The reader is shown what a comprehensive and platform-independent solution for implementing multi-party security in communication networks can look like. The included CD features a prototype written in Java that supports a playful familiarization with the configuration of protection mechanisms for multi-party security. It focuses on the targeted negotiation of security requirements among all parties involved and how conflicts arising from opposing requirements can be resolved or mitigated. The book describes the fundamentals of protection goals and the configuration and negotiation of security functionality.