The Arista router must be configured to have all inactive interfaces disabled.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-256001 | ARST-RT-000150 | SV-256001r882345_rule | CCI-001414 | low |
| Description | ||||
| An inactive interface is rarely monitored or controlled and may expose a network to an undetected attack on that interface. Unauthorized personnel with access to the communication facility could gain access to a router by connecting to a configured interface that is not in use. If an interface is no longer used, the configuration must be deleted and the interface disabled. For sub-interfaces, delete sub-interfaces that are on inactive interfaces and delete sub-interfaces that are themselves inactive. If the sub-interface is no longer necessary for authorized communications, it must be deleted. | ||||
| STIG | Date | |||
| Arista MLS EOS 4.X Router Security Technical Implementation Guide | 2025-02-20 | |||
Related Frameworks
3 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
AC-4
1.00
- DISA · V2R2 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1711 mapping
3.1.3
1.00
- DISA · V2R2 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
CCI1 mapping
CCI-001414
1.00
- DISA · V2R2 · disa_xccdf · related
Details
Check Text (C-256001r882345_chk)
Review the Arista router configuration.
Verify the interfaces and sub-interfaces execute the commands "show ip interface brief" and "show interface status".
Example of a disabled interface:
interface Ethernet 8-10
description The interface is administratively shutdown
shutdown
If an interface is not being used but is configured or enabled, this is a finding.
Fix Text (F-59620r882344_fix)
Delete inactive sub-interfaces and disable and delete the configuration of any inactive ports on the router.
Deleting the sub-interface:
router(config)#no interface Ethernet8.100
Disabling the interface:
router(config)#interface Ethernet 8-10
router(config-if-Et8-10)#shutdown
Resetting the interface to the default-configuration:
router(config)#default interface Ethernet 8