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    Ecobee thermostat can’t connect to servers

    Scheduled Pinned Locked Moved General pfSense Questions
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    • E Offline
      ezhawk @GPz1100
      last edited by

      @GPz1100 said in Ecobee thermostat can’t connect to servers:

      @ezhawk Each firewall is getting a different public ip. That complicates things.

      Test with the same public IP for each device.

      I cannot run both at the same time with having the same IP and I also don't have static IPs. As I've said multiple times, behind pfSense it'll work for a few weeks and the stop. The temp fix is to spoof and get a new IP. I had the Ecobee behind the a Cisco with the same IP for more than 2 months and it never dropped once. I've been through more than a dozen different IPs trying to figure it out by using spoofing methods. The IP itself isn't the issue.

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      • stephenw10S Offline
        stephenw10 Netgate Administrator
        last edited by

        And just to confirm when this happens everything else behind pfSense remains functional? Only the Ecobee seems to be affected?

        E 2 Replies Last reply Reply Quote 0
        • E Offline
          ezhawk @stephenw10
          last edited by

          @stephenw10 said in Ecobee thermostat can’t connect to servers:

          And just to confirm when this happens everything else behind pfSense remains functional? Only the Ecobee seems to be affected?

          That is correct. Every other device that goes through the pfSense works normally.

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          • E Offline
            ezhawk @stephenw10
            last edited by ezhawk

            @stephenw10
            well, that didn't take long. once again, behind the pfsense my ecobee now shows disconnected. Network connectivity is all up. I can ping out from the ecobee by ip and dns name, but the pfsense is blocking its connection to the ecobee.com servers.

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

              @ezhawk said in Ecobee thermostat can’t connect to servers:

              but the pfsense is blocking its connection to the ecobee.com servers.

              Blocking : what pfSense rule blocks traffic from the bee ?
              Can you list the firewall rules on that LAN ?
              Is the bee set up to use DHCP ? If so : read How to change Kea DHCP log level so now you know how to log DHCP leases : and the question is : did it get a DHCP lease (that is an IP, a network, a gateway, a DNS - check these all) ?
              If static : what is it's setup ?

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

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              • stephenw10S Offline
                stephenw10 Netgate Administrator
                last edited by

                Mmm, what connection is actually being blocked?

                If you kill all the states from the thermostat and allow it to open new states does that fix the connection? If not do any of those states have one way traffic with no replies?

                GPz1100G E 2 Replies Last reply Reply Quote 0
                • GPz1100G Offline
                  GPz1100 @stephenw10
                  last edited by GPz1100

                  Under steady state conditions I show the ecobee premium connecting to a single ip.

                  67a13b98-e9e5-4a80-baa2-1464cd5fa15d-image.png

                  and periodic connections to the dns server (x.y.100.2).

                  Using any packages that may be doing traffic inspection?

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                  • E Offline
                    ezhawk @stephenw10
                    last edited by

                    @stephenw10

                    I've killed all the states and the connection doesn't restore. I reboot the ecobee and after letting everything come up clear out these are what i'm left with for states and the ecobee cannot connect to the ecobee servers.

                    (I had this exact same issue with Google Nest and assumed it was something with Nest which is why I now have an ecobee.)

                    3ccb378e-bd0d-4acc-ac5b-282df908256b-image.png

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                    • stephenw10S Offline
                      stephenw10 Netgate Administrator
                      last edited by

                      Hmm, OK so two way traffic but both state sets are in FIN-WAIT rather than established and only 4 packets.

                      Try pcapping that traffic and see what's going on.

                      Interesting that it's the same remote address for both of you.

                      Can you try routing that traffic over a VPN to get a completely different source IP?

                      E GPz1100G 2 Replies Last reply Reply Quote 0
                      • E Offline
                        ezhawk @stephenw10
                        last edited by

                        @stephenw10

                        I did pcaps from the WAN and LAN and rebooted the ecobee each time but not sure exactly what i'd be looking for in the pcap. I don't have a VPN to route traffic over.

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                        • stephenw10S Offline
                          stephenw10 Netgate Administrator
                          last edited by

                          I'm away right now so I can't setup a drop-link. But do the captures show just the 4 packets shown in the state table for each connection?

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                          • E Offline
                            ezhawk @stephenw10
                            last edited by

                            @stephenw10
                            i see some fin acks both ways. after a while all the states drop and then it comes back and in the states it just sits at fin wait.

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                            • stephenw10S Offline
                              stephenw10 Netgate Administrator
                              last edited by

                              Can we see the pcap from the pfSense gui with the TCP flags? You can obscure the IPs if you need.

                              We need to see which side stops responding.

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                              • E Offline
                                ezhawk @stephenw10
                                last edited by

                                @stephenw10

                                wan pcap
                                1338d7ae-d96b-4c08-bbf8-d7bfaad8a869-image.png

                                lan pcap
                                c03e2ead-caf7-4bd1-976b-e334fd43c475-image.png

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                                • stephenw10S Offline
                                  stephenw10 Netgate Administrator
                                  last edited by

                                  Hmm, interesting. That dupe ACK is odd. Like the server expects to see something from the client and doesn't. Except the dupe comes 12 microseconds after the first. Other than that it looks like a pretty normal TCP connection. The client just isn't sending or pulling anything. I do note there are no large packets shown. But they are not present on either interface. pfSense seems to be passing that traffic as expected. 😕
                                  Even when the dupe ACK doesn't happen the server sends a fin-ack pretty much immediately.

                                  GPz1100G 1 Reply Last reply Reply Quote 0
                                  • GPz1100G Offline
                                    GPz1100 @stephenw10
                                    last edited by

                                    @ezhawk re vpn

                                    You can set up a free cloudflare warp wireguard connection using this project - https://github.com/ViRb3/wgcf .

                                    From the releases page download the one appropriate for your pfsense architecture (or a linux vm).

                                    Run wgcf register then wgcf generate

                                    This will create a .conf file from which you can pull the necessary credentials to supply pf's wg package. Use policy based routing to pass ecobee traffic through the cf tunnel. Don't forget to create an outbound nat rule.

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                                    • GPz1100G Offline
                                      GPz1100 @stephenw10
                                      last edited by

                                      @stephenw10 It would be interesting to compare the state timeout values between pfsense and the other firewall @ezhawk is using. Possible some values are longer in pfsense and/or not playing nicely with the isp?

                                      Looking at the pfs/system_advanced_firewall.php page, all mine are default. WAN MTU at 1500 too (att fiber connection).

                                      E stephenw10S 2 Replies Last reply Reply Quote 0
                                      • E Offline
                                        ezhawk @GPz1100
                                        last edited by

                                        @GPz1100
                                        mine are all default in the firewall settings too. WAN mtu is actually just using the adaptors default. Don't have any defined MTU.

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                                        • stephenw10S Offline
                                          stephenw10 Netgate Administrator @GPz1100
                                          last edited by

                                          @GPz1100 Are you able to grab a pcap for comparison with a working connection?

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                                          • GPz1100G Offline
                                            GPz1100 @stephenw10
                                            last edited by

                                            @stephenw10 What specifically do you want captured, and for how long? I can use the pf packet capture gui option but what options do you want set there?

                                            The ecobee is on the IOT vlan which only has rfc1918 access to dns server and internet.

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