Exam PSE-Strata-Pro-24 Topic 1 Question 39 Discussion

* DNS Security (Answer C):
* DNS Securityis the appropriate subscription for addressingthreats over port 53.
* DNS tunneling is a common method used fordata exfiltration, infiltration, and C2 activities, as it allows malicious traffic to be hidden within legitimate DNS queries.
* The DNS Security service appliesmachine learning modelsto analyze DNSqueries in real-time, block malicious domains, and prevent tunneling activities.
* It integrates seamlessly with the NGFW, ensuring advanced protection against DNS-based threats without requiring additional infrastructure.
* Why Not Threat Prevention (Answer A):
* Threat Prevention is critical for blocking malware, exploits, and vulnerabilities, but it does not specifically addressDNS-based tunnelingor C2 activities over port 53.
* Why Not App-ID and Data Loss Prevention (Answer B):
* While App-ID can identify applications, and Data Loss Prevention (DLP) helps prevent sensitive data leakage, neither focuses on blockingDNS tunnelingor malicious activity over port 53.
* Why Not Advanced Threat Prevention and Advanced URL Filtering (Answer D):
* Advanced Threat Prevention and URL Filtering are excellent for broader web and network threats, but DNS tunneling specifically requires theDNS Security subscription, which specializes in DNS-layer threats.
References from Palo Alto Networks Documentation:
* DNS Security Subscription Overview