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can I use time capsule with mobile wi-fi

486 Views 12 Replies Latest reply: Dec 5, 2012 6:31 PM by Quixotic2 RSS
Quixotic2 Calculating status...
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Dec 4, 2012 7:37 PM

I'd like to share my Time Capsule with multiple computers but I get my wi-fi from a mobile transmitter, not a cable.  Is it still possible?

  • Bob Timmons Level 9 Level 9 (75,680 points)
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    Dec 4, 2012 7:56 PM (in response to Quixotic2)

    Still possible?  It never was possible.


    The Time Capsule needs an Ethernet connection at its WAN port to be able to "share" an Internet connection.

  • LaPastenague Level 7 Level 7 (32,820 points)
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    Dec 4, 2012 8:19 PM (in response to Quixotic2)

    If you like messing.. then you can get it working.. but big warning this is definitely not the way I would ever do a network or setup one that I have to support.. you will need to reboot things fairly often.


    Firstly what is mobile WiFi.. if you mean a standard 3G type device.. that has no ethernet.. buy a 3G router with ethernet.. they are cheap.. swap the sim or use the USB stick in the router.. it is 1000% better.


    If you receive the wifi on a computer.. you can then share that connection on the computer with the network via ethernet to the TC. In windows land we call it ICS.. Internet Connection Sharing.. built in to every windows and Mac OS since stone age.

    This means the computer is routing the network and must be turned on. Computers don't make particular good routers and many of the settings are tricky.. It is known as stopgap.. but may help.


    A wireless bridge could work in front of the TC.. in the same way as above..


    You will have double NAT issues.. you will have loads of flakeyness.. but it can work.


    IMHO go out and buy a 3G router of the correct type.. cheap now and far better if I understand what you mean by mobile wifi.

  • LaPastenague Level 7 Level 7 (32,820 points)
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    Dec 5, 2012 1:04 AM (in response to Quixotic2)



    • Sharing internet via the TC as a router. That would be helpful but not essential as I have a mobile router that gets internet via local transmission points and makes it available for up to 10 PC's that sign in to that signal and give the correct password.  So we can all browse the web using wireless, whether or not there is some ethernet cable plugged into the TC.



    The issue here is the computer cannot link to two different devices at once over wireless.. so if you do not connect the tc to the internet.. then you must choose.. internet or backup.

    Connecting more than one computer to the TC for backup purposes.  That's the main point.  For that, I'm hoping that the TC will serve as a hub for a LAN for my household even if there is no internet signal going to the TC. Since the TC is basically a hard disk plus airport express in one package (my crude way of phrasing it), it should (I'm hoping) it will work that way.  Perhaps I'll need to run an ethernet cable from the various computers to make it link up, but I hope I can do without the wires. 


    So you are going to have LAN and internet as two separate networks.


    You can do this by ethernet.. so each computer you want to backup plugs into the tc by ethernet.. it also means you need to use static manual IP setting on each computer with no gateway (Apple call it router) or DNS settings. otherwise that will mess up your Internet.. if you do that then you can simultaneously backup and have internet.

  • LaPastenague Level 7 Level 7 (32,820 points)
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    Dec 5, 2012 5:46 PM (in response to Quixotic2)

    Quixotic2 wrote:


    In answer to Bob Timmons earlier post:  apparently the TC can also get internet from a wi-fi transmission.  That's what it says in other forum posts, anyway.  My TC arrives in a couple of days and then I'll find out for sure.  Wish me luck!

    Bob is completely correct.. your question was to share your network.. The TC cannot share your network in join a network mode.. it becomes merely a client.. all sharing is done by the mobile wifi device.


    And this is a non-recommended method where you will cause extremely slow transfer to the TC due to double hop wireless.. do not expect it to really work well.


    We wish you luck.. in the words of Hans Solo.. You're gonna need it!!

  • LaPastenague Level 7 Level 7 (32,820 points)
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    Dec 5, 2012 6:07 PM (in response to Quixotic2)

    I doubt it will work.. let me get it clear the mobile wifi device has a USB port on it?? What is it for.. ?


    Without drivers a usb to ethernet adapter will not work.. ie they are only useful on a computer. They are useless on routers because you do not have drivers.


    What I said before, using two different networks.. can work with USB wireless sticks, rather than ethernet.


    The idea is still to have two entirely different networks bridged across at the computer.. the secondary network I suggested using ethernet.. well actually I think you suggested it. You cannot connect simultaneously to two different wireless networks.. but you can run a second wireless client device in the computer.. ie a wireless USB stick.. there are plenty around, cheap and will have drivers for Mac.. just google or search in ebay.


    The trick is still manually setting IP address to prevent having multiple gateways.. although the computers can sort it out if you have the network devices in the right order.. mostly.. I find some secondary IP devices mess things up.. some are ok.. but the correct method is to use IP address without gateway and DNS>

  • LaPastenague Level 7 Level 7 (32,820 points)
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    Dec 5, 2012 6:08 PM (in response to LaPastenague)

    Why not just buy a proper mobile wifi router that has ethernet.. that is what you need and will solve the problem.


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