![]() ![]() In some cases, there may be 10-20 entries with the same timestamp (to the second) in the DNS log. Right-click DNS-Server, point to View, and then click Show Analytic and Debug Logs. In Event Viewer, navigate to Applications and Services Logs\Microsoft\Windows\DNS-Server. I've confirmed that the pattern is the same between data that does and doesn't correctly get parsed. Type eventvwr.msc at an elevated command prompt and press ENTER to open Event Viewer. Then, I ended up basically modifying an app initially built by a Splunk SME, yshabano. ![]() In this scenario, I know the data is getting from Logstash to Elasticsearch because the message field in Kibana is populated with the entry from the DNS debug log. We recommend pulling an Online Report for the monitoring device, and on the Log tab, use the built-in DNS Trace option. Heres the final config: First, on your DNS servers, enable the following buttons. List of FQDNs resolved by each DNS client. The result is two tables: Distinct list of DNS clients IPs. However, roughly 1/3 of the time, the data doesn't appear to get parsed and the fields aren't visible in Kibana. It takes one parameter path to the log file, reads and proceses the file and then displays stats about recieved DNS requests. Most of the time, the data gets parsed correctly and fields are populated and visible in Kibana. I'm using grok in Logstash (7.8.0) to parse data from a Windows Server (2019) DNS debug log (sent via filebeat) using the statement below.
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