wireless clients can't see local network

Discussion in 'Misc' started by Art Werschulz, Nov 22, 2011.

  1. Hi.

    Our network configuration consists of a cable modem and a wireless
    router with several ethernet ports. An iMac, a Time Capsule, and a
    printer are connected via the ethernet ports. Several MacBooks are
    connected via WiFi.

    All the Macs can see the Internet. The (hardwired) iMac can see the
    local network. However, the MacBooks cannot see the local network at
    all. Rebooting the MacBooks was of no avail.

    Any thoughts about why this might be so? How would one fix this?

    Thanks.
     
    Art Werschulz, Nov 22, 2011
    #1
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  2. Since you did not say the model of wirless router, all we can do is guess.

    Some routers have the option of preventing the wireless users from seeing
    the wired ones. Make sure it is not turned on. You'll probably have to
    look at the manual for the router.

    In case anyone wonders why you would want it, it would be useful in a place
    where the wired computers share the internet connection with visitors who
    use wifi. For example, in a small business where the office computers are
    wired and the wifi is for customers.

    You would not want a customer to be able to sit in the waiting room, or
    at a table and hack into your cash register.

    Geoff.
     
    Geoffrey S. Mendelson, Nov 22, 2011
    #2
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  3. Considering that the Time Capsule is a Wireless router with four ethernet
    ports, why do you have another wireless router in the chain? How about
    getting rid of that router, and connect the TC directly to the cable modem?
     
    Michelle Steiner, Nov 22, 2011
    #3
  4. Some WiFi access points have a setting to disable LAN access from
    wireless.

    You don't state how you've wired this up. If the cable modem is
    performing DHCP and NAT you should set the WiFi to bridged mode. Two
    layers of NAT will give you two layers of local networks that can't talk
    to each other properly (one-way at best). Bridged mode causes it to
    pass traffic as-is, like a wire would.
     
    Kevin McMurtrie, Nov 22, 2011
    #4
  5. That's the configuration I have at home, and it works. The knot is in
    the router, I think. Do you use automatic DHCP? Are the numbers of the
    wired and the wireless in the same zone? (wildguessing...)

    _x.
     
    Xavier Llobet, Nov 22, 2011
    #5
  6. Art Werschulz

    nospam Guest

    you don't give any details on what equipment it is, but the first thing
    to test it without any encryption, then reenable it.
     
    nospam, Nov 22, 2011
    #6
  7. Art Werschulz

    nospam Guest

    one major reason is that other wireless routers can do quite a bit more
    than the one in a time capsule.
    what if it's a combo cable modem/wifi router?
     
    nospam, Nov 22, 2011
    #7
  8. Some routers have a "guest network" feature. This allows you to
    configure two wireless networks -- one allows access to both the
    Internet and the wired LAN, the other is for guests and only allows
    access to the Internet (so they can't access your file server, for
    example).

    It sounds to me like your MacBooks are connecting to the guest network
    instead of the regular wireless network.
     
    Barry Margolin, Nov 22, 2011
    #8
  9. My guess (though you don't give even the model of your router so it is
    completely a guess):

    Your router has a feature that prevents wireless clients from accessing
    anything but the gateway, for security reasons. You can probably turn
    this feature off in the router's configuration (the feature might be
    called "isolation" or some such).

    Alternatively, the router uses a different network for wireless and
    wired clients. For example, the box might have a completely separate
    router for the wireless clients, which uses NAT and appears as a single
    IP address to the wired side. In that case it can probably be
    configured in "bridge mode" which would allow the wireless network to
    be a part of the wired network.

    In short, the issue is almost certainly at the router and not in the
    computers connecting to it.
     
    Jerry Kindall, Nov 23, 2011
    #9
  10. Hi again.

    I idiotically forgot to mention one crucial point: Up until a couple of
    days ago, the MacBook Pro *could* see the local network.

    Just for fun, I rebooted the router. That did the trick. I should've
    done this originally. Sigh.

    Sorry for the inconvenience.
     
    Art Werschulz, Nov 23, 2011
    #10
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