Ecobee thermostat can’t connect to servers
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Just a typical TCP stream from the client to the server. Is it sending/receiving large packets every connection for example? Does the connection just remain open?
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@stephenw10 Attached is a sanitized pcap. Ecobee mac and lan interace mac sanitized to begin with bb dd cc and lan mac begins with 11 22 33.
sanitizedpacketcapture--20250828135527.pcap
The capture is a 10 min segment of steady state operation.
Note, the ecobee tries to resolve api.amazon.com every 50s. This is denied via dns server as well as blocking the entire amazon asn for the ecobee ip.
Hope this helps.
PS. please delete the previous message - it's already tagged as deleted, please remove permanently.
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Hmm, so it normally just holds open the TCP connection continually.
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@stephenw10 That's why I asked what packages were installed. Perhaps something is interfering.
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@GPz1100 @stephenw10
don't have too many installed.
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Hmm, are you able to capture the initial connection from the client to the server?
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@stephenw10
i have a pcap i took yesterday that i was capture while i rebooted the ecobee. trying to go through right now to see if any user/pass might of been passed not encrypted. -
@stephenw10
i think it's clean of user/pass. is there a way i can send it without just posting it? -
@ezhawk Other than the macs, I saw some exchanges include plain text tstat serial number (the PTR requests). Everything else I think is encrypted, at least between the tstat and ecobee. I can't comment on the amazon traffic as that's all blocked here.
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@ezhawk Is there a pcap when it's acting up? Or was that the one on the previous page?
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@GPz1100 that pcap is yesterday when i rebooted the ecobee and it can't connect to ecobee.com
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Hmm, nothing there really looks like a routing problem. If you told me that was it working normally I would believe it.
It has no problem connecting to home-fw.ecobee.com. Including with large packets. Though I note that's at a completely different IP than idt.
It ARPs for 10.99.0.35. Do you know what that is?
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@stephenw10
That's my Home Assistant server. Ecobee is integrated via Apple HomeKit into HA. -
Hmm, and I assume that continues to work fine even when it stops connecting to ecobee's servers?
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@stephenw10
Yes, there isn't any issue from HA to the Ecobee when the Ecobee cannot connect to the Ecobee servers. -
@ezhawk Which ecobee model is this?
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@GPz1100 I have the Enhanced model.
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Hmm, so previously when this happened you were only able to get it to reconnect by forcing a change in the WAN IP?
There might be some clue if you were able to capture the traffic at the point it failed but that could be tough. It's unpredictable as I understand it.
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@stephenw10
Something happened the other night that really points to the pfSense. I took a power hit and my UPS failed and the pfSense reloaded. After the reload, the Ecobee is online via the pfSense. I double checked and my WAN IP did not change either. I got the same IP that I had before the reload. So, in my mind that completely rules out idea that my IP is somehow being blacklisted if a simple reload of the pfSense restores connectivity.
