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Thread: Cell phone hotspot interferes with Ethernet connection.

  1. #1

    Default Cell phone hotspot interferes with Ethernet connection.

    I was told I couldn't use my cell phone to create a Wi-fi hotspot because it would interfere with my apartment building's wired LAN. Is this true?

    I was under the impression that wired and wireless connections don't interfere with each other, especially since, in my case, they don't even share the same ISP.

  2. #2
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    Default Re: Cell phone hotspot interferes with Ethernet connection.

    On Mon, 18 Mar 2013 16:56:01 +0000, miaceves wrote:

    > I was told I couldn't use my cell phone to create a Wi-fi hotspot
    > because it would interfere with my apartment building's wired LAN. Is
    > this true?


    That is complete nonsense (not to mention technically impossible without
    additional hardware to connect the hotspot to the wired network.
    Creating a second gateway out of the building on that network would cause
    a problem). If it interfered with the wired network, then you wouldn't
    be able to use anything that generated an RF signal.

    > I was under the impression that wired and wireless connections don't
    > interfere with each other, especially since, in my case, they don't even
    > share the same ISP.


    What *can* happen is that if you connect to a hotspot, your default route
    will go through the hotspot rather than the wired connection.

    Jim
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    Jim Henderson
    openSUSE Forums Administrator
    Forum Use Terms & Conditions at http://tinyurl.com/openSUSE-T-C

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    Default Re: Cell phone hotspot interferes with Ethernet connection.

    There probably wouldn't be any RF interference but if you don't know what you are doing or don't have visibility into the network topology and devices there are various possibilities where you could accidentally take down a device, maybe even a critical machine/device.

    Bottom line, the people you're talking to may either not want to help/grant you access to any more than you can already "see" and they don't want to risk or troubleshoot any potential problems you might cause, eg no network tech immediately available.

    TSU

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    Default Re: Cell phone hotspot interferes with Ethernet connection.

    On Mon, 18 Mar 2013 19:46:02 +0000, tsu2 wrote:

    > There probably wouldn't be any RF interference but if you don't know
    > what you are doing or don't have visibility into the network topology
    > and devices there are various possibilities where you could accidentally
    > take down a device, maybe even a critical machine/device.


    I doubt that could happen, a mifi hotspot doesn't typically hook into an
    existing network, it sets its own up, with a unique SSID set up as the
    default.

    You'd have to be trying to cause interference in order to do this - and
    think of the DoS possibilities if such were true - you could sit outside
    a company's building, fire up your hotspot and cause all kinds of
    problems with their corporate network.

    Which just doesn't generally happen without intent and an insecure setup.

    > Bottom line, the people you're talking to may either not want to
    > help/grant you access to any more than you can already "see" and they
    > don't want to risk or troubleshoot any potential problems you might
    > cause, eg no network tech immediately available.


    That's more likely the case - they don't want to support it. They need
    to be honest about that IMHO rather than give a bogus "you'll screw up
    our network if you do this" excuse.

    Jim
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    Jim Henderson
    openSUSE Forums Administrator
    Forum Use Terms & Conditions at http://tinyurl.com/openSUSE-T-C

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