[Ntp] I-D Action: draft-ietf-ntp-port-randomization-08.txt
internet-drafts@ietf.org Fri, 11 June 2021 04:52 UTC
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Subject: [Ntp] I-D Action: draft-ietf-ntp-port-randomization-08.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Network Time Protocol WG of the IETF. Title : Port Randomization in the Network Time Protocol Version 4 Authors : Fernando Gont Guillermo Gont Miroslav Lichvar Filename : draft-ietf-ntp-port-randomization-08.txt Pages : 11 Date : 2021-06-10 Abstract: The Network Time Protocol can operate in several modes. Some of these modes are based on the receipt of unsolicited packets, and therefore require the use of a well-known port as the local port number. However, in the case of NTP modes where the use of a well- known port is not required, employing such well-known port unnecessarily facilitates the ability of attackers to perform blind/ off-path attacks. This document formally updates RFC5905, recommending the use of transport-protocol ephemeral port randomization for those modes where use of the NTP well-known port is not required. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-ntp-port-randomization/ There is also an htmlized version available at: https://datatracker.ietf.org/doc/html/draft-ietf-ntp-port-randomization-08 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-ntp-port-randomization-08 Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/
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