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The Juniper EX switch must be configured to enable Storm Control on all host-facing access interfaces.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-253962JUEX-L2-000150SV-253962r843919_ruleCCI-000366low
Description
A traffic storm occurs when packets flood a LAN, creating excessive traffic and degrading network performance. Traffic storm control prevents network disruption by suppressing ingress traffic when the number of packets reaches configured threshold levels. Traffic storm control monitors ingress traffic levels on a port and drops traffic when the number of packets reaches the configured threshold level during any one-second interval.
STIGDate
Juniper EX Series Switches Layer 2 Switch Security Technical Implementation Guide2026-06-03

Related Frameworks

1 mapping across 5 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (8) 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.

CFG-01Configuration Management Program
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
MON-01Continuous Monitoring
1.00
MON-01.7File Integrity Monitoring (FIM)
1.00
CFG-02Secure Baseline Configurations
0.50
CFG-02.7Approved Configuration Deviations
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (100) 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-12Session Termination
1.00
AC-16(1)Dynamic Attribute Association
1.00
AC-17(1)Monitoring and Control
1.00
AC-2Account Management
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(11)Usage Conditions
1.00
AC-2(3)Disable Accounts
1.00
AC-2(4)Automated Audit Actions
1.00
AC-24(1)Transmit Access Authorization Information
1.00
AC-25Reference Monitor
1.00

+90 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (2) 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.

3.4.1
1.00
3.4.2
1.00
CCI1 mapping
CCI-000366
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (5) 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
PR.PS-01
1.00
PR.DS-10
0.50
PR.PSPlatform Security
0.50
PR.PS-05
0.50

Who does this work

10 NICE work roles and 9 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-253962r843919_chk)

Review the switch configuration to verify that storm control is enabled on host-facing access interfaces. Verify storm control profiles at [edit forwarding-options storm-control-profiles] with an appropriate bandwidth value (actual bandwidth value or a percentage). By default, ELS versions of Junos enable storm control with an 80 percent of bandwidth value, but permit setting different values as either an absolute level or a percentage of available bandwidth. Note: Although percentage of bandwidth remains supported, it is deprecated and subject to removal. Therefore, an absolute level should be used. Threshold values must be configured appropriately for the target network. Verify the default storm control profile or a custom profile with appropriate bandwidth percentage or level. [edit forwarding-options] storm-control-profiles profile-percent { all { bandwidth-percentage (1..100); } action-shutdown; } storm-control-profiles profile-level { all { bandwidth-level (100..100000000 kbps); } action-shutdown; } Note: Storm control profiles are created with the hierarchy "all" but support removing specific traffic types using the "no-<traffic type>" keyword. The currently supported exclusions: no-broadcast Disable broadcast storm control no-multicast Disable multicast storm control no-registered-multicast Disable registered multicast storm control no-unknown-unicast Disable unknown unicast storm control no-unregistered-multicast Disable unregistered multicast storm control If excluding traffic, verify at least broadcast storm control is enabled. Verify that storm control profiles are applied to layer 2 host-facing access interfaces. [edit interfaces] <interface name> { unit 0 { family ethernet-switching { storm-control <profile name>; recovery-timeout (10..3600 seconds); } } } Note: If a recovery-timeout is not specified, and the storm control profile enforces action-shutdown, affected interfaces are disabled until manually enabled by an authorized administrator. If storm control is not enabled on all host-facing access interfaces, this is a finding.

Fix Text (F-57365r843918_fix)

Configure storm control on each host-facing access interface. set forwarding-options storm-control-profiles profile-percent all bandwidth-percentage (1..100) set forwarding-options storm-control-profiles profile-level all bandwidth-level (100..100000000 kbps) set interfaces <interface name> unit 0 family ethernet-switching storm-control <profile name> set interfaces <interface name> unit 0 family ethernet-switching recovery-timeout (10..3600 seconds)