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Security Overview

Security Overview. System protection requirements areas Types of information protection Information Architecture dimensions Public Key Infrastructure (PKI). Information Protection Requirements. Confidentiality Protect from unauthorized disclosure Integrity

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Security Overview

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  1. Security Overview • System protection requirements areas • Types of information protection • Information Architecture dimensions • Public Key Infrastructure (PKI)

  2. Information Protection Requirements • Confidentiality • Protect from unauthorized disclosure • Integrity • Protect from unauthorized modification • Availability • Reliable/timely access to required resources • Authenticity • Ability to determine authorized source • Non-repudiation • Non-forgeable proof of data originator’s identity and data receipt

  3. Types of Information Protection • Encryption • Access control • User identification and authentication • Malicious content detection (viruses) • Audits, including real-time intrusion-detection • Physical Security

  4. Information Architecture Dimensions • Information System • Unauthorized intrusion • Denial of service • Information Domain • Users must have freedom of movement within their authorized spheres • Information Content • In-transit • At rest

  5. PKIPublic Key Infrastructure • Generation of digital certificates • Electronic proof of identity • Issuance of Certificate Revocation Lists (CRLs) • Directories that serve certificates and CRLs

  6. PKI Terms • Certificate Authority (CA): Trusted agent that signs and issues digital certificate • Sets rules for use, • Publishes CRLs, • Posts to directory server • Registration Authority (RA): Verifies person’s identity, passes on to CA

  7. Defense Messaging System • PKI by itself is considered medium grade security assurance • DMS involves PKI with modifications and additions • DMS is considered “high grade” assurance • Includes detailed policies and custom software • http://www.disa.mil/D2/dms/

  8. Further reading • DON CIO Information Technology Standards Guidance (1999)– Chapter 3 • http://www.doncio.navy.mil/training/ools/itsg/chapter3.html • DoD Computer Emergency Response Team (CERT) • http://199.211.123.12/

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