PCI Requirement 1: Install and Maintain a Firewall Configuration to Protect Cardholder Data | What You Need to Know
For Payment Card Industry (PCI) compliance, there are twelve (12) core, functional requirements mandated under PCI DSS v1.2. What’s important to note is that many times you truly need to “read between the lines” to interpret, comprehend, and understand what the PCI DSS standards are actually stating, and asking you to validate.
Take PCI Requirement #1: Install and maintain a firewall configuration to protect cardholder data. If you read all the requirements and the tests that accompany each requirement, it seems to sound quite straight forward. Well it is and it isn’t. The “isn’t” part lies in the ability to interpret some testing that really has not been spelled out for you. For example, throughout requirement #1 it tells you to “examine” and “verify” a whole host of configuration settings for network devices, particularly firewalls and routers. So how should you interpret “examine” and “verify”. As a Qualified Security Assessor (QSA) for PCI, I can tell you that just simply asking for the rulesets and configuration documents is simply not enough. You have to actually examine, interpret, read, and dissect the rules and configurations settings, match them against the test criteria, along with using the network topology documents (that should be developed) as further evidence. In short, simply printing out rulesets, throwing them in a folder as audit evidence and moving on to the next phase of the PCI is not going to cut it. If you want to brush on truly understanding rulesets and the configuration of network devices (routers, firewalls, load balancers, etc.), CISCO and JUNIPER and other network device providers have a host of free information on the internet.
To learn more about PCI DSS compliance and Requirement 1 and other areas of the PCI DSS v.1.2 standard, then visit PCIassessment.org.