FAR and DFARS › DFARS Part 204: Administrative and Information Matters › Subpart 204.21
DFARS 204.2102 Prohibition.
The codified text (eCFR, as of 2026-10-02). Under the Revolutionary FAR Overhaul ↗, agencies follow class deviations with new text for many parts while the formal rules go through the Federal Register: check the solicitation and your contract's clauses, which rule.
In plain English
This DFARS section prohibits the contracting officer from buying, obtaining, extending, or renewing contracts for equipment, systems, or services that use covered defense telecommunications equipment or services as a substantial or essential component or critical technology, unless a waiver applies. It matters to contractors because it limits what products and services can be sold to the government under covered missions.
Applies to: Contracting officers procuring equipment, systems, or services for covered missions
Key terms: covered defense telecommunications equipment or services · covered missions · substantial or essential component · critical technology · waiver
Written by AI from this section's text. A guide, not legal advice: the text below rules.
The text
(a) Prohibited equipment, systems, or services. In addition to the prohibition at FAR 4.2102(a), unless the covered defense telecommunications equipment or services are subject to a waiver described in 204.2104, the contracting officer shall not procure or obtain, or extend or renew a contract (e.g., exercise an option) to procure or obtain, any equipment, system, or service to carry out covered missions that uses covered defense telecommunications equipment or services as a substantial or essential component of any system, or as critical technology as part of any system.
← 204.2101 Definitions. · 204.2103 Procedures. →
Rule changes for DFARS Part 204
- Defense Federal Acquisition Regulation Supplement: Assessing Contractor Implementation of Cybersecurity Requirements (DFARS Case 2019-D041) ↗ · final rule 2025-09-10 · effective 2025-11-10
- Defense Federal Acquisition Regulation Supplement: Inapplicability of Additional Defense-Unique Laws and Certain Non-Statutory DFARS Clauses to Commercial Item Contracts (DFARS Case 2018-D074) ↗ · final rule 2024-11-15 · effective 2024-11-25
- Defense Federal Acquisition Regulation Supplement; Technical Amendments ↗ · final rule 2024-09-26 · effective 2024-10-01
- Defense Federal Acquisition Regulation Supplement: Data Universal Numbering System to Unique Entity Identifier Transition (DFARS Case 2022-D023) ↗ · final rule 2024-09-26 · effective 2024-10-01
- Defense Federal Acquisition Regulation Supplement: Modification of Notification of Intent To Transport Supplies by Sea (DFARS Case 2020-D026) ↗ · final rule 2024-09-26 · effective 2024-10-01
- Defense Federal Acquisition Regulation Supplement: Assessing Contractor Implementation of Cybersecurity Requirements (DFARS Case 2019-D041) ↗ · proposed 2024-08-15 · comments due 2024-10-15
- Defense Federal Acquisition Regulation Supplement; Technical Amendments ↗ · final rule 2024-07-29 · effective 2024-07-29
- Defense Federal Acquisition Regulation Supplement: Modification of Notification of Intent To Transport Supplies by Sea (DFARS Case 2020-D026) ↗ · proposed 2024-03-26 · comments due 2024-05-28
Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Plain words for the terms: glossary.