The network element must ensure all encrypted traffic is visible to network monitoring tools.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-34227	SRG-NET-000262-DNS-NA	SV-44705r1_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. Regardless of direction, all encrypted traffic must be decrypted prior to reaching the sensor or firewall so all traffic can be monitored. Network monitoring 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. Regardless of direction, all encrypted traffic must be decrypted prior to reaching the sensor or firewall so all traffic can be monitored. Network monitoring is not a function of DNS.

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

Details

Check Text ( C-42210r1_chk )
This is not a function of DNS.

Fix Text (F-38158r1_fix)
This requirement is NA for DNS. No fix required.