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Network Time Protocol Version 4: Port Randomization
RFC 9109

Revision differences

Document history

Date By Action
2021-08-23
(System)
Received changes through RFC Editor sync (created alias RFC 9109, changed title to 'Network Time Protocol Version 4: Port Randomization', changed abstract to 'The …
Received changes through RFC Editor sync (created alias RFC 9109, changed title to 'Network Time Protocol Version 4: Port Randomization', changed abstract to 'The Network Time Protocol (NTP) 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.  However, in the case of NTP modes where the use of a well-known port is not required, employing such a well-known port unnecessarily facilitates the ability of attackers to perform blind/off-path attacks.  This document formally updates RFC 5905, recommending the use of transport-protocol ephemeral port randomization for those modes where use of the NTP well-known port is not required.', changed pages to 9, changed standardization level to Proposed Standard, changed state to RFC, added RFC published event at 2021-08-23, changed IESG state to RFC Published, created updates relation between draft-ietf-ntp-port-randomization and RFC 5905)
2021-08-23
(System) RFC published