The network element must take an organization defined list of least-disruptive actions to terminate suspicious events.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-34225	SRG-NET-000260-DNS-NA	SV-44702r1_rule		Medium

Description
Intrusion Detection System (IDS) and Intrusion Prevention System (IPS) devices should be deployed at strategic locations within the network. At a minimum, they should be deployed within the DMZ and behind the firewall. It is important to not only monitor traffic entering the enclave but also leaving. Placing an IDS behind the firewall will provide a clear analysis of what type of traffic and potential attacks are passing through the firewall. Monitoring outbound traffic enables the network operator to detect an attack towards another network with the local enclave as the base. When a compromise, potential compromise, or breach has been discovered by the intrusion detection system, the network element must take action to thwart the attack using methods creating the least disruption to network availability. Termination of suspicious events is not a function of DNS.

Description

Intrusion Detection System (IDS) and Intrusion Prevention System (IPS) devices should be deployed at strategic locations within the network. At a minimum, they should be deployed within the DMZ and behind the firewall. It is important to not only monitor traffic entering the enclave but also leaving. Placing an IDS behind the firewall will provide a clear analysis of what type of traffic and potential attacks are passing through the firewall. Monitoring outbound traffic enables the network operator to detect an attack towards another network with the local enclave as the base. When a compromise, potential compromise, or breach has been discovered by the intrusion detection system, the network element must take action to thwart the attack using methods creating the least disruption to network availability. Termination of suspicious events is not a function of DNS.

STIG	Date
Domain Name System (DNS) Security Requirements Guide	2012-10-24

Details

Check Text ( C-42207r1_chk )
This is not a function of DNS.

Fix Text (F-38156r1_fix)
This requirement is NA for DNS. No fix required.