Exam PSE-Strata-Pro-24 Topic 1 Question 4 Discussion

The default configuration of a Palo Alto Networks NGFW includes a set of default security rules that determine how traffic is handled when no explicit rules are defined. Here's the explanation for each option:
* Option A: Security profiles are applied to all policies by default, eliminating implicit trust of any data traversing the firewall
* Security profiles (such as Antivirus, Anti-Spyware, and URL Filtering) are not applied to any policies by default. Administrators must explicitly apply them to security rules.
* This statement is incorrect.
* Option B: The default policy action for intrazone traffic is deny, eliminating implicit trust within a security zone
* By default, traffic within the same zone (intrazone traffic) isallowed. For example, traffic between devices in the "trust" zone is permitted unless explicitly denied by an administrator.
* This statement is incorrect.
* Option C: The default policy action allows all traffic unless explicitly denied
* Palo Alto Networks firewalls do not have an "allow all" default rule. Instead, they include a default "deny all" rule for interzone traffic and an implicit "allow" rule for intrazone traffic.
* This statement is incorrect.
* Option D: The default policy action for interzone traffic is deny, eliminating implicit trust between security zones
* By default, traffic between different zones (interzone traffic) is denied. This aligns with the principle of zero trust, ensuring that no traffic is implicitly allowed between zones.
Administrators must define explicit rules to allow interzone traffic.
* This statement is correct.
References:
* Palo Alto Networks documentation on Security Policy Defaults
* Knowledge Base article on Default Security Rules