this restriction.
  2. bill001g said:
    The most common cause of this is the software VPN is preventing you from doing it because of split tunnel. Sometimes it will prevent you from even having access to any other local network, or it could be configured to allow the local networks but no remote ones.

    First I would ask your company IT guys if the software VPN solution allows split tunnel and if they can allow it...


    Thanks Bill. I was pretty sure that was the case. Split tunneling is not allowed either at my work and even though my "solution" uses two different tunnels that are both authorized by my work (by two different factions) I don't think IT would appreciate me attempting this. And even if they didn't mind, I doubt I would get them to help me out.

    I was hoping it is was a Windows 7 issue that I could work around or there was a setting that I hadn't considered.
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