appn Nn Tg Security

This static characteristic indicates the level of security protection. The security values are architecturally defined to provide continuity across all networks. Currently, security is encoded as one of the following seven values: guardedRadiation - guarded conduit containing the transmission medium; protected against physical and radiation tapping. encrypted - link level encryption is provided unknown - has not been determined guardedConduit - guarded conduit; protected against physical tapping secureConduit - secure conduit, not guarded; e.g. pressurized pipe undergroundCable - underground cable located in a secure country publicSwitchedNetwork - public switched network; secure in the sense that there is no predetermined route that traffic will take nonSecure - all else, e.g. satellite-connected, located in a nonsecure country.