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    DNS 8000+ms, troubleshooting help

    Scheduled Pinned Locked Moved General pfSense Questions
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    • S
      srytryagn @johnpoz
      last edited by

      @johnpoz Yup, I cant sort out what is going wrong, many folks have confirmed being able to run the apps without any issue.

      What do you reckon ?

      johnpozJ 1 Reply Last reply Reply Quote 0
      • stephenw10S
        stephenw10 Netgate Administrator
        last edited by stephenw10

        Seems very likely one or both 'apps' are misconfigured and flooding traffic that should never leave the host IMO.

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        • johnpozJ
          johnpoz LAYER 8 Global Moderator @srytryagn
          last edited by

          @srytryagn said in DNS 8000+ms, troubleshooting help:

          What do you reckon ?

          Can't reckon anything from those sniff.. One is just kvm traffic, and the other is an IP talking to lots of other stuff, but nothing that is insane amount of traffic.. no errors seen, no retrans seen that are anything of any significance.. Don't even see any other traffic, no broakcast, no flood of multicast, Then again is 1.4 seconds worth of data.. So wouldn't expect to see anything - unless there was some sort of flood of traffic..

          Maybe a longer sniff - while your trying to do stuff that says failing.

          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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          • S
            srytryagn @johnpoz
            last edited by srytryagn

            @johnpoz Sure will run a longer sniff and will try to connect to some websites that will fail.

            Any point in sniffing the Wan side or anything else while I am working on this ?

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            • johnpozJ
              johnpoz LAYER 8 Global Moderator @srytryagn
              last edited by johnpoz

              @srytryagn not really - you say your devices when turned on are what cause the problem.. So unless when your devices phone home they are doing a volumetric ddosing attack against your wan? The traffic has to go through your lan to get anywhere.

              Guess that is a possibility, and if all the traffic was just dropped it wouldn't show really on pfsense as anything.. But your internet could become crazy slow..

              I guess if your connecting to some sort of swarm or something - and you get bombed from 100s or thousands of devices trying to talk to your wan? And they are bombing you with large UDP packets or something?

              Couldn't hurt to see normal taffic flow on your wan, and then sniff after you turn on your stuff and you say stuff fails/slow, etc.

              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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              • stephenw10S
                stephenw10 Netgate Administrator
                last edited by

                If that is the case then DNS and/or ping response from pfSense itself to something external would also be affected. I think we asked about that but I may have missed the reply.

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                • S
                  srytryagn @johnpoz
                  last edited by

                  This post is deleted!
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                  • S
                    srytryagn @johnpoz
                    last edited by srytryagn

                    @johnpoz pcap enclosed w/ couple of attemtps at reaching out to websites (they all failed). extralongpcap_anon.zip

                    Please let me know what mapping IPs/descriptions are helpful to know if at all.

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                    • S
                      srytryagn @stephenw10
                      last edited by

                      @stephenw10 Can I ping from the console in web gui to test that ?

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                      • stephenw10S
                        stephenw10 Netgate Administrator
                        last edited by

                        In the gui use Diag > Ping or Diag > DNS Lookup.

                        But better to test from the CLI via SSH if you can.

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                        • johnpozJ
                          johnpoz LAYER 8 Global Moderator @srytryagn
                          last edited by

                          @srytryagn you can also dump the data from the file.. Just really need the headers and such.. but just to split it up to post if you have no where else to host it.. splitcap comes to mind.. https://www.netresec.com/?page=SplitCap

                          You should also be able to just zip it and split it up that way, 7z can do that really easy.. There is also a truncate option in that wrangler, which can cut out the data of large packets, we just really need to see the headers.

                          I just did a quick pcap of wan traffic and fired off a speedtest to make sure it was big.. 226MB, after truncated it down to 18MB.. so something like that could maybe shrink your 7MB file down to size to be able to upload.

                          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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                          • S
                            srytryagn @johnpoz
                            last edited by

                            @johnpoz I deleted post asking about split, it shrunk in wrangler and I posted it above.

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                            • johnpozJ
                              johnpoz LAYER 8 Global Moderator @srytryagn
                              last edited by johnpoz

                              @srytryagn ok what is this? 192.168.226.58 trying to talk to stuff and getting told that port is not reachable, etc.

                              2024-01-18_150637.jpg

                              Where exactly did you sniff this - on the lan interface where your bad guys are? On pfsense.

                              So for example in this session.. I see that a syn,ack was sent to

                              badf.jpg

                              that 226.58 then you gavve what looks like answers back, but then see that seq=29.. that makes no sense they should be in order.. And clearly that 43.x guy never got answer because he is retrans his syn,ack..

                              Where exactly was this sniff taken? On pfsense interface?

                              edit: what exactly are you trying to run - is this something I could try and duplicate?

                              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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                              • S
                                srytryagn @johnpoz
                                last edited by srytryagn

                                @johnpoz
                                Yes on PC on network 2 running both Apps.
                                Pcap is taken from within pfsense webgui (pointed to problematic Lan).
                                ICMP is me pining google.com from that same pc.

                                I really appreciate your willingness to run it on your end and would happily walk you though how to do that. You will need a wallet address (or donation address), and a partition NVME or SSD with about 200Gb free to run the node and farmer.

                                How do want to proceed ?

                                johnpozJ 1 Reply Last reply Reply Quote 0
                                • johnpozJ
                                  johnpoz LAYER 8 Global Moderator @srytryagn
                                  last edited by johnpoz

                                  @srytryagn have like 600GB free on my nmve drive, and like 850GB on my 1TB scratch SSD..

                                  What coin is this? Prob not run it long enough to do anything of worth.. But could I just donate to your wallet?

                                  Do you have a link to setup/guide - I am really curious on what the connection is suppose to do actually, etc. And also see if it takes down my network ;)

                                  On a side note - do you have checksums and offloading enabled?

                                  offload.jpg

                                  Under advanced networking, what specific nics do you have? Are they realtek?

                                  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

                                  S 2 Replies Last reply Reply Quote 0
                                  • S
                                    srytryagn @johnpoz
                                    last edited by

                                    @johnpoz Will keep this thread to pfsense/networking information for others. Will share info DM.

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                                    • S
                                      srytryagn @johnpoz
                                      last edited by

                                      @johnpoz opened dm/room with you, please check.

                                      johnpozJ 1 Reply Last reply Reply Quote 0
                                      • johnpozJ
                                        johnpoz LAYER 8 Global Moderator @srytryagn
                                        last edited by

                                        @srytryagn saw your chat - so what about these settings for your offloading?

                                        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

                                        S 1 Reply Last reply Reply Quote 0
                                        • S
                                          srytryagn @johnpoz
                                          last edited by

                                          @johnpoz Which ones need to be enabled in pfgui?
                                          {Running intel quad port NIC, well capable for offload. }

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                                          • johnpozJ
                                            johnpoz LAYER 8 Global Moderator @srytryagn
                                            last edited by johnpoz

                                            @srytryagn I would still try disabling them.. Its not going to make it worse.. There have been known issues with offloading. Do what I have set in my picture.

                                            You will need to reboot pfsense.. if I find some time tmrw will go through the setup, if not will try over the weekend.. But there is a lot of football on this weekend ;)

                                            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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