Stream Control Transmission Protocol (SCTP), defined in RFC 4960, is a reliable, message-based transport protocol. Mobile networks widely use SCTP to transport signaling traffic on various interfaces, such as S1-MME, S6a, and X2, and to send multiple streams of signaling, voice, and other data simultaneously. Configure SCTP security on Palo Alto Networks^® next-generation firewalls to inspect, validate, and filter your SCTP traffic.