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Two broadband modems on one line, illegal? My story...

I live in a one family house that is split from the upstairs and downstairs. It is an illegal setup. Everything in the house is connected (like a regular one family house would be). My brother, me, and roommate all live upstairs, while two other people live downstairs. Again, there are no separate boxes for both floors. Anyway, getting to the point, when I first moved in I ordered basic cable and high speed internet from Comcast. Obviously, since we have cable upstairs, they have it downstairs as well.

It really didn't bother me that they were leeching off my cable, but then they started leeching off my internet as well. Without my knowledge. I eventually logged into my router and discovered that they were attached to it. That pissed me off. They don't pay for any of that. They can have cable, that's my gift to them, but using my internet as well is something else. I ended up blocking their internet access with MAC address filtering and a 128 bit encryption.

A few days later they call Comcast down and get their own box and cable modem. My downstairs neighbor wanted his own box so he could have some of the On-Demand stuff. They wanted internet access as well. My brother tells me of all this and I end up checking my router's attached devices and there they are. Are they still leeching off my connection? I'm guessing the cable guy added more splitters for them to get internet access.

This doesn't make sense to me. Won't Comcast see two cable bills going to the same house? Again, the house is not legally split up into two apartments. If I were to cancel my cable, it would probably shut off their cable as well. The same might be said for their internet, if I were to cancel my internet access, they might lose it as well.

Is it possible that I might get billed for what they did downstairs? I don't understand how they could get a separate bill for a one family house, or even how they got Comcast down there in the first place. They would've had to give Comcast information about where they live. Wouldn't Comcast see the address and see that there is already cable and internet there? Wouldn't they have to contact me first? Since I am the one who pays the bill. I need some help on this.

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So is this connection via WIFI?

In reply to: Two broadband modems on one line, illegal? My story...

If so why isn't the wifi setup per our forum sticky?

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(NT) Is there a good reason not to call Comcast about this??

In reply to: Two broadband modems on one line, illegal? My story...

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