The network element’s OOBM interface must be configured with an OOBM network address.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-17821	NET0991	SV-20206r2_rule		Medium

Description
The OOBM access switch will connect to the management interface of the managed network elements. The management interface of the managed network element will be directly connected to the OOBM network. An OOBM interface does not forward transit traffic; thereby, providing complete separation of production and management traffic. Since all management traffic is immediately forwarded into the management network, it is not exposed to possible tampering. The separation also ensures that congestion or failures in the managed network do not affect the management of the device. If the OOBM interface does not have an IP address from the managed network address space, it will not have reachability from the NOC using scalable and normal control plane and forwarding mechanisms.

Description

The OOBM access switch will connect to the management interface of the managed network elements. The management interface of the managed network element will be directly connected to the OOBM network. An OOBM interface does not forward transit traffic; thereby, providing complete separation of production and management traffic. Since all management traffic is immediately forwarded into the management network, it is not exposed to possible tampering. The separation also ensures that congestion or failures in the managed network do not affect the management of the device. If the OOBM interface does not have an IP address from the managed network address space, it will not have reachability from the NOC using scalable and normal control plane and forwarding mechanisms.

STIG	Date
Perimeter Router Security Technical Implementation Guide Juniper	2016-12-23

Details

Check Text ( C-22336r2_chk )
After determining which interface is connected to the OOBM access switch, review the managed device configuration and verify that the interface has been assigned an address from the local management address block. In this example, that is 10.1.1.0/24. interfaces { fxp0 { description “link to OOBM access switch” unit 0 { family inet { address 10.1.1.22/24; } } }

Fix Text (F-17736r2_fix)
Configure the OOB management interface with an IP address from the address space belonging to the OOBM network.