Your firewall is an essential part of your network security because it is the first line of protection against online attackers. Configuring a firewall can be a challenging task, but breaking it down into smaller tasks can make it much easier to handle.
Network documentation is essential for network maintenance, security design, and incident response tasks. Network documentation will always be essential for your institution.
Micro-segmentation allows merchants to isolate system / transactional components from the cardholder data environment, making it difficult for hackers to access credit card information.
Regular firewall reviews help ensure that weaknesses in network security are identified prior to exploitation, and allow rules to be updated as necessary to address technology changes or new threats.
When changing a configuration of a firewall it is important to consider potential security risks in order to avoid future problems. Protection is a complex problem and may differ from case to case, but this article outlines best practices for configuring firewall rules on perimeter.
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