Here's my situation:

• I use Comcast for Broadband on my home PC. It only alots 1TB per month, then stuff starts to get REALLY expensive.
• I also have an unlimited plan for Verizon Wireless for my family's cell phone plan, which includes unlimited hotspot.
• (You probably already see where I'm going with this)
• I have a LAN NIC (adapter) that is connected to Comcast, as well as my local network.
• I also have a separate Wireless NIC.
• When my Comcast data runs out, I want to completely block ALL *internet* access on my LAN NIC, while still allowing me to use my local network, to access shared folders, my security cam, etc.,  so I don't get charged for anything else by Comcast (the greedy mutts. ).
• THEN, I'll enable my phone's Wi-Fi hotspot, and use my Wi-Fi NIC purely for internet, until the next month where my Comcast plan resets.

Most firewall software have a feature to "block all internet access", which is great, but it only works for the entire internet connection, so if I do that, I'm still unable to get internet with my hotspot. If I could simply block all internet to my LAN NIC, while not blocking internet to any other adapters, it would be perfect!

Thanks for any help!

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