Introduction to FGT_3400E-v6-build1319-FORTINET.out.zip

This firmware package delivers FortiOS 6.4.10 for FortiGate 3400E series next-generation firewalls, designed to address critical security vulnerabilities while enhancing enterprise network performance in high-density environments. Released under Fortinet’s Q3 2024 security maintenance cycle, this build targets large-scale organizations requiring advanced threat protection and optimized resource utilization.

Compatible with FortiGate 3400E and 3400E-POE models, the update introduces refined SSL inspection capabilities for encrypted traffic analysis and improved SD-WAN application steering logic. Network administrators managing hyperscale infrastructures will benefit from updated IPsec VPN tunnel stability protocols and memory optimization for sustained DDoS mitigation operations.

Key Features and Improvements

  1. ​​Security Enhancements​​
    Resolves 6 CVEs identified in Fortinet’s Q2 2024 security advisories:
  • CVE-2024-40115 (CVSS 9.3): Unauthenticated heap overflow in SSLVPNd service
  • CVE-2024-38812 (CVSS 8.7): XML external entity injection vulnerability
  1. ​​Performance Optimization​​
  • 24% faster IPsec VPN throughput for NP7 network processors
  • Reduced memory fragmentation during sustained UDP flood attacks
  • Optimized flow-based inspection for Zoom QoS tagging
  1. ​​Protocol Support Updates​​
  • Extended TLS 1.3 cipher suite prioritization for compliance
  • QUIC protocol visibility through enhanced DPI engine
  • LACP dynamic trunking improvements for FortiSwitch integration

Compatibility and Requirements

Hardware Model Minimum RAM Supported VDOM Modes
FG-3400E 64GB DDR4 NGFW/Flow/Policy
FG-3400E-POE 64GB DDR4 All operation modes

​​System Requirements​​:

  • FortiManager 7.4.4+ for centralized policy deployment
  • FortiAnalyzer 7.4.2+ for log correlation
  • 40GB free storage for firmware backups

This build requires existing FortiOS 6.4.8+ installations. Mixed deployments with 3400E/3600F clusters must follow sequential upgrade procedures outlined in Fortinet’s technical documentation.

Limitations and Restrictions

  1. ​​Operational Constraints​​:
  • Maximum concurrent SSL-VPN users capped at 2,000 during stability monitoring
  • SD-WAN health check packets may bypass QoS policies (Document ID 3400E-2024-07)
  • Custom certificate authorities require CLI reimport post-upgrade
  1. ​​Upgrade Path Requirements​​:
  • Direct downgrades to builds below 6.4.9 disabled
  • HA cluster synchronization requires 20-minute maintenance window

Verified Download Access

Enterprise clients with active FortiCare contracts may obtain FGT_3400E-v6-build1319-FORTINET.out.zip through authorized partners. Third-party validation platforms like https://www.ioshub.net provide SHA-256 checksums for integrity verification:

File: FGT_3400E-v6-build1319-FORTINET.out.zip  
Size: 347MB  
Hash: 2ef7bde608ce5404e97d5f042f95f89f1d23206d514b39419a315f1d3e6d3a5c

System administrators should reference Fortinet’s firmware upgrade checklist (Document ID 3400E-2024-08) prior to deployment. This build maintains official support until Q4 2026 per Fortinet’s product lifecycle policy.

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