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    SG-1100 WAN MAC Spoofing Guide?

    Scheduled Pinned Locked Moved Official Netgate® Hardware
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    • J
      johnny21
      last edited by stephenw10

      Hello!

      Is there a step by step guide that describes what steps are needed to perform MAC spoofing on the WAN interface of an SG1100? I have looked at a couple related articles but none of them seem to provide complete directions? Any help is appreciated, thanks!

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      • S
        SamKook
        last edited by SamKook

        Not sure if there's anything different with the SG1100 but all I do to spoof the WAN MAC on my pfsense install, is go to Interfaces->WAN and enter the MAC I want to use in the MAC Address field.

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        • J
          johnny21
          last edited by johnny21

          I was looking at that and it is a a field I cannot click/modify. I get the following message from that screen:

          The MAC address of a VLAN interface must be set on its parent interface

          Edit: I can't click/edit this red box
          Screen Shot 2019-12-01 at 3.32.28 PM.png

          J 1 Reply Last reply Reply Quote 0
          • J
            johnny21 @johnny21
            last edited by

            I think these are the relevant system settings but not sure where to actually modify the MAC address setting for the parent:

            Screen Shot 2019-12-01 at 3.27.56 PM.png

            Screen Shot 2019-12-01 at 3.28.26 PM.png

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            • johnpozJ
              johnpoz LAYER 8 Global Moderator
              last edited by

              You have to set the mac on the actual physical interface.. Not a vlan interface.

              An intelligent man is sometimes forced to be drunk to spend time with his fools
              If you get confused: Listen to the Music Play
              Please don't Chat/PM me for help, unless mod related
              SG-4860 24.11 | Lab VMs 2.8, 24.11

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              • R
                Rai80
                last edited by

                Or from command line: ifconfig mvneta0.4090 ether xx:xx:xx:xx:xx:xx

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                • johnpozJ
                  johnpoz LAYER 8 Global Moderator
                  last edited by

                  that is not going to stick..

                  An intelligent man is sometimes forced to be drunk to spend time with his fools
                  If you get confused: Listen to the Music Play
                  Please don't Chat/PM me for help, unless mod related
                  SG-4860 24.11 | Lab VMs 2.8, 24.11

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                  • R
                    Rai80
                    last edited by

                    @johnpoz True.

                    To make it 'stick' You can put this it in /etc/inc/interfaces.inc:

                    mwexec("/sbin/ifconfig mvneta0.4090 ether xx:xx:xx:xx:xx:xx");

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                    • J
                      johnny21 @johnpoz
                      last edited by

                      @johnpoz Thanks! Any guidance on where I can set the physical interface from within the web interface?

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                      • DerelictD
                        Derelict LAYER 8 Netgate
                        last edited by

                        Interfaces > Assignments

                        Add an interface for mvneta0

                        Edit the interface, enable it, spoof the MAC address, but do not number it. Leave IPv4 and IPv6 set to None.

                        Chattanooga, Tennessee, USA
                        A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                        DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                        Do Not Chat For Help! NO_WAN_EGRESS(TM)

                        V 1 Reply Last reply Reply Quote 2
                        • V
                          verket @Derelict
                          last edited by

                          @Derelict This is correct but a bit terse for a newbie like me.

                          On the SG-1100, the physical interface will show up as an available network port. When you add it, you can name it something like MACspoof and then put in the MAC address you want. Note that on the 1100, the MAC address will be presented on every port so you won't be able to use the old hardware with that MAC address on the same network segment.

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                          • DerelictD
                            Derelict LAYER 8 Netgate
                            last edited by

                            The real answer is to call your ISP and have them do whatever they have to do to let you use use the hardware MAC address without spoofing.

                            Chattanooga, Tennessee, USA
                            A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                            DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                            Do Not Chat For Help! NO_WAN_EGRESS(TM)

                            V 1 Reply Last reply Reply Quote 0
                            • V
                              verket @Derelict
                              last edited by

                              @Derelict Now there's wisdom -- would have saved me a lot of time even if the ISP support queues are long, etc.

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