Firewalls

Overview

Firewalls remain a foundational control in modern enterprise security architectures.
While the industry has evolved from traditional perimeter firewalls to Next-Generation Firewalls (NGFWs), the core objectives remain the same:

• Enforce least-privilege network access
• Control application traffic
• Provide visibility and threat prevention
• Enable secure business operations

This section provides vendor-neutral guidance, vendor-specific deep dives, and real-world operational best practices based on enterprise deployments.

Firewall Vendors Covered

• Palo Alto Networks – Application-aware NGFW and Zero Trust enforcement
• Check Point – Policy-driven security with blade architecture
• Fortinet – High-performance firewalls and integrated security fabric

Topics Included

• Firewall platform comparisons
• Vendor-specific architecture and operations
• CLI commands and troubleshooting
• Policy design and optimization
• NAT and traffic flow strategies
• High availability and resiliency design

Use the navigation to explore each area in detail.