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Serve different types of .efi boot files

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  • G
    george1421 Moderator @dureal99d
    last edited by george1421 Oct 12, 2016, 11:41 AM Oct 12, 2016, 5:40 PM

    @dureal99d nuts, can you try another?

    You can capture this with wireshark on a computer and not have to go the tcpdump route and then copy the file, etc. Any computer on the same subnet as the booting computer can detect these broadcast messages if you are running wireshark.

    Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

    D 2 Replies Last reply Oct 12, 2016, 5:41 PM Reply Quote 0
    • D
      dureal99d @george1421
      last edited by Oct 12, 2016, 5:41 PM

      @george1421 said in Serve different types of .efi boot files:

      can capture this with wireshark on a computer

      sure

      1 Reply Last reply Reply Quote 0
      • D
        dureal99d @george1421
        last edited by Oct 12, 2016, 5:54 PM

        @george1421 wire shark capture. here ip address 192.168.1.121

        D 1 Reply Last reply Oct 12, 2016, 5:57 PM Reply Quote 0
        • D
          dureal99d @dureal99d
          last edited by Oct 12, 2016, 5:57 PM

          @george1421 tcdump here of another machine Asus R503U

          G 2 Replies Last reply Oct 12, 2016, 6:03 PM Reply Quote 0
          • G
            george1421 Moderator @dureal99d
            last edited by Oct 12, 2016, 6:03 PM

            @dureal99d well on the first one I didn’t see any systems that transmitted their uuid in dhcp option 97. That sux a bit.

            You might also want to learn about capture filters in wireshark. They are similar to the capture filters for tcpdump.

            ‘udp.port == 67 or udp.port == 68 or udp.port == 69 or udp.port == 4011’ this one is equiv to the tcpdump one we were using. Let me look at the ASUS computer.

            Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

            D 1 Reply Last reply Oct 12, 2016, 6:07 PM Reply Quote 0
            • D
              dureal99d @george1421
              last edited by Oct 12, 2016, 6:07 PM

              @george1421 said in Serve different types of .efi boot files:

              might also want to learn about capture filters in wireshark

              for asus 00000011-0000-0000-0000-50465d986f3c / udp.port == 68

              G 1 Reply Last reply Oct 12, 2016, 6:08 PM Reply Quote 1
              • G
                george1421 Moderator @dureal99d
                last edited by Oct 12, 2016, 6:08 PM

                @dureal99d The asus one has something we can work with. That dhcp option 97 is ‘00000011-0000-0000-0000-50465d986f3c’

                I can tell you if you boot this computer in bios mode (just for this test) you will probably see this listed on the initial pxe boot screen as GUID.

                This number should also be visible in the /var/log/syslog or where ever dnsmasq is writing its log. In my testing the value from wireshark did not match up exactly with what was found in the dnsmasq log. You need the value that looks similar from the dnsmasq log. But with that information we can take the next step to create a match test.

                Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

                D 1 Reply Last reply Oct 12, 2016, 6:09 PM Reply Quote 0
                • G
                  george1421 Moderator @dureal99d
                  last edited by Oct 12, 2016, 6:08 PM

                  @dureal99d said in Serve different types of .efi boot files:

                  @george1421 said in Serve different types of .efi boot files:

                  might also want to learn about capture filters in wireshark

                  for asus 00000011-0000-0000-0000-50465d986f3c / udp.port == 68

                  Bonus points for you!!

                  Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

                  1 Reply Last reply Reply Quote 1
                  • D
                    dureal99d @george1421
                    last edited by Oct 12, 2016, 6:09 PM

                    @george1421 said in Serve different types of .efi boot files:

                    You need the value that looks

                    ok

                    G 1 Reply Last reply Oct 12, 2016, 6:10 PM Reply Quote 0
                    • G
                      george1421 Moderator @dureal99d
                      last edited by Oct 12, 2016, 6:10 PM

                      @dureal99d Which computer needs the special kernel the ASUS or Lenovo?

