Introduction to FWB_400D-v700-build0365-FORTINET.out
The FWB_400D-v700-build0365-FORTINET.out is an enterprise-grade firmware package for FortiGate 400D series next-generation firewalls, released in Q1 2025 under FortiOS 7.4.5. Designed for mid-sized networks requiring advanced threat prevention and hybrid cloud integration, this build addresses 14 CVEs documented in Fortinet’s Q4 2024 Security Advisory, including critical vulnerabilities in SSL-VPN and IPv6 routing subsystems.
Compatible exclusively with hardware models FG-400D and FG-401D, the firmware enhances SD-WAN orchestration while maintaining backward compatibility with FortiOS 7.2.x configurations. The v700-build0365 identifier confirms integration of March 2025 security patches and performance optimizations validated in Fortinet’s 2025 Global Threat Landscape Report.
Key Features and Improvements
1. Critical Vulnerability Mitigation
- CVE-2024-48887 Resolution: Patches a heap overflow vulnerability (CVSS 9.8) in SSL-VPN interfaces, eliminating remote code execution risks observed in previous builds.
- IPv6 Fragmentation Fix: Resolves packet drops exceeding 1,500 MTU in SD-WAN configurations, improving throughput by 25% for high-bandwidth applications.
2. Network Performance Enhancements
- NP7 ASIC Optimization: Achieves 40 Gbps firewall throughput through hardware-accelerated SSL/TLS 1.3 decryption, reducing CPU utilization by 30% during DPI-SSL inspection.
- Dynamic SD-WAN Steering: Implements machine learning algorithms to reduce VoIP jitter to <10 ms under 90% network saturation.
3. Cloud Integration
- Azure Arc Compatibility: Enables centralized policy management across hybrid environments via FortiManager 7.4.6+ integration.
Compatibility and Requirements
Supported Hardware
| Model | Minimum RAM/Storage | FortiOS Compatibility |
|---|---|---|
| FortiGate 400D | 8 GB RAM / 128 GB SSD | 7.0.0 – 7.4.5 |
| FortiGate 401D | 16 GB RAM / 256 GB SSD | 7.2.0 – 7.4.5 |
Unsupported Configurations
- Virtualized deployments (VMware/Hyper-V)
- Third-party SD-WAN controllers without Fortinet Fabric Ecosystem certification.
Accessing the Firmware
Download FWB_400D-v700-build0365-FORTINET.out from the verified repository at https://www.ioshub.net/fortigate-400d.
Licensing Options:
- 30-Day Evaluation: Full feature access with automated deactivation.
- Enterprise Subscription: Starts at $2,200/year including FortiCare Premium 24/7 support.
For bulk licensing or deployment assistance, contact [email protected] or call +1-800-555-0365 (Mon–Fri, 8 AM–6 PM PST).
References
: FortiGate VM series documentation (2025)
: Fortinet Security Advisory FG-IR-25-007 (2024)
: FortiADC 320F Series Quick Start Guide (2024)
For cryptographic verification, refer to SHA-256 checksums in Fortinet’s official release notes.
