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    How stable is OpenVPN?

    Scheduled Pinned Locked Moved OpenVPN
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    • D
      DominikHoffmann @viragomann
      last edited by

      @viragomann: It looked like it was stopped, but the first three log entries on January 3 have the same PID as the entries on New Year’s Eve and before had.

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      • D
        DominikHoffmann @michmoor
        last edited by

        @michmoor said in How stable is OpenVPN?:

        Any logged in users? What does the system logs show?

        I am the only user using it, currently.

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        • M
          michmoor LAYER 8 Rebel Alliance @Gertjan
          last edited by

          @gertjan said in How stable is OpenVPN?:

          But I was asking to myself lately : why not route my captive portals users over the VPN client out the VPN ISP ? This way, my clients can not 'taint' my IPv4, because, after all, I am still responsible for whatever comes in and goes out of my IPv4.

          Hmm..This is a good idea.

          Firewall: NetGate,Palo Alto-VM,Juniper SRX
          Routing: Juniper, Arista, Cisco
          Switching: Juniper, Arista, Cisco
          Wireless: Unifi, Aruba IAP
          JNCIP,CCNP Enterprise

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          • D
            DominikHoffmann @michmoor
            last edited by

            @michmoor, @Gertjan

            I am wondering, how that works. Is it like this:

            Captive Portal → VPN Client running on pfSense → VPN Server running on ISP’s hardware

            ?

            How is this substantially different from

            Captive Portal → Client assigned to VLAN segregated from LAN → WAN via ISP

            ?

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            • M
              michmoor LAYER 8 Rebel Alliance @michmoor
              last edited by

              @Gertjan I had an existing 3rd party VPN operating so what the heck...switched over my Guest VLAN.

              1c60f6f9-8875-451d-8199-9af9f82bf8b2-image.png

              Firewall: NetGate,Palo Alto-VM,Juniper SRX
              Routing: Juniper, Arista, Cisco
              Switching: Juniper, Arista, Cisco
              Wireless: Unifi, Aruba IAP
              JNCIP,CCNP Enterprise

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              • M
                michmoor LAYER 8 Rebel Alliance
                last edited by

                @dominikhoffmann We were discussing something different than the OpenVPN crashing issue.
                What we are talking about is policy routing.
                Our PFsense firewall is an OpenVPN client to a OpenVPN server (Nordvpn or PIA or insert 3rd party].
                As that OpenVPN server is now enabled as a gateway, we can direct clients to that gateway via firewall rules , aka, policy routing.
                So now users on our LAN or GuestNet or whichever interface will be routed out the OpenVPN connection. Any user that goes against our network policy will only be hurting the IP reputation of the VPN provider and leaving our IP that we own (or assigned to us) alone.
                Its really not a bad idea.

                Firewall: NetGate,Palo Alto-VM,Juniper SRX
                Routing: Juniper, Arista, Cisco
                Switching: Juniper, Arista, Cisco
                Wireless: Unifi, Aruba IAP
                JNCIP,CCNP Enterprise

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                • D
                  DominikHoffmann @michmoor
                  last edited by

                  @michmoor: I get it now

                  Is there a tutorial somewhere, that you know of, that you would recommend, on how to set up a pfSense box as an OpenVPN client?

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

                    @dominikhoffmann said in How stable is OpenVPN?:

                    pfSense box as an OpenVPN client?

                    To where? Pretty much every vpn service has some "guide" on how to connect to their service - most of them have a section for pfsense.

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                    • GertjanG
                      Gertjan @DominikHoffmann
                      last edited by Gertjan

                      @dominikhoffmann

                      39b0f79c-df99-4120-9e1c-7a2a71c09898-image.png

                      Not crashing.
                      62444 was signaled to stop. For the usual reasons like : an interface (WAN ?) went down.
                      I agree : it should restart when the that interface came back.

                      edit : to see what happened, look in the main system log for events at that moment.

                      No "help me" PM's please. Use the forum, the community will thank you.
                      Edit : and where are the logs ??

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                      • D
                        DominikHoffmann @Gertjan
                        last edited by

                        @gertjan said in How stable is OpenVPN?:

                        @dominikhoffmann

                        Not crashing.
                        62444 was signaled to stop.

                        Correct! That was, when I restarted the service.

                        GertjanG 1 Reply Last reply Reply Quote 0
                        • GertjanG
                          Gertjan @DominikHoffmann
                          last edited by

                          @dominikhoffmann
                          Ah, ok, so the openvpn server 62444 stayed silent - no log lines since last 24 December.
                          Do you have enforced your openvpn server vpn rule, like not using port 1194, or limited to a known list op source IPs ?
                          Normally, for a openvpn server, you would see ones in a while some log lines because your openvpn is "scanned". A bit scary at first, but actually quiet handy as you could see these tests as a sort of 'I'm still alive' tests.
                          Or, true : openvpn was running but not listening anymore, which is close to a dead process.

                          No "help me" PM's please. Use the forum, the community will thank you.
                          Edit : and where are the logs ??

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                          • D
                            DominikHoffmann @Gertjan
                            last edited by

                            @gertjan said in How stable is OpenVPN?:

                            Do you have enforced your openvpn server vpn rule, like not using port 1194, or limited to a known list op source IPs ?

                            The firewall rule is the default one generated by the setup wizard:
                            Screenshot 2023-01-05 at 12.16.51 PM.png

                            So, the answer is, no.

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                            • D
                              DominikHoffmann
                              last edited by

                              It went down again in the last couple of days. The OpenVPN logs did not show anything. Is there anything else I should check for?

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                              • stephenw10S
                                stephenw10 Netgate Administrator
                                last edited by

                                When you try to connect with an external client do you see states created on the WANfor the incoming connection attempts?

                                I'm not aware of any issue in OpenVPN itself that behaves like that.

                                Steve

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                                • D
                                  DominikHoffmann @stephenw10
                                  last edited by

                                  @stephenw10: I am not familiar with what states are and what that list would signify.

                                  Do you mean entries like these:

                                  Screenshot 2023-01-23 at 7.03.53 PM.png

                                  I don’t believe that there were any entries in the states table showing evidence of my failed attempts to connect to the OpenVPN server, before I restarted the service. However, I will need to verify this, when I encounter it being down the next time.

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                                  • stephenw10S
                                    stephenw10 Netgate Administrator
                                    last edited by

                                    Nope, those are states on the OpenVPN interface, so inside the tunnel. What I would expect to see are states on the WAN on whatever port you're running OpenVPN on, UDP 1194 by default.
                                    If you don't see those states then the VPN traffic from the clients is not arriving which would explain why there are no logs for connection attempts.

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                                    • D
                                      DominikHoffmann @stephenw10
                                      last edited by

                                      @stephenw10: … And if a restart of the OpenVPN server fixes things, then that’s a sign that there was nothing else wrong upstream from the gateway, I would think.

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                                      • stephenw10S
                                        stephenw10 Netgate Administrator
                                        last edited by

                                        Except that we've seen in the other thread that doing so is triggering, at least, dpinger to restart. So it could be doing more than you think.

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