Re: 3g Ps3
Not sure what you mean by a "ps3," but I just went through this last night with a Sprint 3g aircard.
Sprint wants to sell its customers a gizmo that is essentially a wireless network, but for internet only. I switched to them a couple of months ago from cable internet and also finished refurbishing a couple of computers, so I wanted to get my network going again.
The trick to using a USB aircard to feed internet to a network, is to have one computer receive internet directly from the card, and set the others up to receive internet from that computer. You don't want each one trying to get internet through a router, as you might with DSL or cable. When you go through the "set up a home network" wizard, you will see what I am talking about.
You also have to pick the right connection (host computer) in "Network Connections." When you get to that window, you will see "Dial-up" connections and "LAN or High-Speed Internet." Because you are using a network, its easy to make the mistake of trying to select one of the options in the second group. A cellular aircard is treated by Network Connections as a Dial-Up connection, so that's what you want. In this case too, its easy to make a mistake, because you will see an option for a CDMA connection and a 3G connection - the CDMA connection (which should describe your USB aircard too) is what you need to use.
Next on the list is your firewall - that must be set properly to allow the satelite computers to receive internet via the network. I use Zone Alarm and am currently fighting with it to allow traffic to pass. For some reason, it doesn't want to do this, even though I have my network set as a "Trusted Zone." Until I get this figured out, I will have to kill my firewall, if I want internet access on the other computers. This is not something that I am very comfortable doing, so I'll be doing my homework on the subject later today.
The bottom line is, yes, you can do what you want to do.
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