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DDST DNS Analytics for Splunk

The DDST DNS Analytics for Splunk provides a high-level visibility of DNS servers hosted on Linux logs. The goal of the DNS application is permit the administrator or security analyst to quickly see what DNS requests are being used by their users or systems. The DNS application will be updated to help identify bad DNS requests from malware or malicious users.

Splunk for DNS Release Notes

The Splunk for DNS will provide you with a dashboard that will provides you with summary of DNS actives in your network, assuming you have a well-defined DNS infrastructure.



  • 1 or more Bind, version 8 or 9, servers installed on your preferred Linux server.
  • A syslog client/forwarder (Syslog-NG).
  • Splunk has a data source configured for receiving Syslog data (UDP/TCP) with the source type set to "syslog".

The installation guidance is one way to get DNS data into Splunk. You can use other methods, as long as the data source type is set to "syslog".
1. Install the Bind server components on your preferred Linux host
2. Install the Syslog-NG, or your preferred syslog forwarder.( ) on the host Bind server.
3. Configure, see below.


  1. Configure Bind:
    • Configure Bind using the configuration sample below.
  2. Configure Syslog-NG to process the log entries in the bind log file:
    • Create a source for Syslog-NG to process, using the Bind log file defined in the bind config.
    • Define a destination for Syslog to send log data over UDP or TCP 514. The destination should be your Splunk instance.
    • Create a Syslog-NG target. This tells Syslog-NG to process the defined source (in section a) and send it to the define destination. See the Syslog configuration sample below.
  3. Restart services
    • Restart Syslog-NG
    • Restart Bind
  4. Verify that data is being logged
    • Check the bind log file to see if query and resolver data is being logged.
    • Check that Splunk is receiving syslog data from the host Bind server. You should see a named in the search type on the Search summary.
  5. View the Splunk for DNS application

Bind Configuration Example

options {
forwarders {;;
querylog yes;
zone "." {
type hint;
file "/etc/db.cache";
channel simple_log {
file "/var/log/named/bind.log";
severity debug;
print-category yes;
print-severity yes;
print-time yes;
category client {simple_log; };
category queries {simple_log; };
category default {simple_log; };
category security {simple_log; };

Syslog-NG Configuration Example

destination splunk {
udp(xxx.xxx.xxx.xxx);#Replace xxx with the IP of your Splunk syslog listener.
source named {
file("/var/log/named/bind.log" log_prefix("BIND-DNS"));

log {

Release Notes

Version 2.2.3
Nov. 30, 2016

Correction to the prop.conf file.


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