text: Chapter 1
  baseline security of the network. COMSEC secures network transport media and classified terminal devices.
  Signal elements protect the network through—
  * Cybersecurity.
  * COMSEC.
  * Electronic counter-countermeasures (anti-jamming techniques).
  SURVIVABILITY
  1-110. Survivable networks result from techniques such as dispersal of key facilities, redundant
  communications nodes, or a combination of techniques necessary for the physical and electrical protection
  of networks and critical infrastructure. While it is not practical or economically feasible to make all networks
  or elements of a system equally survivable, the networks and systems that enable command and control need
  protection commensurate with the survivability requirements of the associated command post. Since the
  Army network is a key command and control enabler, enemies consider it a key target for lethal and nonlethal
  fires.
  SUSTAINABILITY
  1-111. Sustainable networks provide support during any type of operation, regardless of its duration. This
  requires the economical design and employment of networks without sacrificing operational capability or
  survivability. Examples that might improve system sustainability include—
  * Consolidating functionality of similar facilities.
  * Adherence to joint-approved architectures.
  * Integrating special purpose and dedicated networks, when possible, into the joint portion of the
  DOD network.
  * Maximum use of DOD-wide common user services.
  * Judicious use of commercial services to augment military capabilities.
  SHARED NETWORKS
  1-112. Shared networks and services allow the mutual use of information services and communications
  capabilities among unified action partners at all echelons. Shared networks enable collaboration, rapid
  dissemination of intelligence and information, and the ability to project decisions based on common
  situational understanding. Signal elements provide shared networking capabilities by implementing—
  * DOD-wide common standards—common cybersecurity policies and system configurations to
  enhance interoperability.
  * Cybersecurity reciprocity—sharing security authorization packages and agreeing to accept other
  Services’ test and assessment results and authorization.
  * Mission partner environment—secure networking environment for multinational collaboration.
  NETWORK SITUATIONAL AWARENESS
  1-113. Comprehensive network situational awareness allows commanders and their staffs to receive,
  correlate, and display an accurate representation of systems and networks. A clear visual representation of
  the network allows near real-time assessment of operational impacts and helps staffs identify key terrain in
  cyberspace.
  1-114. Observation of the intensity of network activity, traffic load, and data throughput yields network
  situational understanding to enable dynamic rerouting of priority traffic and services and may provide
  indications of cyberspace or electronic attack. Situational awareness allows commanders and signal elements
  to—
  * Monitor, protect, and prioritize their network assets.
  * Assess the operational impact of network disruptions.
  * Respond to network outages or attacks.