Wireshark-bugs: [Wireshark-bugs] [Bug 10300] ERF/Ethernet-related bug where a FCS is not present

Date: Wed, 23 Jul 2014 17:14:41 +0000

Comment # 7 on bug 10300 from
Stephen,

Ok I think FCS was only part of it.  I see what your saying but i think through
this thread the original problem was a bit diluted.

The purpose of the trace was to analyze a TLS negotiation issue.

TLS is not happening on the typical port 443 but instead 7547.

So for a controlled test:

Open the trace in 1.6.2
Select Packet 10, decode as -> SSL
Filter for SSL, you will see the full negotiation and failure


Open the trace in 1.10.18
Select Packet 10, decode as -> SSL
Filter for SSL, you will see only the Server Hello


We see in packet 13 in 1.10.18 multiple TCP errors under SEQ/ACK analysis and
the underlying protocol PPPoE we see a Payload Length Error.  I believe this is
why the rest of the packet cannot be dissected properly to analyze the TLS
failure.  

I personally do not believe this has anything to do with FCS, but this is not
my specialty so I hope to only guide you guys in the right direction.

Screen shots attached.


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