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The Session Border Controller (SBC) must drop all SIP and AS-SIP packets except those secured with TLS.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-259932SRG-VOIP-000520SV-259932r948778_ruleCCI-001548medium
Description
DISN NIPRNet IPVS PMO and the Unified Capabilities Requirements (UCR) require all session signaling across the DISN WAN and between the Local Session Controller (LSC) and EBC to be secured with TLS. The standard IANA assigned IP port for SIP protected by TLS (SIP-TLS) is 5061. DOD PPSM requires that protocols traversing the DISN and DOD enclave boundaries use the standard IP ports for the specific protocol. Because AS-SIP is a standardized extension of the SIP protocol and AS-SIP must be protected by TLS, AS-SIP-TLS must use IP port 5061. The VVoIP system may allow SIP and SRTP traffic encrypted and encapsulated using TLS on port 443 from cloud service providers.
STIGDate
Enterprise Voice, Video, and Messaging Policy Security Requirements Guide2025-12-23

Related Frameworks

1 mapping across 5 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (17) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AST-04Network Diagrams & Data Flow Diagrams (DFDs)
1.00
AST-04.2Control Applicability Boundary Graphical Representation
1.00
CFG-02Secure Baseline Configurations
1.00
CRY-01Use of Cryptographic Controls
1.00
DCH-01Data Protection
1.00
DCH-19Geographic Location of Data
1.00
END-01Endpoint Device Management (EDM)
1.00
END-04Malicious Code Protection (Anti-Malware)
1.00
END-06Endpoint File Integrity Monitoring (FIM)
1.00
IAC-21Least Privilege
1.00

+7 more (top 10 by confidence shown)

NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-4Information Flow Enforcement
1.00
NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.1.3
1.00
CCI1 mapping
CCI-001548
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (4) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

DE.CM-09
1.00
ID.AM-03
1.00
PR.DS-10
1.00
PR.IR-01
1.00

Who does this work

18 NICE work roles and 10 EC-Council certifications.

This is an inference across published mappings, not a single claim by anyone. This check maps to a control, which maps to a Cybersecurity Framework outcome, which NIST assigns to the work roles below. EC-Council separately maps its certifications to those same roles.

A certification prepares someone for a role. It is not evidence that a holder is qualified, and neither NIST nor EC-Council has stated that any certification here addresses this check.

Work-role assignments published by NIST (NICE Framework Components 2.2.0 and the CSF 2.0 OLIR crosswalk). Certification mappings published by EC-Council.

Details

Check Text (C-259932r948778_chk)

Verify the DISN NIPRNet IPVS SBC is configured to drop the following signaling packets: - SIP packets arriving on IP port 5060 or 5061. - SIP packets arriving on IP port 443 not secured with TLS. - AS-SIP packets arriving on IP port 5060. - AS-SIP packets arriving on IP port 5061 not secured with TLS. If all SIP and AS-SIP packets are not dropped, except AS-SIP packets secured with TLS arriving on IP Port 5061 and SIP packets secured with TLS arriving on IP Port 443 secured with TLS, this is a finding. NOTE: The VVoIP system may allow SIP and SRTP traffic encrypted and encapsulated on port 443 from cloud service providers.

Fix Text (F-63570r946716_fix)

Ensure the DISN NIPRNet IPVS SBC is configured to drop the following signaling packets: - SIP packets arriving on IP port 5060 or 5061. - SIP packets arriving on IP port 443 not secured with TLS. - AS-SIP packets arriving on IP port 5060. - AS-SIP packets arriving on IP port 5061 not secured with TLS. NOTE: The VVoIP system may allow SIP and SRTP traffic encrypted and encapsulated on port 443 from Cloud service providers.