PCI DSS Practice Question: What is the PRIMARY purpose of a firewall in a PCI DSS environment? | CyberCertPrep
PCI SSCPCI DSSNetwork SecurityEASYFree question
What is the PRIMARY purpose of a firewall in a PCI DSS environment?
A.To control traffic between trusted and untrusted networks
B.To encrypt cardholder data at rest, which Requirement 4 mandates for PAN sent over open, public networks such as the internet and wireless links
C.To perform vulnerability scanning
D.To generate audit logs
Why A is correct
Firewalls control inbound and outbound network traffic by enforcing rules that restrict access between trusted and untrusted networks, a core requirement of PCI DSS.
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Where this fits in the PCI DSS exam
Network Security
Covers network security concepts and practices within PCI DSS.
This question belongs to the "Build & Maintain a Secure Network" domain, which makes up about 20% of the PCI DSS exam.
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What does a firewall do in the context of PCI DSS?