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How do I share an Internet Connection between two sets of devices on different floors?

I have a DSL Modem upstairs. It has four Ethernet ports. My computer is plugged into one of the Ethernet ports with an Ethernet cable. It connects to the Internet through the Modem. But the problem is, my other computer, my Xbox 360, and my PlayStation 2 are downstairs. How do I get the Internet connection from the DSL Modem upstairs to work with my PC, 360, and PS2 downstairs? Do I need to buy a Wireless Router, put it downstairs, and have it wirelessly connect with the modem upstairs? I cannot run 3 Ethernet cables from downstairs to upstairs, mainly because it isn't very practical, but also because my computer room upstairs and my computer/game room downstairs are on opposite sides of the house. So how do I share the connection?

Public Comments

  1. You will need a wireless router connected to the DSl modem. You will then need wireless adapters for the terminals downstairs. i don't know if PS2 and XBox 360 have USB 2.0 ports. To get the desired speed you'll want you'll need USB 2.0. USB 1 will work also but it will be slower. If your house encompasses more than 100 or so yds from the router you may also have connection problems. So if you live in a 25 room mansion you may need an amp to boost the signal (LOL). Seriously though, the next thing you want to do is security enable the wireless devices on your ntwk, otherwise, your neighbor may freeload off your signal and hog your bandwidth. You have to only allow the ip addresses you specify to have access to your wireless ntwk.
  2. I would first try a wireless router. If that doesn't work, then a powerline ethernet adapter. router recmd': http://adviceonstuff.com/?p=40 powerline ethernet: http://netgear.com/Products/PowerlineNetworking/PowerlineEthernetAdapters.aspx
  3. Sine you don't want to use ethernet cables you need to get a wireless router. Connect the modem to the router with an ethernet, another ethernet cable from the main pc connect to one the LAN ports on the router. The other pc, xbox 360 and ps3 can use the wireless connection. For the xbox360, you need to buy a xbox 360 wireless adapter since the xbox 360 only have the ethernet port and no wireless built-in. The PS3 60Gb will have wireless built-in so you're ok there.
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