Which detection method identifies DNS tunneling by analyzing DNS requests, DNS payloads, unspecified domains, and the destination of DNS requests?

Which detection method identifies DNS tunneling by analyzing DNS requests, DNS payloads, unspecified domains, and the destination of DNS requests?

• A. Data Staging Detection
• B. Use of DNS Tunneling Detection
• C. Indicators of Compromise (IoCs)
• D. Use of Web Shell

Answer: (B)

Detecting DNS tunneling comes from monitoring the DNS channel itself and looking for suspicious patterns in how DNS is used. DNS tunneling hides data inside DNS requests, often encoding payloads in subdomain labels, and it typically involves unusual or long query names, domains that aren’t normally seen in the environment, and destinations outside the usual corporate DNS infrastructure. By analyzing the DNS requests, the payloads carried in those requests, the use of unspecified or anomalous domains, and where the requests’re going, you can spot the telltale signs of a covert channel and data exfiltration through DNS. This approach is the best fit because it targets the specific communication method attackers use to bypass some network defenses. The other options address different security concerns: data staging detection looks at how attackers move data within an environment, IoCs are broad indicators of compromise, and a web shell relates to persistent access on web servers. None of these focus on inspecting DNS traffic for tunneling patterns.

Detecting DNS tunneling comes from monitoring the DNS channel itself and looking for suspicious patterns in how DNS is used. DNS tunneling hides data inside DNS requests, often encoding payloads in subdomain labels, and it typically involves unusual or long query names, domains that aren’t normally seen in the environment, and destinations outside the usual corporate DNS infrastructure. By analyzing the DNS requests, the payloads carried in those requests, the use of unspecified or anomalous domains, and where the requests’re going, you can spot the telltale signs of a covert channel and data exfiltration through DNS.

This approach is the best fit because it targets the specific communication method attackers use to bypass some network defenses. The other options address different security concerns: data staging detection looks at how attackers move data within an environment, IoCs are broad indicators of compromise, and a web shell relates to persistent access on web servers. None of these focus on inspecting DNS traffic for tunneling patterns.