ETSI announced a new specification, ETSI TS 103 523-2: Transport Layer MSP (TLMSP), Part 2 of the Middlebox Security Protocol (MSP) series, which defines a protocol for varied (fine-grained) access control to communications traffic. This specification was developed by the ETSI Technical Committee CYBER. Middleboxes are vital in modern networks - from new 5G deployments, with ever-faster networks that need performance management, to resisting new cyberattacks with evolved threat defence that copes with encrypted traffic, to VPN provision. Network operators, service providers, users, enterprises, and small businesses require being granted varied (fine grained) permissions.
As more datagram network traffic is encrypted, the problems for cyber defence will grow. This intrusive "break-and-inspect" method, ignoring the desire for explicit authorization by endpoints, raises questions around security, privacy, and trust. ETSI TS 103 523-2, MSP Part 2 addresses this gap by specifying a protocol that allows fine-grained access and nuanced permissions for different portions of traffic, allowing middleboxes to perform their functions securely whilst keeping up with the rapid pace of technical development.