Securing GTP and SCTP Traffic
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VRF support with SCTP (MX Series)—Starting in Junos OS Release 23.1R1, we support virtual routing and forwarding (VRF) for SCTP associations. You can use this feature to manage remote IP addresses. When an SCTP association is established over a VRF instance, the kernel must consider an additional parameter—the VRF ID—in addition to the traditional 4-tuple (source IP, source port, destination IP, destination port) when searching for unique associations.
[See SCTP Support for Virtual Routing and Forwarding (VRF)].