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RE: Intermittent SSL Handshake Errors

Lukas Tribus
February 03, 2015 03:42PM
> I just finished running an experiment that has shed some light on the issue.
> It has not yet been solved though.
>
> I setup another nginx server with the same configuration with an upstream
> app that always responds with HTTP 200. I included JS on each page load in
> production to make a single request to this server.
>
> I ran tcpdump on the test server and what I found was very interesting.
> Client connections producing the above "inappropriate fallback" on the test
> server all appear to do some form of the following:
>
> (Client and Server successfully complete 3-way handshake)
> Client: Client Hello TLSv1.2
> Server: RST
> Client: ACK
> Server: RST
> (Client and Server successfully complete 3-way handshake)
> Client: Client Hello TLSv1.1
> Server: RST
> Client: ACK
> Server: RST
> (Client and Server successfully complete 3-way handshake)
> Client: Client Hello TLSv1.0
> Server: Encrypted Alert (Content Type: Alert (21))
> (Client sends RST, which the server acknowledges, and the connection ends)

Can you reliably reproduce this with specific client software or networks? Can
you upload a pcap file this failed handshake somewhere for further inspection?



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Subject Author Posted

Intermittent SSL Handshake Errors

Eric R. January 31, 2015 01:06PM

Re: Intermittent SSL Handshake Errors

Richard Stanway January 31, 2015 02:04PM

Re: Intermittent SSL Handshake Errors

Etienne Champetier January 31, 2015 03:26PM

Re: Intermittent SSL Handshake Errors

ericr February 02, 2015 02:56PM

Re: Intermittent SSL Handshake Errors

tempspace February 02, 2015 03:26PM

Re: Intermittent SSL Handshake Errors

ericr February 03, 2015 01:18PM

Re: Intermittent SSL Handshake Errors

tempspace February 03, 2015 02:04PM

Re: Intermittent SSL Handshake Errors

ericr February 03, 2015 09:42PM

Re: Intermittent SSL Handshake Errors

tempspace February 03, 2015 09:48PM

RE: Intermittent SSL Handshake Errors

Lukas Tribus February 03, 2015 03:42PM

Re: RE: Intermittent SSL Handshake Errors

ericr February 06, 2015 01:49PM

RE: Intermittent SSL Handshake Errors

Lukas Tribus February 06, 2015 06:32PM

Re: Intermittent SSL Handshake Errors

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Re: Intermittent SSL Handshake Errors

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Re: Intermittent SSL Handshake Errors

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Re: Intermittent SSL Handshake Errors

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Re: Intermittent SSL Handshake Errors

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Re: Intermittent SSL Handshake Errors

Maxim Dounin March 21, 2015 10:54AM

Re: Intermittent SSL Handshake Errors

tempspace March 21, 2015 11:50AM

Re: Intermittent SSL Handshake Errors

tempspace March 21, 2015 11:59AM

Re: Intermittent SSL Handshake Errors

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Re: Intermittent SSL Handshake Errors

flechamobile July 12, 2015 12:33PM

Re: Intermittent SSL Handshake Errors

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Re: Intermittent SSL Handshake Errors

flechamobile January 15, 2016 06:36PM

Re: Intermittent SSL Handshake Errors

flechamobile January 15, 2016 06:41PM

Re: Intermittent SSL Handshake Errors

piyushmalhotra February 11, 2016 01:26PM

Re: Intermittent SSL Handshake Errors

tempspace July 14, 2015 09:58PM

Re: Intermittent SSL Handshake Errors

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Re: Intermittent SSL Handshake Errors

piyushmalhotra January 11, 2016 02:13PM



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