Although similar behavior can be observed in the case of software malfunctions, the difference in numbers is usually significant and easy to spot.
One popular method of launching DDoS attacks involves using a compromised machine to produce a large volume of DNS queries to non-existent or invalid domains. Easily diagnose possible security breaches or software malfunctions In the case of an under-performing, unreachable, or unresponsive DNS server, you may also notice a significant increase in reported Timeout and ServFail(2) errors. Slower response times can be a sign of a stressed DNS server or network communication issues. Average query response time can be tracked and alerted on.
If your DNS server is facing performance issues, you may experience numerous errors and slower response times. Now let’s take a look at two possible use cases where AI-powered DNS tracking can be valuable. Also, all the metrics that are captured to track DNS requests or reported errors can be used to define custom events that you want to be alerted on if they occur. The Davis AI causation engine automatically detects and analyzes anomalies, such as under-performing DNS communication or a misconfigured DNS server, and provides you with all the relevant details instantly when such issues impact your applications or services.
Number of requests and orphaned responses.All DNS related metrics are available on each host overview page on the Network services tile, organized into two tabs which allow you to monitor the: Easily diagnose possible security breaches or software malfunctionsĮnsure high quality network traffic by tracking DNS requests out-of-the-boxĪs of today, Dynatrace constantly and automatically tracks DNS requests with zero additional configuration.This provides you with additional details in cases where such issues impact your applications or services, allowing you to: While our competitors only provide generic traffic monitoring without artificial intelligence, Dynatrace automatically analyzes DNS-related anomalies. To extend Dynatrace diagnostic visibility into network traffic, we’ve added out-of-the-box DNS request tracking to our infrastructure monitoring capabilities. With all the data collected and powered by our Davis® AI-driven causation engine, Dynatrace automatically identifies slowdowns in your applications and services and points you to their root cause. The Dynatrace Software Intelligence Platform gives you a complete Infrastructure Monitoring solution for the monitoring of cloud platforms and virtual infrastructure, along with log monitoring and AIOps. Unexpected RCODE (REFUSED) resolving '/A/IN': you ever received a call from a customer telling you that an application you’re providing is too slow? Applications and services are often slowed down by under-performing DNS communications or misconfigured DNS servers, which can result in frustrated customers uninstalling your application. Unexpected RCODE (SERVFAIL) resolving 'ns1-cle.bluebridgenetwork s.net/AAAA /IN': 76.10.196.5#53: 1 Time(s) So this DNS server cannot be used by people on the outside. I have an ACL to only allow lookup requests from people inside my network. I understand my server is trying to look up DNS information across the internet and is not finding the information or is rejected which is causing these errors. So I'm wondering why I get 20,000 error messages a day per server. We don't have any DNS servers to forward requests to either. We just use it as a caching DNS server really. We don't use this serve to host any zones at all.
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