Re: [TLS] Is stateless HelloRetryRequest worthwhile? (was Re: TLS 1.3 Problem?)

"Salz, Rich" <rsalz@akamai.com> Thu, 01 October 2020 11:09 UTC

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From: "Salz, Rich" <rsalz@akamai.com>
To: Michael D'Errico <mike-list@pobox.com>, "tls@ietf.org" <tls@ietf.org>
Thread-Topic: [TLS] Is stateless HelloRetryRequest worthwhile? (was Re: TLS 1.3 Problem?)
Thread-Index: AQHWl6Pk/D3bQp+xQkS5zavA8hkS3qmCl3oA
Date: Thu, 1 Oct 2020 11:09:50 +0000
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Subject: Re: [TLS] Is stateless HelloRetryRequest worthwhile? (was Re: TLS 1.3 Problem?)
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    > Not always; see TCP "fast open" options.

>    Maybe this should be disabled?  Fortunately if you wanted
    to there is a setsockopt for TCP_FASTOPEN.
 
Yeah, that will go over great for the folks who want to DDoS you. :)