1. Joined : Jul 2015
    Posts : 1
    Windows 10 Build 10240
       20 Jul 2015 #1

    Unknown computers detected on my network

    So i have a Tp-Link mr3420 running dd-wrt. On my windows 10 machine in the network tab i can see computers that are not mine, hovever on my router in the dhcp table i cannot see any other computers than my owns. On my linux machine i do not see the unknown computers that windows detects. And they only appear at certain times. I have not joined any homegroup. So why do i see these computers ? there are 2 computers that are not mine and i cannot find anything on the internet about this.

    Please help me

      My System SpecsSystem Spec

  2. Joined : Apr 2014
    Space coast of Florida
    Posts : 4,317
    Windows 10 Pro X64 14393.576
       20 Jul 2015 #2

    Any SSID that is detected will be displayed in the list of available wireless access points available to you.
    No idea why you don't see them in Linux as well. should be the same.

    The router DHCP table will only show entries for devices it provided IPs for.

    My laptop shows 8 at the moment, two of which are mine.
      My System SpecsSystem Spec

  3. Joined : Oct 2014
    Posts : 839
    Windows 8.1, Win10Pro
       21 Jul 2015 #3

    If you are talking about a Home network, one for which you have enabled Wireless access, a good Windows app to keep check on this is Who's on my WiFi. That allows you to scan for all devices on the network, will show you the Mac address of each device -- and, what's really good -- will allow you to remove and prevent access by specific device. If these are machine accessing your network, this is a good way to get rid of them.

    There may be free alternatives to this, app, I haven't checked.
      My System SpecsSystem Spec

  4. Joined : May 2015
    Central IL
    Posts : 3,059
    EL Capitan
       23 Jul 2015 #4

    I am going to go out on a limb and say that they are most likely UPnP DLNA devices (ie Blu-Ray player, Xbox, Streaming device). Anything connected to the network that is not necessarily a computer is an intruder. People forget that their devices that they can view Netflix, etc. on, will show up in the Windows devices, but in order to show on the Linux devices, you have to have installed DLNA & UPnP software.
      My System SpecsSystem Spec


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