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    Gre tunnel to protect IP.

    Scheduled Pinned Locked Moved General pfSense Questions
    63 Posts 2 Posters 10.4k Views
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    • stephenw10S
      stephenw10 Netgate Administrator @s_serra
      last edited by

      You will have to clear any existing states. You can see that rule has not matched anything yet.

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      • S
        s_serra
        last edited by

        This post is deleted!
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        • S
          s_serra
          last edited by

          It is, but the machine has no internet connection.

          df18d032-bc82-4c75-be99-e96e062311a2-image.png

          2ad42ac6-2760-4b62-a5d7-4305a6f29992-image.png

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          • stephenw10S
            stephenw10 Netgate Administrator
            last edited by

            Is the traffic going over the tunnel though? Do you see states on the GRE interface?

            You probably need to add a manual Outbounf NAT rule at the other end if you don't have a static route back to 192.168.1.0/24 there. Check the states at that end to see what's happening.

            Steve

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            • S
              s_serra
              last edited by s_serra

              The machine ping the other side
              just don't have internet
              Do I check the states in my host pfsense?
              0dc02b02-20e1-4d36-864f-8ca5bd8db740-image.png

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              • stephenw10S
                stephenw10 Netgate Administrator
                last edited by

                Yes, because it's probably not Outbound NATing the traffic. Add a rule for that.

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                • S
                  s_serra @stephenw10
                  last edited by

                  In my host's pfsense? What rule do I set?

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                  • stephenw10S
                    stephenw10 Netgate Administrator
                    last edited by

                    Yes. Check the states at the remote side and see if traffic is leaving the WAN without NAT. If it is switch Outbound NAT to hybrid mode and add a rule to cover it.

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                    • S
                      s_serra @stephenw10
                      last edited by

                      These are the remote host states
                      cda9d782-bece-43c9-bcab-0278735ded3a-image.png @stephenw10

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                      • stephenw10S
                        stephenw10 Netgate Administrator
                        last edited by

                        You need to start a continuous ping from 192.168.1.15 so you can see where it's opening states.

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                        • S
                          s_serra @stephenw10
                          last edited by

                          I ping the local machine to the remote tunnel
                          8c8d2184-65eb-41da-8d7a-f3f3f1f886bc-image.png

                          These are the states on remote pfsense with continuous ping on the local machine

                          4a731909-8558-4152-b32b-c1a6ecb90add-image.png

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                          • stephenw10S
                            stephenw10 Netgate Administrator
                            last edited by

                            You need to ping from 192.168.1.15 to something external like 8.8.8.8. Then look at the states it's generating at both ends.

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                            • S
                              s_serra @stephenw10
                              last edited by

                              e2112f12-91c8-4bc3-8dc5-399382843cdd-image.png

                              0ae9d213-9cb1-4518-9672-9a64b395065a-image.png

                              This is how the states are with the continuous ping for 1.1.1.1. I put 1.1.1.1 because I have google dns to be used like this for a better view

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                              • stephenw10S
                                stephenw10 Netgate Administrator
                                last edited by

                                Ok, so it's actually outbound NATing at the other end of the tunnel. You can see it appears as 10.0.2.1 rather than 192.168.1.15. So you may want to disable the NAT for the GRE interface at the client end.
                                You can also see it's not NATing the traffic out of the WAN at that end so you need a rule to add that there. That rule will depend on whether you disable the NAT at the client end.

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                                • S
                                  s_serra @stephenw10
                                  last edited by s_serra

                                  @stephenw10
                                  Can you tell me where I can disable NAT?
                                  For GRE tunnel only. I have the ip 192.168.1.2 with NAT for port 8006 going out through my WAN since it doesn't need protection that ip.
                                  Thanks

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                                  • S
                                    s_serra @stephenw10
                                    last edited by

                                    @stephenw10

                                    I've already disabled NAT only in the tunnel on the pfsense client and it's already here without NAT. Now it will just be creating a static route right?

                                    5a3a5a16-c99d-432e-b042-de95bdc617d5-image.png

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                                    • stephenw10S
                                      stephenw10 Netgate Administrator
                                      last edited by

                                      Ok, so you need to add an Outbound NAT rule on that side for 192.168.1.0/24 on WAN.

                                      If you have added a static route back to the main side I would expect the auto outbound rules to cover that so I assume there is not.

                                      Steve

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                                      • S
                                        s_serra @stephenw10
                                        last edited by s_serra

                                        I have now bought a new ip since I don't want to use the router's ip on the machines

                                        3bd3a726-de23-414b-8e09-21f4f37ea992-image.png

                                        I configured it on the windows machine like this and created a VLAN on the pfsense client.

                                        8abaab0c-f87a-4c2f-84d6-7e476b58e7fb-image.png

                                        I'm constantly pinging from the windows machine to 1.1.1.1 and in the pfsense host states it is received like this

                                        eef27ac0-ed55-4da3-a076-153c3abbc0e1-image.png

                                        In the NAT part of the pfsense host I configured it like this ie the ip 185.113.141.145 is the ip wan of the pfsense host and I don't want to use it for anything else. And the ip 185.113.141.150 I want to be used in my virtual machine.

                                        756694bf-d724-48a9-a364-f436d144cc5b-image.png

                                        The only problem is that the machine is without internet for the ip 185.113.141.150

                                        21a4ddc6-c82c-465c-ba80-6dcddbf48a8b-image.png

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                                        • stephenw10S
                                          stephenw10 Netgate Administrator
                                          last edited by

                                          You can't use that IP directly on the client because that conflicts with the WAN subnet at the remote site.
                                          Instead you need to add that as a VIP on the WAN at the remote site and then NAT the traffic to it.

                                          Steve

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                                          • S
                                            s_serra @stephenw10
                                            last edited by s_serra

                                            I already added the virtual ip.
                                            To do the nat routing is as follows?
                                            47c026f2-d78f-4beb-9e8e-adece776a89a-image.png

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