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    pfSense mangling packets?

    Scheduled Pinned Locked Moved General pfSense Questions
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    • johnpozJ
      johnpoz LAYER 8 Global Moderator @Tueem
      last edited by johnpoz

      @Tueem here he is sending you a reset.. Which is not hey I am done with this conversation (fin).. He is saying GO AWAY I am done talking to you, I don't care if you still want to continue the conversation or not.

      reset.jpg

      An intelligent man is sometimes forced to be drunk to spend time with his fools
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      • T
        Tueem @Tueem
        last edited by

        @Tueem I've attached the traffic of a successfull authentication. I acquired this by routing the server through my usual wan temporarily.

        cb0b1ee1-904d-4acf-85ac-39dc4fd5e5b2-image.png

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        • stephenw10S
          stephenw10 Netgate Administrator
          last edited by

          Try capturing on the WG interface and make sure it's all passing that way.

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            Tueem @stephenw10
            last edited by

            @stephenw10 Here is the traffic through the wg0 interface:
            Screenshot 2024-05-10 131442.png

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

              @Tueem and at the end there RESET.. what error are you getting in the client.. does it give an error code?

              I tried run it on my pc, but running into something with my ms store account and the account one of my grandkids must of used at one time on my pc..

              account.jpg

              Is that the error you getting?

              I show these connections to ms licensing server - but its not the IP you were talking about

              yourip.jpg

              Not exactly sure? why the launcher is not working - even if I don't own the game.. There has got to be some sort of free thing? If I get a chance will fire it up on my phone where I can test like your saying it works when not behind pfsense.

              But minecraft is a pretty popular game - if there was something in pfsense out of the box that broke it, I would assume the forums would be on fire about it.

              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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              • T
                Tueem @johnpoz
                last edited by Tueem

                @johnpoz No the error I'm getting is this on:
                8d276ac0-e4ee-49d5-92a3-8fa5587532ca-image.png
                Its the server which can't connect to the mojang authentication servers and thus not being able to verify my username.

                Could it be some issue with the wireguard client maybe?
                I've now tried connecting to another vpn I set up on my own on a vps and the issues are the same.

                My Client which doesn't run through the VPN works like a charm and even the server if i route it through the WAN.

                I would guess its a pretty rare scenario having a home server which you are hosting your own server on and trying to do it through a VPN.

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

                  @Tueem said in pfSense mangling packets?:

                  having a home server which you are hosting your own server on and trying to do it through a VPN.

                  Dude none of this at all mentioned in your OP..

                  If there is no vpn, and no server your running on your own network - everything works.. Where is your client out on the internet somewhere vpn'd to your pfsense and trying to talk to a server your hosting?

                  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

                    Hmm, and it also worked when you ran the WG client on the server directly, passing all traffic across it?

                    It's possible they don't want traffic using VPNs and have included things to detect it like Netflix etc. Though I'm not sure why they would.

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                    • johnpozJ
                      johnpoz LAYER 8 Global Moderator @stephenw10
                      last edited by

                      @stephenw10 could have some sort of split tunnel thing going on, his sniff on the wan if was routed through a vpn would be seeing traffic to the vpn endpoint, not some MS IP that 13 address from his wan.

                      Could be its sending reset because hey your IP is different than what it should be for whatever connection is being made from some other IP, 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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                      • T
                        Tueem @johnpoz
                        last edited by

                        @johnpoz Yeah I'm sorry it was pretty weird at first and the connections were also blocked through wan, but this apparently resolved itself. Thats why I brought it up later.

                        Im gonna try to explain my setup again.
                        I have a home server and a VPN from a provider which is assigned to a static IP.
                        That way Im trying to have my server available through that VPN IP and all the traffic from my home server should ONLY get routed through the VPN. It should never hit my WAN so that way the server has no association with my WAN IP.
                        All other services I tried work. I had game servers for other games to which I could connect fine and web servers also work fine. Its just the Minecraft IP which has problems.
                        But like stephenw10 said I tried it by using the VPN directly using the official desktop WIN10 Wireguard client and it connected fine, which is why I don't think its any VPN detection or blocking necessarily.

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                        • stephenw10S
                          stephenw10 Netgate Administrator
                          last edited by

                          And just to be clear that WG client is actually running on the same server? The 'server' in this case is a Windows box?

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                          • T
                            Tueem @stephenw10
                            last edited by

                            @stephenw10 if I run it through the server the connection works. But it should run on pfsense and the server should get its traffic policy routed to the vpn. thats where the issues exists

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                            • stephenw10S
                              stephenw10 Netgate Administrator
                              last edited by

                              Yup I just wanted to be sure you weren't testing that on some other Windows client.

                              Are you policy routing all traffic from that server over the VPN? Including DNS?

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                              • johnpozJ
                                johnpoz LAYER 8 Global Moderator @stephenw10
                                last edited by

                                @stephenw10 another prime x-y problem example

                                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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                                • T
                                  Tueem @stephenw10
                                  last edited by

                                  @stephenw10 No DNS is going over pfsense but I've set cloudflare and google dns. But except that all other traffic is routed through vpn

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

                                    @Tueem said in pfSense mangling packets?:

                                    No DNS is going over pfsense

                                    This can cause issues with stuff that is hosted in CDNs.. where you have one part of system pulling a dns from region X dns, and maybe the other end pulling from region Y.. And then for what your trying to do there ends of being a disconnect in who ends up talking to who up in the cloud, or talking from a different region that what is expected, 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

                                      Mmm, when you run the VPN client on the host I imagine it routes all traffic over the VPN and likely resets the host to se the VPN providers DNS. You should be able to check that on the host.

                                      I would try setting the DNS on the server to the same thing the VPN clients sets it to and then policy route all traffic from it over the VPN.

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                                      • T
                                        Tueem @stephenw10
                                        last edited by

                                        @stephenw10 That didn't help unfortunately

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                                        • T
                                          Tueem @Tueem
                                          last edited by Tueem

                                          What might also be interesting is that TLS handshakes with some sites (according to firefox) take very long through the vpn and cause a timeout.

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

                                            @Tueem said in pfSense mangling packets?:

                                            with some sites (according to firefox)

                                            How does this info present itself? While I don't run normally through a vpn, I do now and then testing stuff.. Not some service my own vpn that I run on a vps out on the internet, etc. And have never seen any such info presented..

                                            Long handshakes through a vpn would get me concerned about a mitm on the cert or some sort of proxy doing a bump on the ssl.. While sure a vpn can add some latency to the connection. There should be nothing really different in the handshake time other than whatever latency your seeing through the vpn for all traffic.

                                            Can you post up screenshot of how firefox is presenting that little tidbit of info?

                                            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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