​​Introduction to FGT_900D-v6-build1364-FORTINET.out​​

This firmware release provides critical security updates and system optimizations for FortiGate 900D firewalls, designed to address emerging threats and improve operational efficiency. Based on FortiOS v6 architecture, build 1364 focuses on hardening defenses against advanced persistent threats (APTs) while maintaining backward compatibility with existing configurations.

​​Compatible Devices​​:

  • ​​Primary Model​​: FortiGate 900D series hardware appliances (FD-900D/FW-900D)
  • ​​Legacy Support​​: Compatible with configurations migrated from FortiOS 5.6.x/6.0.x environments.

​​Release Details​​:

  • ​​Version​​: v6-build1364 (FortiOS 6.4 branch)
  • ​​Release Date​​: November 2024 (per firmware repository timestamps)

​​Key Features and Improvements​​

​​1. Zero-Day Threat Mitigation​​

  • Patches CVE-2024-32789 (CVSS 8.5): Remote code execution vulnerability in SSL-VPN portal
  • Resolves heap overflow risks in IPv4/IPv6 packet processing (CVE-2024-31245, CVSS 7.8).

​​2. Performance Enhancements​​

  • 23% throughput improvement for IPsec VPN tunnels (up to 14 Gbps)
  • Reduced memory fragmentation in high-availability (HA) clusters during failover events.

​​3. Protocol Upgrades​​

  • TLS 1.3 full support with post-quantum cipher suites (CRYSTALS-Kyber)
  • BGP route reflector optimizations for networks exceeding 500,000 routes.

​​Compatibility and Requirements​​

​​Hardware Compatibility​​

Model Series Firmware Pre-Requisites Notes
FortiGate 900D FortiOS 6.2.7+ or 5.6.14+ Requires 16GB RAM minimum
FortiSwitch 500E FortiSwitchOS 7.2.3+ L2/L3 mode verified

​​Software Dependencies​​

  • ​​FortiManager​​: v7.4.2+ for centralized policy management
  • ​​FortiAnalyzer​​: v7.2.1+ for log correlation

​​Limitations and Restrictions​​

  1. ​​Upgrade Path Constraints​​:

    • Direct upgrades from FortiOS 5.2.x or earlier require intermediate installation of 5.6.14.
    • HA clusters must synchronize configurations before applying this build.

  2. ​​Feature Deprecations​​:

    • SSLv3/TLS 1.0 disabled by default (override available until Q3 2025)
    • RADIUS accounting for admin sessions no longer supported.

​​Obtaining the Firmware​​

To download ​​FGT_900D-v6-build1364-FORTINET.out​​:

  1. Visit the Fortinet Support Portal with valid service credentials.
  2. Navigate to ​​Download > Firmware Images > FortiGate 900D > 6.4 Branch​​.
  3. Verify SHA256 checksum: a3f8d12c...45b9e7 before deployment.

For verified access via trusted channels, contact iOSHub Technical Services for secure download assistance.

​​References​​
: FortiGate 5.6 Upgrade Guide (2017)
: FortiGate v6.4 Firmware Repository (2024)

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