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Double registration? What can you make of this ?

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  • Double registration? What can you make of this ?

    I need some help here guys.
    I have a competition running at my board, and only registered users can take part.
    I don't allow double-registrations with the same email at my VB settings.

    If you look at the 3 attachments/screenies you will see that there are two users (might show as 3 for the time one of them was a guest), with the same IP.

    If you look carefully at the screenies, it is obvious that those 2 users with the same IP are on the board at the same time !

    As you understand I come to think that it's the same user, and he re-registered so that he could participate at the competition twice, to have more chances to win. (probably by having 2 different browsers/windows open, one with each account.. ?)

    Is there any chance that I'm wrong? I mean, how could 2 different uses share the same IP at the very same time?

    any feedback would be appreciated
    Attached Files

  • #2
    Two different users behind a router eg a company or a college could both be displaying the same ip.
    Sig? What sig?

    Comment


    • #3
      Originally posted by DarkDelight.net
      Two different users behind a router eg a company or a college could both be displaying the same ip.
      even the same last octet ?

      194.30.220.167

      I'm asking cause this is a Class C IP so the last octet is the host one.

      Comment


      • #4
        Originally posted by stark427
        even the same last octet ?

        194.30.220.167
        Yep, it's the router's IP.

        Comment


        • #5
          Originally posted by N9ne
          Yep, it's the router's IP.
          Ah ok, so the router here is considered as the host and not a ..workstation, right?

          Comment


          • #6
            Originally posted by stark427
            even the same last octet ?

            194.30.220.167
            Yes.

            With NAT (Network Address Translation), all machines behind the router share a single ip.
            Sig? What sig?

            Comment


            • #7
              Originally posted by stark427
              Ah ok, so the router here is considered as the host and not a ..workstation, right?
              The router is the gateway.
              Sig? What sig?

              Comment


              • #8
                Ok thank you all.

                I guess I'll have to find an alternative way to find out whether that incident is innocent... or not

                Comment


                • #9
                  Originally posted by stark427
                  Ok thank you all.

                  I guess I'll have to find an alternative way to find out whether that incident is innocent... or not
                  See if the emial addresses have the same domain.
                  Watch them to see if one is always online at the same time as the other.
                  If you are using vB2x, compare their password hashes.
                  Sig? What sig?

                  Comment


                  • #10
                    It could also be the same user viewing the site using different browsers...
                    OPEN TECH SUPPORT
                    "Tech is our middle name!"

                    Comment


                    • #11
                      Originally posted by DarkDelight.net
                      See if the emial addresses have the same domain.
                      Watch them to see if one is always online at the same time as the other.
                      If you are using vB2x, compare their password hashes.
                      - both emails are from hotmail
                      - if you see at the screenies, it is obvious that both of them where online (at the same time) for about 20 minutes.
                      Once one of them disappeared from the Online panel, the other viewed another thread for a while and left, too.

                      - Urm, how exactly do I compare their password hashes ?

                      thanx again

                      Comment


                      • #12
                        Originally posted by Tolitz
                        It could also be the same user viewing the site using different browsers...
                        exactly my thought

                        Comment


                        • #13
                          Originally posted by Tolitz
                          It could also be the same user viewing the site using different browsers...
                          Look at the attachments.
                          There are two different registered users with the ip.
                          It could be one person with two browsers open but that would mean he is cheating by registering twice, which is what Stark wants to know.
                          Sig? What sig?

                          Comment


                          • #14
                            Originally posted by stark427
                            - both emails are from hotmail
                            - Urm, how exactly do I compare their password hashes ?

                            thanx again
                            Only if you are using vB2x, go into the database user table and find the entries for the two uses.
                            and see if the entries in the password column are the same.
                            Sig? What sig?

                            Comment


                            • #15
                              Originally posted by DarkDelight.net
                              Look at the attachments.
                              There are two different registered users with the ip.
                              It could be one person with two browsers open but that would mean he is cheating by registering twice, which is what Stark wants to know.
                              Yeah, my initial thought was that the user opened my forum on a different browser and re-registered a new account...

                              Comment

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