Meraki

Epicovello75

Thanks all for the responses, I have had Miraki Support look at the connection and they do not see any issues also with traffic going/coming for these connections. As Raphaell suggested going to setup a temp GW and bypass just to see if issues persists. No other Security Software running at this time either. Lastly just going to also spin up new vanilla server 2022 VM guest and run similar testing to see if the issues exists in new enviroment.

Epicovello75

ACK Packet TTL 246 Close_notify also 246

Epicovello75

Client has been running Server 2016 behind Miraki for some period now, recently new server was deployed with Windows 2022 Serever. Server 2016 and Server 2022 are Identical in software running. They both host a WEB Site for users to log into their ERP system. Withing the EPR system the servers make a secure call to avatax.avalara.net this is followed by TLS 1.2 Handshake, Client Hello Packet (sent from Client avatax server) Server Hello in response to start negotiating . sent from avatax server back to client) Works 100% of the time when it comes from the server 2016. Fails 75% of the time when initiated from server 2022. Picture below PCAP from failures first, followed but a normal TLS handshake. Also like to note I have a second windows 2022 Server , same connection but behind a non miraki firewall that make ths TLS handshake 100% Bad Connection Good Connection below

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Re: windows Server 2022 TLS Handshakes Randomly Fail with Close_Notify

Re: windows Server 2022 TLS Handshakes Randomly Fail with Close_Notify

windows Server 2022 TLS Handshakes Randomly Fail with Close_Notify