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    Problems with IPsec vpn between pfSense and Oracle Cloud Infrastructure

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    • R
      RodrigoCBraga
      last edited by

      @derelict said in Problems with IPsec vpn between pfSense and Oracle Cloud Infrastructure:

      As for "Monitoring" that is a fairly generic term. What are you actually looking to do?

      I'm trying to identify on which side is the problem.
      If it is some configuration in pfSense or OCI.
      I performed some tests as a tracert and did not succeed when I ran the tracert from a workstation on the 192.168.1.0/24 network.
      On the other hand was informed that I could try to access via remote desktop to a certain ip on the internal network 10.72.0.0/16.
      Both tests failed.
      The phase 2 setup is the same as the one you set.
      Thank you for your help.

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      • DerelictD
        Derelict LAYER 8 Netgate
        last edited by

        You can packet capture on the IPsec interface (enc0) to see if pings are going out, replies are being received, etc.

        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)

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        • R
          RodrigoCBraga
          last edited by

          Thanks for your help.
          The client said that analyzing the logs and with a similar problem they had with a PaloAlto solution is necessary to include a new remote network 0.0.0.0/0.
          I need help to do this procedure, because when I try to create a network there is no / 0 option. Can you help me?

          Security Parameter Index

          The Oracle Cloud Infrastructure VPN headends use next-hop-based tunnels. When you create a new IPSec connection, you specify a list of IPv4 networks that should be routed from your dynamic routing gateway (DRG) through the IPSec tunnel to your CPE.

          Oracle IPSec ProxyIDs

          local=0.0.0.0/0
          remote=0.0.0.0/0
          service=any

          https://docs.cloud.oracle.com/iaas/Content/Network/Reference/genericCPE.htm

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          • DerelictD
            Derelict LAYER 8 Netgate
            last edited by Derelict

            Site-to-site tunnels to 0.0.0.0/0 will catch all traffic from the source network including traffic to the internet. I would not recommend doing that, and it is doubtful Oracle cloud IPsec requires it.

            If the networks in your Phase 2 are the problem, that will show in the IPsec logs. Check the log settings )VPN> IPsec, Advanced) and be sure that IKE SA, IKE Child SA, and Configuration Backend are set to Diag. Everything else can be Control.

            Look at where it is failing and compare with this:

            https://www.netgate.com/docs/pfsense/vpn/ipsec/ipsec-troubleshooting.html

            Or, of course, you can post the logs here.

            When you create a new IPSec connection, you specify a list of IPv4 networks that should be routed from your dynamic routing gateway (DRG) through the IPSec tunnel to your CPE.

            Right. All of those routed networks should be specified as Local Networks in Phase 2 entries on your side. The Cloud CIDR should be the Remote Network for all of them.

            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)

            1 Reply Last reply Reply Quote 0
            • R
              RodrigoCBraga
              last edited by

              LogPart1
              LogPart2
              LogPart3
              LogPart4
              LogPart5
              LogPart6
              IPSEC
              IPSEC RULES
              NATOUTBOUND
              RULES WAN
              STATE FILTER
              STATIC RULES

              My set up.
              I hope you can help me.
              Thanks.

              1 Reply Last reply Reply Quote 0
              • DerelictD
                Derelict LAYER 8 Netgate
                last edited by

                Delete any static routes you added like that 10.72.0.0/16 to 192.168.1.1. That is not how IPsec works.

                Honestly, it looks like your IPsec is doing what you asked it to do. Need to find out why the host in the cloud (10.72.112.30) isn't responding or why your traffic isn't coming back. That's more of an oracle question.

                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)

                R 1 Reply Last reply Reply Quote 0
                • R
                  RodrigoCBraga
                  last edited by

                  This post is deleted!
                  1 Reply Last reply Reply Quote 0
                  • R
                    RodrigoCBraga
                    last edited by RodrigoCBraga

                    I have a doubt.
                    In pfsense it is possible to do configuration where in phase 2 has the network 0.0.0.0/0 as local and remote?
                    Attached, screen with configuration between Palo Alto firewall and Oracle Cloud Infrastructure.
                    Palo Alto Phase 2

                    1 Reply Last reply Reply Quote 0
                    • R
                      RodrigoCBraga @Derelict
                      last edited by

                      @derelict
                      Hello, can you still help me?

                      1 Reply Last reply Reply Quote 0
                      • DerelictD
                        Derelict LAYER 8 Netgate
                        last edited by

                        Help how?

                        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)

                        R E 2 Replies Last reply Reply Quote 0
                        • R
                          RodrigoCBraga @Derelict
                          last edited by

                          @derelict said in Problems with IPsec vpn between pfSense and Oracle Cloud Infrastructure:

                          Help how?
                          Yes.

                          I have a doubt.
                          In pfsense it is possible to do configuration where in phase 2 has the network 0.0.0.0/0 as local and remote?
                          Attached, screen with configuration between Palo Alto firewall and Oracle Cloud Infrastructure.
                          Palo Alto Phase 2

                          1 Reply Last reply Reply Quote 0
                          • E
                            Ernani @Derelict
                            last edited by

                            @derelict

                            Hello, I would like to ask your attention to verify Oracle documentation and to comment that Pfsense is compatible and support Oracle VPNAAS.
                            1 - Oracle documentation to a Generic CPE:
                            https://docs.cloud.oracle.com/iaas/Content/Network/Reference/genericCPE.htm

                            Requirements for generic CPE devices are:

                            local=0.0.0.0/0
                            remote=0.0.0.0/0
                            service=any

                            Please let us know your thoughts about that.

                            Regards,
                            Ernani

                            1 Reply Last reply Reply Quote 0
                            • DerelictD
                              Derelict LAYER 8 Netgate
                              last edited by Derelict

                              Personal opinion:

                              I think that is completely uncalled for.

                              On pfSense that will catch all traffic and send it over the tunnel unless extreme measures are taken to bypass it. And there is no way to bypass traffic from the firewall itself.

                              I cannot see how Oracle expects that to work for people.

                              Again, you should be able to create Phase 2 entries with your cloud subnet as remote and your local subnet(s) as local.

                              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)

                              E 1 Reply Last reply Reply Quote 0
                              • E
                                Ernani @Derelict
                                last edited by

                                @derelict

                                I agree with you, since I have configured others tunnels with different suppliers to Oracle without use that requirement, but I saw some intermittencies.

                                Thank you,
                                Ernani

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