That was discussed early after starting of the working group and the group 
decided to not encrypt any header fields to increase deployability.

Mirja


> Am 08.03.2016 um 15:16 schrieb Black, David <[email protected]>:
> 
> That's correct - the TCP headers are not encrypted by any tcpinc security 
> protocol (the
> TLS profile is similar in this regard).  To encrypt TCP headers,  something 
> like IPsec is
> needed.
> 
> Thanks, --David
> 
> 
>> -----Original Message-----
>> From: Tcpinc [mailto:[email protected]] On Behalf Of Smith, Kevin, 
>> (R&D)
>> Vodafone Group
>> Sent: Tuesday, March 08, 2016 6:05 AM
>> To: tcpinc
>> Subject: [tcpinc] tcpcrypt - what's encrypted?
>> 
>> Apologies if this is obvious and I've missed it in the docs - but please can 
>> someone
>> confirm if the TCP protocol itself is encrypted as part of tcpcrypt, i.e. 
>> the ACKs,
>> MSS, cwnd etc. etc. will not be visible to any middleboxes? A quick test 
>> shows
>> them still visible to a packet capture...
>> 
>> Cheers
>> Kevin
>> 
>> 
>> 
>> 
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> 
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