The Cisco router must produce audit records containing information to establish where the events occurred.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-216528	CISC-ND-000290	SV-216528r929028_rule		Medium

Description
In order to compile an accurate risk assessment and provide forensic analysis, it is essential for security personnel to know where events occurred, such as device hardware components, device software modules, session identifiers, filenames, host names, and functionality. Associating information about where the event occurred within the network device provides a means of investigating an attack; recognizing resource utilization or capacity thresholds; or identifying an improperly configured device.

Description

In order to compile an accurate risk assessment and provide forensic analysis, it is essential for security personnel to know where events occurred, such as device hardware components, device software modules, session identifiers, filenames, host names, and functionality. Associating information about where the event occurred within the network device provides a means of investigating an attack; recognizing resource utilization or capacity thresholds; or identifying an improperly configured device.

STIG	Date
Cisco IOS XR Router NDM Security Technical Implementation Guide	2023-11-28

Details

Check Text ( C-17763r929027_chk )
Review the deny statements in all interface ACLs to determine if the log-input parameter has been configured as shown in the example below. Note: log-input can only apply to interface bound ACLs. ipv4 access-list BLOCK_INBOUND 10 deny icmp any any log-input If the router is not configured with the log-input parameter after any deny statements to note where packets have been dropped via an ACL, this is a finding.

Check Text ( C-17763r929027_chk )

Review the deny statements in all interface ACLs to determine if the log-input parameter has been configured as shown in the example below.
Note: log-input can only apply to interface bound ACLs.

ipv4 access-list BLOCK_INBOUND
10 deny icmp any any log-input

If the router is not configured with the log-input parameter after any deny statements to note where packets have been dropped via an ACL, this is a finding.

Fix Text (F-17760r288271_fix)
Configure the log-input parameter after any deny statements to provide the location as to where packets have been dropped via an ACL. RP/0/0/CPU0:R3(config)#ipv4 access-list BLOCK_INBOUND RP/0/0/CPU0:R3(config-ipv4-acl)#deny icmp any any log-input