- AAL
- ATM Adaption Layer
- AC
- Alternating Current
- Accreditation
- The formal declaration by a Designated Approving Authority (DAA) that a system is approved to operate in a particular security mode using a prescribed set of safeguards.
- ACM
- Advanced Cryptographic Module
- ACSE
- Access Control Service Element
- ACUS
- Area Common User System
- ADP
- Account Distribution Profiles
- AEHF
- Advanced Extremely High Frequency
- AES
- Advanced Encryption Standard
- AIM
- Advanced INFOSEC Machine
- AIMS
- Air Traffic Control Radar System (ATCRBS), Identification Friend or Foe (IFF), Mark XII/XIIA, Systems
- AIU
- Aircraft Interface Unit
- ALC
- Accounting Legend Code
- AMF
- Airborne, Maritime, Fixed
- ANSI
- American National Standards Institute
- AOC
- Air Operations Center (Air Force), a U.S. Government program
- AP/LPI
- Antijam/Low Probability of Intercept
- ARP
- Address Resolution Protocol
- AS SIP
- Assured Services SIP
- ASIC
- Application Specific Integrated Circuit
- ATDNET
- Advanced Technologies Demonstration Network
- ATM
- Asynchronous Transfer Mode
- AUI
- Attachment Unit Interface
- AVE
- Aerospace Vehicle Equipment
- AVNS
- Active Firefly Vector Set
- AVS
- Active Vector Set
- AWACS
- Airborne Warning and Control System
- AWIS
- Air Warrior Intercom System
- BACN
- Battlefield Airborne Communication Node
- BDI
- Black Digital Interface
- BFVS
- Benign FIREFLEY Vector Set
- BIS
- Battlefield Airborne Communication Node (BACN) IFDL Subsystem (BIS)
- BM System (Battle Management System)
- This program coordinates surveillance, detection, tracking, classification, engagement, and kill assessment functions and optimizes land-based, sea-based, and airborne sensors and commits the best land-, sea-, and air-based weapon systems.
- BMC2
- Battle Management Command and Control (Air Force), a U.S. Government program
- BNC
- Bayonet Neill-Concelman
- BPP
- Black Pre-Processor
- BPS
- Bits Per Second
- C&A
- Certification & Authority
- CA
- Command Authority
- CAC
- Common Access Card
- CAT
- Computer Adaptive Test
- CAW
- Certification Authority Workstation
- CBR
- Constant Bit Rate
- CBT
- Computer Based Training
- CBWFQ
- Class-based weighted fair queueing
- CCEB
- Combined Communications Electronic Board
- CCI
- Controlled Cryptographic Item
- CD
- Compact Disc
- CDMA
- Code Division Multiple Access
- CDS
- Cross Domain Solutions
- CE
- Consumer Electronics
- CEA
- Cryptographic Equipment Application
- Certification
- The comprehensive evaluation of the technical and non-technical security features of a system and other safeguards, made in support of the accreditation process, to establish the extent to which a particular design and implementation meets a set of specified security requirements.
- CI
- Capability Increments
- CIK
- Cryptographic Ignition Key
- CIK FLT
- Crypto Ignition Key Fault
- CISSP
- Certified Information Systems Security Professionals
- CISSP®
- Certified Information Systems Security Professional
- CIT
- Combined Interrogator Transponder
- CKG
- Combat Key Generator
- CKL
- Compromised Key List
- CL
- Circuit Location
- Classifications
- The United States Government uses four primary classifications to secure important information. These classifications are ranging from most secure to least: Top Secret, Secret, Confidential and Unclassified.
- CLP
- Cell Loss Priority
- CM (6000 or 5000)
- Configuration Manager
- CMCC
- Comsec Control Center
- CMI
- Cryptographic Modernization Initiative
- CMMI
- Capability Maturity Model-Integrated
- CNS
- Central Services Node
- COIs
- Communities of Interest
- COM
- Computer Operations Manual
- COMSEC
- Communications Security
- Connector
- Data Communication Equipment Connector
- CONOPS
- Concept of Operations
- Cont.
