I think maybe they use AWS for DNS, but that Cloudflare is doing attack mitigation for AWS.
From: AF <af-boun...@af.afmug.com> On Behalf Of Matt Hoppes Sent: Friday, July 17, 2020 8:52 PM To: AnimalFarm Microwave Users Group <af@af.afmug.com> Subject: Re: [AFMUG] Federated Wireless SAS outage? That’sa major problem. On Jul 17, 2020, at 9:30 PM, Cassidy B. Larson <c...@infowest.com <mailto:c...@infowest.com> > wrote: So, appears cambiumnetworks.com <http://cambiumnetworks.com> uses cloudflare for DNS alone. Cloudflare goes inaccessible, bye bye cambiumnetworks.com <http://cambiumnetworks.com> and I assume cnheat. sas.cbrs.cambiumnetworks.com <http://sas.cbrs.cambiumnetworks.com> is the URL for the cnmaestro SAS URL. cloudflare DNS tell us to go ask AWS DNS for how to resolve *.cbrs.cambiumnetworks.com <http://cbrs.cambiumnetworks.com> , but cloudflare tell us to only cache these NS records for 5 min.. so there’s our problem. 5 min of cloudflare being unresponsive and we’re toast for valid cnmaestro SAS URL resolution. On Jul 17, 2020, at 4:59 PM, castarritt <castarr...@gmail.com <mailto:castarr...@gmail.com> > wrote: cnHeat was broken too. On Fri, Jul 17, 2020 at 5:34 PM Ken Hohhof <af...@kwisp.com <mailto:af...@kwisp.com> > wrote: I think it was actually cnMaestro that went away, or its IP address couldn’t be looked up. From: AF <af-boun...@af.afmug.com <mailto:af-boun...@af.afmug.com> > On Behalf Of Cassidy B. Larson Sent: Friday, July 17, 2020 5:14 PM To: AnimalFarm Microwave Users Group <af@af.afmug.com <mailto:af@af.afmug.com> > Subject: Re: [AFMUG] Federated Wireless SAS outage? Our Google SAS also went offline. Whatcha wanna bet CNMaestro hard codes requests to 1.1.1.1 to resolve SAS URLs? Gonna have to do some tcpdumps to verify. On Jul 17, 2020, at 3:58 PM, Larry Smith <lesm...@ecsis.net <mailto:lesm...@ecsis.net> > wrote: Cloudflare had a major issue lasting about 30 minutes -- Larry Smith <mailto:lesm...@ecsis.net> lesm...@ecsis.net On Fri July 17 2020 16:47, Joe Novak wrote: whatever just blipped on the internet probably caused it, authoritative servers at Cloudflare maybe? It's appears to be working again here via Comcast and work. On Fri, Jul 17, 2020 at 4:44 PM Ken Hohhof <af...@kwisp.com <mailto:af...@kwisp.com> > wrote: TTL on DNS record is 1 minute. Serial number is 1 which seems strange. *From:* AF <af-boun...@af.afmug.com <mailto:af-boun...@af.afmug.com> > *On Behalf Of *Nate Burke *Sent:* Friday, July 17, 2020 4:37 PM *To:* AnimalFarm Microwave Users Group <af@af.afmug.com <mailto:af@af.afmug.com> > *Subject:* Re: [AFMUG] Federated Wireless SAS outage? Cloud.cambiumnetworks.com <http://cloud.cambiumnetworks.com/> is working fine for me. I'm resolving to us-east-1-rtr-1-578252723.us-east-1.elb.amazonaws.com <http://us-east-1-rtr-1-578252723.us-east-1.elb.amazonaws.com/> [18.213.196.79] On 7/17/2020 4:36 PM, Ken Hohhof wrote: Actually, I can’t get DNS resolution for cloud.cambiumnetworks.com <http://cloud.cambiumnetworks.com/> . Even at my home which is not on my network. *From:* AF <af-boun...@af.afmug.com <mailto:af-boun...@af.afmug.com> > <af-boun...@af.afmug.com <mailto:af-boun...@af.afmug.com> > *On Behalf Of *Ken Hohhof via AF *Sent:* Friday, July 17, 2020 4:32 PM *To:* 'AnimalFarm Microwave Users Group' <af@af.afmug.com <mailto:af@af.afmug.com> > <af@af.afmug.com <mailto:af@af.afmug.com> > *Cc:* Ken Hohhof <af...@kwisp.com <mailto:af...@kwisp.com> > <af...@kwisp.com <mailto:af...@kwisp.com> > *Subject:* [AFMUG] Federated Wireless SAS outage? Anyone else experiencing SAS not reachable errors? Cambium CBRS with Federated Wireless SAS. -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list <mailto:AF@af.afmug.com> AF@af.afmug.com <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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