ETSI has published TS 103 523-1, the first part of the Middlebox Security Protocol (MSP) series, which establishes a new security framework to enable secure and functional operation of next-generation middleboxes in 5G and NFV environments. The standard is built on four core principles: Data Protection against attackers, Transparency regarding data access, Access Control for endpoints, and Good Citizen practices to prevent DDoS vectors. By defining specific MSP Template Requirements, the framework provides a flexible and consistent threat model for developers and implementors to address diverse use cases ranging from encrypted traffic defense to regulatory compliance. This specification ensures middleboxes can perform vital network functions while maintaining high levels of security, privacy, and trust across complex network architectures.
Keywords: middlebox security, encrypted traffic defense, access control, DDoS prevention, ETSI TS 103 523-1