draft-ietf-ntp-data-minimization-01.txt   draft-ietf-ntp-data-minimization-02.txt 
Network Working Group D. Franke Network Working Group D. Franke
Internet-Draft Akamai Internet-Draft Akamai
Updates: 5905 (if approved) A. Malhotra Updates: 5905 (if approved) A. Malhotra
Intended status: Standards Track Boston University Intended status: Standards Track Boston University
Expires: January 28, 2018 July 27, 2017 Expires: January 1, 2019 June 30, 2018
NTP Client Data Minimization NTP Client Data Minimization
draft-ietf-ntp-data-minimization-01 draft-ietf-ntp-data-minimization-02
Abstract Abstract
This memo proposes backward-compatible updates to the Network Time This memo proposes backward-compatible updates to the Network Time
Protocol to strip unnecessary identifying information from client Protocol to strip unnecessary identifying information from client
requests and to improve resilience against blind spoofing of requests and to improve resilience against blind spoofing of
unauthenticated server responses. unauthenticated server responses.
Status of This Memo Status of This Memo
This Internet-Draft is submitted in full conformance with the This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79. provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
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Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on January 28, 2018. This Internet-Draft will expire on January 1, 2019.
Copyright Notice Copyright Notice
Copyright (c) 2017 IETF Trust and the persons identified as the Copyright (c) 2018 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
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include Simplified BSD License text as described in Section 4.e of include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License. described in the Simplified BSD License.
Table of Contents Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
skipping to change at page 5, line 20 skipping to change at page 5, line 20
OpenNTPD OpenNTPD
7. References 7. References
7.1. Normative References 7.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, Requirement Levels", BCP 14, RFC 2119,
DOI 10.17487/RFC2119, March 1997, DOI 10.17487/RFC2119, March 1997,
<http://www.rfc-editor.org/info/rfc2119>. <https://www.rfc-editor.org/info/rfc2119>.
[RFC5905] Mills, D., Martin, J., Ed., Burbank, J., and W. Kasch, [RFC5905] Mills, D., Martin, J., Ed., Burbank, J., and W. Kasch,
"Network Time Protocol Version 4: Protocol and Algorithms "Network Time Protocol Version 4: Protocol and Algorithms
Specification", RFC 5905, DOI 10.17487/RFC5905, June 2010, Specification", RFC 5905, DOI 10.17487/RFC5905, June 2010,
<http://www.rfc-editor.org/info/rfc5905>. <https://www.rfc-editor.org/info/rfc5905>.
7.2. Informative References 7.2. Informative References
[RFC4086] Eastlake 3rd, D., Schiller, J., and S. Crocker, [RFC4086] Eastlake 3rd, D., Schiller, J., and S. Crocker,
"Randomness Requirements for Security", BCP 106, RFC 4086, "Randomness Requirements for Security", BCP 106, RFC 4086,
DOI 10.17487/RFC4086, June 2005, DOI 10.17487/RFC4086, June 2005,
<http://www.rfc-editor.org/info/rfc4086>. <https://www.rfc-editor.org/info/rfc4086>.
[RFC6528] Gont, F. and S. Bellovin, "Defending against Sequence [RFC6528] Gont, F. and S. Bellovin, "Defending against Sequence
Number Attacks", RFC 6528, DOI 10.17487/RFC6528, February Number Attacks", RFC 6528, DOI 10.17487/RFC6528, February
2012, <http://www.rfc-editor.org/info/rfc6528>. 2012, <https://www.rfc-editor.org/info/rfc6528>.
[RFC6973] Cooper, A., Tschofenig, H., Aboba, B., Peterson, J., [RFC6973] Cooper, A., Tschofenig, H., Aboba, B., Peterson, J.,
Morris, J., Hansen, M., and R. Smith, "Privacy Morris, J., Hansen, M., and R. Smith, "Privacy
Considerations for Internet Protocols", RFC 6973, Considerations for Internet Protocols", RFC 6973,
DOI 10.17487/RFC6973, July 2013, DOI 10.17487/RFC6973, July 2013,
<http://www.rfc-editor.org/info/rfc6973>. <https://www.rfc-editor.org/info/rfc6973>.
7.3. URIs 7.3. URIs
[1] http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/ntpd/ [1] http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/ntpd/
client.c?rev=1.1 client.c?rev=1.1
Appendix A. Acknowledgements Appendix A. Acknowledgements
The authors would like to gratefully acknowledge Henning Brauer for The authors would like to gratefully acknowledge Henning Brauer for
pioneering NTP data minimization techniques as early as June 2004 [1] pioneering NTP data minimization techniques as early as June 2004 [1]
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