Tap Into Your Valuable DNS Data

This article is a practical guide to deploying DNSTAP with the ISC BIND DNS server to capture DNS queries and responses efficiently using Google's protocol buffers and the frame-stream (fstrm) tool. It explains required dependencies, building BIND with DNSTAP enabled, configuring fstrm to capture DNSTAP output via a UNIX socket (including a sample systemd service), BIND configuration options for DNSTAP message types, and methods for reading and analyzing the resulting logs with dnstap-read or a custom Python parser.