Port 384723GPP F1 Control Plane (F1-C)

SCTP endpoint for F1AP signaling between a 5G gNB Central Unit and Distributed Unit.

transport: sctp
in transit: cleartext
assignment: official
risk: 2/10
lookups: 0

also known as F1AP, F1-C

Technical Details

what runs on :38472

F1-C carries the 3GPP F1 Application Protocol (F1AP) over SCTP, conventionally on port 38472. After establishing an SCTP association, the CU and DU exchange F1AP messages encoded using ASN.1 aligned PER, beginning with procedures such as F1 Setup; signaling also supports DU configuration and UE-related control. F1-U user-plane traffic is separate and commonly uses GTP-U over UDP port 2152. SCTP and F1AP do not encrypt traffic by themselves; deployments rely on network-domain protections where required.

Security Information

exposure of :38472

risk score

2/ 10safe

routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.

network services averages 2.6 across 2,001 ports — this one sits 0.6 below.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

sctp

every listening transport is another surface to filter at the edge

security overview

This is specialized RAN control-plane traffic and should normally be reachable only between authorized CU and DU components on a protected mobile-network transport. Exposure could allow probing or disruption of control-plane services, and the protocol does not provide encryption by default; use appropriate network isolation and, where required by the deployment, IPsec or other network-domain security. It is not ordinarily an internet-facing service.

Record

iana registry entry

port: :38472
service: 3GPP F1 Control Plane (F1-C)
transport: SCTP
encryption: cleartext
assignment: iana registered
risk: 2/10safe
category: Network Services Mobile
usage: 5G RAN equipment uses this port for F1-C signaling between a gNB-CU and gNB-DU. Engineers typically encounter it on private mobile-network infrastructure, not as an internet-facing service.
lookups: 0rank 993
added: 2026-10-20
updated: 2026-10-20
references: IANA service name registry — port 38472

Something wrong?

This record is maintained by the engineers who use port 38472. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-10-20.

01edit any field on a page of its own
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edit this record →back to the registry

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risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :384723GPP F1 Control Plane (F1-C)

Technical Details

Security Information

Related Ports

Port 384723GPP F1 Control Plane (F1-C)