                      Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

                      D 1 Reply Last reply Oct 12, 2016, 6:11 PM Reply Quote 0
                      • D
                        dureal99d @george1421
                        last edited by dureal99d Oct 12, 2016, 12:12 PM Oct 12, 2016, 6:11 PM

                        @george1421 they both like that intel1756.efi kernel

                        G 1 Reply Last reply Oct 12, 2016, 6:12 PM Reply Quote 0
                        • G
                          george1421 Moderator @dureal99d
                          last edited by Oct 12, 2016, 6:12 PM

                          @dureal99d Like it enough to make that your default kernel and then the ones that don’t like it you make exceptions for? Use the 80/20 rule what do you have the most of on your campus and then make that your default kernel and the others be the exception.

                          Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

                          D 2 Replies Last reply Oct 12, 2016, 6:14 PM Reply Quote 0
                          • D
                            dureal99d @george1421
                            last edited by dureal99d Oct 12, 2016, 12:32 PM Oct 12, 2016, 6:14 PM

                            @george1421 I have a lot of mixed clients, a good amount don’t mind the standard ipxe.efi. some are just a bit more diva like these 2

                            1 Reply Last reply Reply Quote 0
                            • D
                              dureal99d @george1421
                              last edited by Oct 12, 2016, 6:18 PM

                              @george1421 this is what i see 00:11:00:00:00:00:00:00:00:00:00:50:46:5d...

                              D G 2 Replies Last reply Oct 12, 2016, 6:20 PM Reply Quote 0
                              • D
                                dureal99d @dureal99d
                                last edited by Oct 12, 2016, 6:20 PM

                                @george1421 the entire readout

                                Oct 12 12:59:32 dureal99d-Precision-WorkStation-T5400 dnsmasq-dhcp[1280]: 3272245650 available DHCP subnet: 192.168.1.109/255.255.255.0
                                Oct 12 12:59:32 dureal99d-Precision-WorkStation-T5400 dnsmasq-dhcp[1280]: 3272245650 vendor class: PXEClient:Arch:00007:UNDI:003016
                                Oct 12 12:59:32 dureal99d-Precision-WorkStation-T5400 dnsmasq-dhcp[1280]: 3272245650 PXE(enp8s0) 50:46:5d:98:6f:3c proxy
                                Oct 12 12:59:32 dureal99d-Precision-WorkStation-T5400 dnsmasq-dhcp[1280]: 3272245650 tags: BC_UEFI, enp8s0
                                Oct 12 12:59:32 dureal99d-Precision-WorkStation-T5400 dnsmasq-dhcp[1280]: 3272245650 next server: 192.168.1.109
                                Oct 12 12:59:32 dureal99d-Precision-WorkStation-T5400 dnsmasq-dhcp[1280]: 3272245650 broadcast response
                                Oct 12 12:59:32 dureal99d-Precision-WorkStation-T5400 dnsmasq-dhcp[1280]: 3272245650 sent size:  1 option: 53 message-type  2
                                Oct 12 12:59:32 dureal99d-Precision-WorkStation-T5400 dnsmasq-dhcp[1280]: 3272245650 sent size:  4 option: 54 server-identifier  192.168.1.109
                                Oct 12 12:59:32 dureal99d-Precision-WorkStation-T5400 dnsmasq-dhcp[1280]: 3272245650 sent size:  9 option: 60 vendor-class  50:58:45:43:6c:69:65:6e:74
                                Oct 12 12:59:32 dureal99d-Precision-WorkStation-T5400 dnsmasq-dhcp[1280]: 3272245650 sent size: 17 option: 97 client-machine-id  00:11:00:00:00:00:00:00:00:00:00:50:46:5d...```
                                T 1 Reply Last reply Oct 12, 2016, 6:24 PM Reply Quote 0
                                • T
                                  Tom Elliott @dureal99d
                                  last edited by Oct 12, 2016, 6:24 PM

                                  @dureal99d said in Serve different types of .efi boot files:

                                  Oct 12 12:59:32 dureal99d-Precision-WorkStation-T5400 dnsmasq-dhcp[1280]: 3272245650 vendor class: PXEClient:Arch:00007:UNDI:003016

                                  That is what I see:

                                  Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG! Get in contact with me (chat bubble in the top right corner) if you want to join in.

