WiFi guest control

Discussion in 'Tomato Firmware' started by konzen.k, Aug 20, 2013.

  1. konzen.k

    konzen.k Reformed Router Member

    I want to offer free WiFi for my clients (open, no password), but do not want the neighbors have access. How is a closed place, signal level of the device is a good indication whether it is within or out of place. Need to block devices with signal below a value or above a certain distance.
    Last edited: Aug 20, 2013
  2. Cyberian75

    Cyberian75 Network Guru Member

    AFAIK, there are no "software" that can do what you're trying to do.
    koitsu likes this.
  3. konzen.k

    konzen.k Reformed Router Member

    I am willing to develop this functionality, I know that the tomato has the information of devices and has the ability to lock a device. just do not know how to access these features.
  4. Malitiacurt

    Malitiacurt Networkin' Nut Member

    Might be cheaper/easier to write down the MAC's that connect during the night and ban those.

    Not effective but neither is measuring wifi signal strength, since objects blocking/degrading the signal can easily screw up your banning of legit clients.

    You can't measure distance unless you measure wireless signal time received vs transmit like radar, but that requires driver level access which you don't get as broadcom just gives the blobs.
  5. PetervdM

    PetervdM Network Guru Member

    i know broadcom based dd-wrt has a setting in wireless -> advanced to set the max distance of a client. it defaults to 2000 meters but can be set as low as 1 meter. i think it controls the hold-off time off the tx/rx radio switch.
    i never tested it, but you could give it a try.
  6. Elfew

    Elfew Network Guru Member

    useles feature... and I dont recommend you to use this, because every device has different antennas, chipset and the signal is changing all the time... (with my external usb wifi adapter I have 300/300Mbit connection and 5bars (-45dbi) but with internal wifi card from notebook I have only 2bars and -79dbi

    So everybody can connect to you site with adapter :)))
  7. konzen.k

    konzen.k Reformed Router Member

    Good point, I did some tests and the result was not expected, but according to the documentation this parameter is the same for this. I will investigate further.
  8. konzen.k

    konzen.k Reformed Router Member

    Broadcom does not work...
  9. Cyberian75

    Cyberian75 Network Guru Member

    Like Elfew said, every device have different signal strengths, so this "feature" would be useless and waste of efforts. Besides, I heard that N66U can connect to devices 2 blocks away!
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