Detections
Analytics
JUEX-L2-000210 - The Juniper EX switch must be configured to prune the default VLAN from all trunked interfaces that do not require it.
Information
All unassigned interfaces are placed into the default VLAN and devices connected to enabled, but unassigned interfaces can communicate within that VLAN. Although the default VLAN is not automatically assigned to any trunked interface, if the default VLAN must be trunked or a misconfigured trunk unintentionally includes the default VLAN, unauthorized devices connected to enabled but unassigned access interfaces could gain network connectivity beyond the local switch.NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.
Solution
Remove unnecessary VLANs from trunked interfaces.delete interfaces <trunked interface name> unit 0 family ethernet-switching vlan members <default | other unnecessary VLAN name>
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Juniper_EX_Switches_Y26M07_STIG.zip
Item Details
Category: CONFIGURATION MANAGEMENT
References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-253968r843937_rule, STIG-ID|JUEX-L2-000210, Vuln-ID|V-253968
Plugin: Juniper
Control ID: 867ed26503c46975e054f03ba3dd209f2bc692a4cf09631cf38481ceb7c2348c