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Re: [TLS] TLS message limits

Peter Gutmann <pgut001@cs.auckland.ac.nz> Wed, 31 October 2018 04:52 UTC

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From: Peter Gutmann <pgut001@cs.auckland.ac.nz>
To: John Mattsson <john.mattsson@ericsson.com>, Martin Thomson <martin.thomson@gmail.com>, "<tls@ietf.org>" <tls@ietf.org>
Thread-Topic: [TLS] TLS message limits
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Date: Wed, 31 Oct 2018 04:52:49 +0000
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Subject: Re: [TLS] TLS message limits
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John Mattsson <john.mattsson@ericsson.com> writes:

>The total amount of data sent in the TLS handshake is quite a big concern
>when TLS is used in EAP-TLS. Many authenticator (access point)
>implementations will drop the EAP session if it hasn't finished after 40 - 50
>packets or approximately 60 kB. 

It's even worse with the common EAP-over-RADIUS, where you're limited to 4kB
total size, with even that needing to be broken down into 253-byte sub-
packets.

Peter.

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