Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    Problems with IPsec vpn between pfSense and Oracle Cloud Infrastructure

    Scheduled Pinned Locked Moved IPsec
    18 Posts 3 Posters 3.7k Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • DerelictD
      Derelict LAYER 8 Netgate
      last edited by

      IPsec does not work like that (yet. VTI IPsec coming in 2.4.4 does).

      You create a "Phase 2" entry for:

      Local: 192.168.1.0/24
      Remote: 10.72.0.0/16

      If that comes up, it establishes kernel traffic selectors that put matching traffic through IPsec.

      Status > IPsec, SPDs will show 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

        Thank you for help.
        My SPD view
        My question is regarding the rules for establishing communication after the ipsec tunnel is established and how do I monitor traffic?
        On the other side I asked the logs to try to identify if the internal network communication 192.168.1.0/24 is being blocked.
        Thank you again.

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

          Firewall rules on IPsec govern connections originating from the other side of the IPsec tunnels.

          Firewall rules on the local interfaces govern connections coming into the firewall from the hosts connected there.

          https://www.netgate.com/docs/pfsense/firewall/firewall-rule-basics.html

          https://www.netgate.com/docs/pfsense/firewall/firewall-rule-troubleshooting.html

          https://www.netgate.com/docs/pfsense/book/firewall/troubleshooting-firewall-rules.html

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

          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

            @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.

            1 Reply Last reply Reply Quote 0
            • 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)

              1 Reply Last reply Reply Quote 0
              • 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

                1 Reply Last reply Reply Quote 0
                • 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

                                      1 Reply Last reply Reply Quote 0
                                      • First post
                                        Last post
                                      Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.