Check: SRG-APP-000474-DNS-000073
Domain Name System (DNS) SRG:
SRG-APP-000474-DNS-000073
(in versions v3 r2 through v2 r4)
Title
The DNS server implementation must log the event and notify the system administrator when anomalies in the operation of the signed zone transfers are discovered. (Cat II impact)
Discussion
Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Security functionality includes, but is not limited to, establishing system accounts, configuring access authorizations (i.e., permissions, privileges), setting events to be audited, and setting intrusion detection parameters. Notifications provided by information systems include messages to local computer consoles, and/or hardware indications, such as lights. If anomalies are not acted upon, security functions may fail to secure the system. The DNS server does not have the capability of shutting down or restarting the information system. The DNS server can be configured to generate audit records when anomalies are discovered, and the OS/NDM can then trigger notification messages to the system administrator based on the presence of those audit records.
Check Content
Review the DNS server implementation configuration to determine if the DNS server logs the event and notifies the system administrator when anomalies in the operation of the signed zone transfers are discovered. If the DNS server implementation does not log the event and notify the system administrator when anomalies in the operation of the signed zone transfers are discovered, this is a finding.
Fix Text
Configure the DNS server to log the event and notify the system administrator when anomalies in the operation of the signed zone transfers are discovered.
Additional Identifiers
Rule ID: SV-205223r879845_rule
Vulnerability ID: V-205223
Group Title: SRG-APP-000474
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-002702 |
The information system shuts the information system down, restarts the information system, and/or initiates organization-defined alternative action(s) when anomalies in the operation of the organization-defined security functions are discovered. |
Controls
Number | Title |
---|---|
SI-6 |
Security Function Verification |