On Sat, Aug 12, 2023 at 12:53:35PM -0400, Viktor Dukhovni via Postfix-users 
wrote:

> > Handshake type: 01 (Client Hello)
> > Length: 00 00 9c (156)

One thing I failed to mention is that length of 156 is rather unexpected
here, because the containing TLS record layer header promised a length
of 158 which is two bytes too short to contain this TLS client hello
(type(1 byte), length(3 bytes), payload) with a payload length of 156.

One might then expect a second TLS record with the rest of the client
hello?  But why would it be fragmented this way?

And there's also that mysterious 0x01,0x88 cipher, which is not listed
in the IANA TLS ciphersuite registry.

-- 
    Viktor.
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