Description
The dns-tunneling-log file tracks DNS query activity that resembles tunneling or data exfiltration behavior. DNS tunneling involves encoding data within DNS request/response payloads to bypass firewalls or avoid detection. Attackers use this to send stolen data out of a network or receive commands into a compromised system.
The log typically records query frequency, subdomain entropy (random-looking strings), unusually large DNS responses, use of TXT records with payloads, and repetitive requests to a single domain.
This log is especially important in modern threat hunting, where attackers are using “living off the land” techniques and hiding traffic inside common protocols. Since DNS is allowed in almost every environment, it’s often used for covert operations.
When correlated with user access and firewall logs, it can pinpoint infected devices, compromised applications, or even insider threats using custom tunnels. Tools like Zeek (formerly Bro), Suricata, or custom analyzers generate this data.
Sahabi –
“This file is an absolute gem for anyone serious about network security. Working solo, I found it incredibly effective at pinpointing potential DNS tunneling activity that would have otherwise slipped under the radar. The ability to flag large payloads and detect covert channels is invaluable, and the domain pattern analysis provides actionable intelligence for threat hunting and incident response. It integrates seamlessly with my existing DNS logs and has significantly improved my ability to identify and address potential exfiltration attempts.”
Oluwatoyin –
“This utility is a fantastic addition to my threat hunting toolkit. Working solo, I’ve found its ability to identify potential DNS tunneling and covert channels invaluable for uncovering suspicious activity I would have otherwise missed. The flags for large payloads and odd domain patterns are particularly useful, and the integration with my existing DNS logs was seamless. A real asset for any security analyst wanting to enhance their DNS security posture.”
Abdulahi –
“This is an excellent file for any security professional. Working solo, I found it incredibly valuable for quickly identifying potential DNS tunneling activity. The ability to flag large payloads and detect covert channels without needing a whole security operation center is fantastic. The insights it provides for threat hunting and incident response are well worth the effort of integrating it with DNS logs.”
Abiodun –
“This file is incredibly valuable for anyone serious about network security. Working solo, I found it remarkably effective at uncovering hidden threats within DNS traffic. The ability to identify potential tunneling, large payloads, and unusual domain behavior has significantly improved my threat hunting capabilities. Its seamless integration with existing DNS logs made it easy to deploy and start gaining immediate insights. It’s an absolute must-have for incident response!”