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IETF · RFC · RFC9109

RFC9109 · Network Time Protocol Version 4: Port Randomization

Network Time Protocol Version 4: Port Randomization

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.

Официальная английская аннотация

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.

Связи документа

updates: RFC5905

Официальный источник · 2021-08-01

Полные импортированные сведения карточки
{
  "id": "RFC9109",
  "number": 9109,
  "title_en": "Network Time Protocol Version 4: Port Randomization",
  "title_ru": "",
  "summary_ru": "",
  "purpose_ru": "",
  "use_ru": "",
  "full_translation_path": "",
  "full_translation_checked_at": "",
  "full_translation_source_sha256": "",
  "architect_note_ru": "",
  "topics_ru": [],
  "translation_state": "not_prepared",
  "verification_level": "not_prepared",
  "verification_level_ru": "Русская выжимка не подготовлена",
  "verification_note_ru": "",
  "abstract_en": "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.",
  "authors": [
    "F. Gont",
    "G. Gont",
    "M. Lichvar"
  ],
  "organizations": [],
  "publication_date": "2021-08-01",
  "current_status": "PROPOSED STANDARD",
  "current_status_ru": "Предлагаемый стандарт",
  "publication_status": "PROPOSED STANDARD",
  "publication_status_ru": "Предлагаемый стандарт",
  "lifecycle": "active",
  "lifecycle_ru": "Действующий",
  "stream": "IETF",
  "stream_ru": "IETF",
  "area": "int",
  "area_ru": "Интернет",
  "working_group": "ntp",
  "source_draft": "draft-ietf-ntp-port-randomization-08",
  "page_count": 9,
  "doi": "10.17487/RFC9109",
  "keywords": [
    "security",
    "transport protocols"
  ],
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  ],
  "relations": {
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    "txt": "https://www.rfc-editor.org/rfc/rfc9109.txt",
    "datatracker": "https://datatracker.ietf.org/doc/rfc9109/"
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}