An architectural approach to TMN security

The introduction of Common Channel Signalling, CCS, and Telecommunications Management Network [1], TMN, creates a new security situation in the public telecommunication area Earlier, public exchanges were managed individually, and to some extent manual intervention locally at the switch was the only way to intervene with the switch's operation. CCS and TMN create new and powerful possibilities for network management, because they enable large portions of the network to be diagnosed, reconfigured or simply put out of operation by simple commands issued at computer terminals in the management network.