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Deprecating TLSv1.0 and TLSv1.1

Document Type Replaced Internet-Draft (tls WG)
Expired & archived
Authors Kathleen Moriarty , Stephen Farrell
Last updated 2018-09-10 (Latest revision 2018-07-25)
Replaced by RFC 8996
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Additional resources Mailing list discussion
Stream WG state Adopted by a WG
Document shepherd (None)
IESG IESG state Replaced by draft-ietf-tls-oldversions-deprecate
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document [if approved] formally deprecates Transport Layer Security (TLS) versions 1.0 [RFC2246] and 1.1 [RFC4346] and moves these documents to the historic state. These versions lack support for current and recommended cipher suites, and various government and industry profiiles of applications using TLS now mandate avoiding these old TLS versions. TLSv1.2 has been the recommended version for IETF protocols since 2008, providing sufficient time to transition away from older versions. Products having to support older versions increase the attack surface unnecessarily and increase opportunities for misconfigurations. Supporting these older versions also requires additional effort for library and product maintenance. This document updates the backward compatibility sections of TLS RFCs [[list TBD]] to prohibit fallback to TLSv1.0 and TLSv1.1. This document also updates RFC 7525.


Kathleen Moriarty
Stephen Farrell

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)