Getting MAC & NetBIOS from PHP?

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  • Snuffy2
    #1

    Getting MAC & NetBIOS from PHP?

    I'm looking to try to get a users MAC and/or NetBIOS name when they visit
    my website. It somehow can be done, I'm not sure with PHP, but it can be
    done.

    Does anyone have any idea how?

    As an example check out:
    http://stealthtests.lockdowncorp.com/


    On that site, there are tests that will display NetBIOS & MAC addresses.
    (NOTE: if you are properly firewalled or protected it won't display the
    information accurately, however if unprotected and not behind a NAT or
    router, it works)

    Now how did they do this? & how can I?

    Thanx


    Tags: None
    • Gordon Burditt
      #2
      Re: Getting MAC & NetBIOS from PHP?

      > I'm looking to try to get a users MAC and/or NetBIOS name when they visit[color=blue]
      >my website. It somehow can be done, I'm not sure with PHP, but it can be
      >done.
      >
      >Does anyone have any idea how?[/color]

      A MAC address in its normal use as an Ethernet address is not
      transmitted beyond your local router (but it does pass through
      switches and hubs) on an Ethernet connection. Computers connected
      by dialup modems may not even HAVE a MAC address. Computers connected
      by DSL or cable modem probably pass the MAC address to the first
      router on the ISP's end, and no further. Looking at the MAC addresses
      coming in to your website will reveal most of them to be the MAC
      address of your router, unless you've got a LAN, in which case some
      will show up as addresses of local computers on the LAN.

      I suspect that NetBIOS may use the MAC address inside the packets
      as part of its protocol, and that's how this site gets it. Either
      that, or Windows has a MAC-address-query port along with the
      credit-card-query port for use by the RIAA to bill you for music.
      [color=blue]
      >As an example check out:
      >http://stealthtests.lockdowncorp.com/
      >
      >On that site, there are tests that will display NetBIOS & MAC addresses.
      >(NOTE: if you are properly firewalled or protected it won't display the
      >information accurately, however if unprotected and not behind a NAT or
      >router, it works)[/color]

      It didn't display mine. My systems are on the Internet with public
      static IPs and forward and reverse DNS (and the site found correct
      IP addresses and DNS, as expected). No NAT. No proxy. The firewall
      didn't block anything during this test. But I'm not running Microsoft
      software.

      It can't display my NetBIOS name because there isn't one.

      Gordon L. Burditt

        Comment

        • Snuffy2
          #3
          Re: Getting MAC & NetBIOS from PHP?

          The arp -a command as far as I can tell will only detect other computers
          within the same LAN as stated in an email I received. That's helpful, but
          there seems to be a way using NetBIOS to get the MAC address.

          The website listed in my original post:
          http://stealthtests.lockdowncorp.com/


          It can get the NetBIOS name and the MAC address of (what appears to be) any
          Windows machine directly connected to the internet (no router or firewall
          [software or hardware]). Once I unprotected my system, it got my MAC address
          and NetBIOS name and it is not on my LAN!

          If you have an unprotected Win PC or you can easily (temporarily) unprotect
          your PC, try the website.

          Does anyone know how they do it?

          Thanx


          "Gordon Burditt" <gordonb.9npu0@ sneaky.lerctr.o rg> wrote in message
          news:blst91$a7p @library2.airne ws.net...[color=blue]
          > I'm looking to try to get a users MAC and/or NetBIOS name when they visit
          >my website. It somehow can be done, I'm not sure with PHP, but it can be
          >done.
          >
          >Does anyone have any idea how?[/color]

          A MAC address in its normal use as an Ethernet address is not
          transmitted beyond your local router (but it does pass through
          switches and hubs) on an Ethernet connection. Computers connected
          by dialup modems may not even HAVE a MAC address. Computers connected
          by DSL or cable modem probably pass the MAC address to the first
          router on the ISP's end, and no further. Looking at the MAC addresses
          coming in to your website will reveal most of them to be the MAC
          address of your router, unless you've got a LAN, in which case some
          will show up as addresses of local computers on the LAN.

          I suspect that NetBIOS may use the MAC address inside the packets
          as part of its protocol, and that's how this site gets it. Either
          that, or Windows has a MAC-address-query port along with the
          credit-card-query port for use by the RIAA to bill you for music.
          [color=blue]
          >As an example check out:
          >http://stealthtests.lockdowncorp.com/
          >
          >On that site, there are tests that will display NetBIOS & MAC addresses.
          >(NOTE: if you are properly firewalled or protected it won't display the
          >information accurately, however if unprotected and not behind a NAT or
          >router, it works)[/color]

          It didn't display mine. My systems are on the Internet with public
          static IPs and forward and reverse DNS (and the site found correct
          IP addresses and DNS, as expected). No NAT. No proxy. The firewall
          didn't block anything during this test. But I'm not running Microsoft
          software.

          It can't display my NetBIOS name because there isn't one.

          Gordon L. Burditt


            Comment

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