                                  Web GUI issue? Please check apache error (debian/ubuntu: /var/log/apache2/error.log, centos/fedora/rhel: /var/log/httpd/error_log) and php-fpm log (/var/log/php*-fpm.log)

                                  Please support FOG if you like it: https://wiki.fogproject.org/wiki/index.php/Support_FOG

                                  G 1 Reply Last reply Oct 12, 2016, 8:00 PM Reply Quote 0
                                  • G
                                    george1421 Moderator @dureal99d
                                    last edited by george1421 Oct 12, 2016, 12:28 PM Oct 12, 2016, 6:26 PM

                                    @dureal99d Ok that is a bit what I saw when I was working on the tutorial at home. There has to be an easier way, I just haven’t learned it yet.

                                    But here is what I did, I mashed the two values together.

                                    # From wireshark.
                                    00000011-0000-0000-0000-50465d986f3c
                                    # Translated into 2 nibble hex numbers
                                    00:00:00:11:00:00:00:00:00:00:50:46:5d:98:6f:3c
                                    
                                    # From dnsmasq log
                                    00:11:00:00:00:00:00:00:00:00:00:50:46:5d...
                                    
                                    #Side by side aligned
                                       00:00:00:11:00:00:00:00:00:00:50:46:5d:98:6f:3c
                                    00:11:00:00:00:00:00:00:00:00:00:50:46:5d...
                                    
                                    #Missing bits filled into the dnsmasq one
                                    00:11:00:00:00:00:00:00:00:00:00:50:46:5d:98:6f:3c
                                    

                                    End results to create the unique uuid for this asus computer. 00:11:00:00:00:00:00:00:00:00:00:50:46:5d:98:6f:3c

                                    So now we need to make one of those magical dnsmasq filters that will identify this computer for us.

                                    Edit (duh, I just realized that the 50:46:5d:98:6f:3c of that uuid is the mac address of that computer. That won’t do for us exactly. but we are close)

                                    Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

                                    D 1 Reply Last reply Oct 12, 2016, 6:28 PM Reply Quote 1
                                    • D
                                      dureal99d @george1421
                                      last edited by Oct 12, 2016, 6:28 PM

                                      @george1421 I see

                                      G 1 Reply Last reply Oct 12, 2016, 6:34 PM Reply Quote 0
                                      • G
                                        george1421 Moderator @dureal99d
                                        last edited by Oct 12, 2016, 6:34 PM

                                        @dureal99d This one may be harder than with the Dell computers I’ve tested on. The uuid is actually made up of two parts the IAID which should indicate the model and DUID which should should be device specific. In this case the model identifier is ‘00:11:00:00:00:00:00:00:00’ We can filter on that, but it doesn’t look too unique.

                                        Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

                                        1 Reply Last reply Reply Quote 0
                                        • G
                                          george1421 Moderator @Tom Elliott
                                          last edited by Oct 12, 2016, 8:00 PM

                                          @Tom-Elliott said in Serve different types of .efi boot files:

                                          Oct 12 12:59:32 dureal99d-Precision-WorkStation-T5400 dnsmasq-dhcp[1280]: 3272245650 vendor class: PXEClient:Arch:00007:UNDI:003016

                                          That is what I see:

                                          Not ignoring you on this. The vendor class (option 60) doesn’t have anything that is unique to describe this machine. While the arch does tell you if it is a uefi or bios machine that is all that can be gleaned from that option. The UNDI part is only what version of UNDI the client supports. The Dell 6230 I had also had a undi value of 003 016 and that one used ipxe.efi or snp.efi for a uefi boot.

                                          The UUID (option 97) is suppose to be unique on a model (first half of uuid) and device (second half of uuid). on a per machine basis. My hope is that we can use the uuid for this. The only other thing that is unique in the dhcp request is the mac address, but then you will need a match filter for every mac address you want a unique iPXE boot kernel for. That (IMO) is not very sustainable if you have more than about 20 devices on your campus.

                                          Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

                                          D W 2 Replies Last reply Oct 12, 2016, 8:04 PM Reply Quote 0
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