- Continued
- CONUS
- Continental United States
- COTS
- Commercial Off-The-Shelf
- CPSG
- Cryptologic Systems Group
- CRC
- Cyclic Redundancy Check
- CRI
- Controller Remote Interface
- CRL
- Certificate Revocation List
- CSA
- Canadian Standards Association
- CSC192
- Cell Security Card with OC-192 line card interface
- CSC48
- Cell Security Card with embedded OC-48 optics
- CSCLC
- Cell Security Card with FR3 line card interface
- CSL
- Core Security Library
- CSLA
- Communications Security Logistics Agency
- CSM
- COMSEC Module
- CSMA/CD
- Carrier Sense Multiple Access with Collision Detection
- CSS
- Central Security Services
- CT
- Cipher Text
- CTC
- COMSEC TRANSEC Computer
- CU
- Crypto Unit
- CXP
- Common Transponders
- DAA
- Designated Approving Authority
- DAC
- Discretionary Access Control
- DAR
- Data-at-Rest
- DAS
- Direct Attached Storage
- DB
- Database
- DB-9
- Data Bus with 9 pins
- DC
- Direct Current
- DCID
- Director of Central Intelligence Directive
- DDoS
- Distributed Denial of Service
- DECC
- Defense Enterprise Computing Center
- DEG
- Degrees
- DF
- Don't Fragment
- DHCP
- Dynamic Host Configuration Protocol
- DHCPV6
- Dynamic Host Configuration Protocol
- DHS
- Department of Homeland Security
- DI
- Digital Interrogator
- DIA
- U.S. Defense Intelligence Agency
- DIN
- Data Identification Number
- DISA
- U.S. Defense Information Systems Agency
- DISA NCES
- Defense Information Systems Agency Net-Centric Enterprise Services, a U.S. Government program
- DIT
- Data-in-Transit
- DMR
- Digital Modular Radio
- DOC
- Delivery Client Node
- DoD
- Department of Defense
- DoS
- Denial of Service
- DS
- Digital Signal
- DSCP
- Differentiated Services Code Point
- DSN
- Defense Switch Network
- DTD
- Data Transfer Device
- DTE
- Data Terminal Equipment
- DTU
- Desktop Unit
- DWDM
- Dense Wavelength Division Multiplexing
- ECP
- Engineering Change Proposal
- ECU
- End Cryptographic Unit
- EDM
- Engineering Development Model
- EEPROM
- Electrically-Erasable Programmable Read-Only Memory
- EFF
- Enhanced FIREFLY
- EIA
- Electronic Industries Alliance
- EK
- Exclusion Key
- EKMS
- Electronic Key Management System
- EKMS CF
- Electronic Key Management System Central Facility
- EKR
- Electronic Key Request
- EME
- Embedded Media Encryptor
- EMI
- Electro-magnetic Interference
- Encryptor (Voice)
- A device that works by first digitizing the conversation at the phone and then applying a cryptographic technique to the bit-stream. To decrypt, the correct encryption method and key must be used.
- ENET
- Ethernet
- EPLRS
- Enhanced Position Location Reporting System
- eSATA
- External Serial ATA
- ESD
- ElectroStatic Discharge
- ESP
- Encapsulating Security Payload
- EV-DO
- Evolution-Data Optimized
- F3
- Form, fit, and function
- FAB-T
- Family of Beyond Line of Sight Terminal
- FAC2T
- Family of Advanced Core Cryptographic Technologies
- FC
- Fibre Channel
- FCS
- Future Combat System
- FDDI
- Fiber Distributed Data Interface
- FF
- FIREFLY
- FF TEK
- FIREFLY Traditional Encryption Key
- FF VS
- FIREFLY Vector Set
- FFVVPI/VCI
- Firefly Vector, Virtual Path Identifier, Virtual Channel Identifier
- FI
- Foreign Interoperability
- FIPS (Federal Information Processing Standard)
- "Under the Information Technology Management Reform Act (Public Law 104-106), the Secretary of Commerce approves standards and guidelines that are developed by the National Institute of Standards and Technology (NIST) for Federal computer systems. These standards and guidelines are issued by NIST as Federal Information Processing Standards (FIPS) for use government-wide. NIST develops FIPS when there are compelling Federal government requirements such as for security and interoperability and there are no acceptable industry standards or solutions." (Source: http://www.itl.nist.gov/fipspubs/geninfo.htm#nist)
- FNBDT
- Future Narrow Band Digital Terminal
- FOUO
- For Official Use Only
- FPGA
- Field Programmable Gate Array
- FPL
- Fixed Packet Length
- FR3
- FASTLANE Release 3
- FR3.11
- FASTLANE Release 3.11
- FR3.2
- FASTLANE Release 3.2
- FRP
- Full Rate Production
- FTR
- Field Tamper Recovery
- G.H.O.S.T.
- General Dynamics High Assurance Open Scalable Technologies
- Gb/s or Gbps
- Gigabit per second
- GBSI
- Global Broadcast System Interface
- GCIC
- Global Cyberspace Integration Center
- GDS
- Generic Discovery Server
- GE
- Gigabit Ethernet
- GEM
- General Dynamics Encryptor Manager
- GEO
- Geosynchronous Earth Orbit
- GFC
- Generic Flow Control
- GIG
- Global Information Grid
- GIG-ES
- (Global Information Grid Enterprise Services): GIG Enterprise Services (GES) describes the aggregate of all services offered on the GIG [i.e. all community of interest (COI) services offered on the GIG, plus all the standard Core Enterprise Services (CES) that are available, to all users (human and machine)].
- Global System for Mobile Communication (GSM)
- A leading worldwide telecommunications technology that operates in more than 200 countries - with more than one billion subscribers around the globe. As the predominant cellular network for most of the world it's also the fastest growing cellular technology in the US. There are two major GSM service providers in the US, Cingular/AT&T Wireless and T-Mobile.
- GMT
- Greenwich Mean Time
- GOE
- Ground Operating Equipment
- GPS
- Global Positioning System
- GRE
- Genetic Routing Encapsalation
- GSA
- General Services Administration
- GSM
- Global System for Mobile Communications
- GSN
- Government Serial Number
- GUI
- Graphical User Interface