Next-generation firewalls (NGFWs) have evolved far beyond simple packet filtering. Today's enterprise firewalls integrate advanced threat prevention, application control, SD-WAN, and zero-trust capabilities.
Key Evaluation Criteria
Performance
Look for throughput ratings that match your actual network traffic, not just theoretical maximums. Consider SSL/TLS inspection performance, which can significantly impact real-world throughput.
Threat Prevention
Modern NGFWs should include:
- Application-aware intrusion prevention
- Malware sandboxing and analysis
- DNS security and URL filtering
- Botnet and command-and-control detection
SD-WAN Integration
Many organizations are replacing MPLS with SD-WAN. Evaluate whether the firewall's SD-WAN capabilities meet your branch connectivity requirements, including application-aware routing and quality of service.
Management and Visibility
Centralized management becomes critical as you scale. Consider:
- Single-pane-of-glass management
- API and automation capabilities
- Cloud-based vs. on-premise management
- Role-based access control
Total Cost of Ownership
Factor in not just hardware costs but also:
- Annual security subscription renewals
- Support and maintenance contracts
- Staff training and certification
- Integration with existing security tools
Top Vendors
The leading enterprise NGFW vendors include Fortinet FortiGate, Palo Alto Networks, Check Point, and Cisco Firepower. Each offers strengths in different areas—evaluate based on your specific requirements rather than brand recognition alone.