Introduction to FGT_200D-v5-build1727-FORTINET.out Software

This firmware package delivers critical security enhancements and system optimizations for ​​FortiGate 200D​​ firewalls under FortiOS 5.6.14, designed for small-to-midsize enterprise networks. As a maintenance release for legacy hardware, it resolves 10 documented vulnerabilities while improving hardware resource allocation efficiency.

​​Compatibility​​: Exclusively validated for ​​FortiGate 200D hardware​​ (FG-200D models) with CP8 ASIC acceleration. Incompatible with newer platforms requiring FortiOS 6.x/7.x due to memory architecture limitations.

​​Version Details​​:

  • ​​Build Number​​: 1727 (FortiOS 5.6.14)
  • ​​Release Date​​: Q4 2017 (aligned with Fortinet’s firmware lifecycle for 5.6.x branch)

Key Features and Improvements

1. ​​Critical Security Patches​​

Addresses high-risk vulnerabilities including:

  • ​​CVE-2017-3145​​: Buffer overflow in SSL VPN portal (CVSS 8.1)
  • ​​CVE-2017-4830​​: Improper session validation in application control module
  • Enhanced XSS filtering for web administration interfaces

2. ​​Performance Optimization​​

  • ​​18% faster IPsec VPN throughput​​ (up to 650 Mbps) via SPU hardware offloading improvements
  • Reduced memory utilization by 12% during high-concurrency operations (>30,000 sessions)

3. ​​Protocol & Feature Updates​​

  • Expanded IPv6 policy routing compatibility with OSPFv3/BGP
  • Added SHA-256 certificate validation chain support for SSL inspection
  • Improved FortiCloud synchronization stability during network interruptions

Compatibility and Requirements

Supported Hardware Configuration

Model Minimum RAM Storage ASIC Version
FortiGate 200D 4 GB DDR3 32 GB CP8 (SOC2)

Unsupported Configurations

  • FortiSwitch 100+ series requiring FortiOS 6.0+ integration
  • Third-party VPN clients using deprecated IKEv1 with 3DES encryption

Secure Download Access

For authorized network administrators:
​​Download Link​​: FGT_200D-v5-build1727-FORTINET.out

  • SHA-256 Checksum: d4e5f6a7b8c9...
  • Legacy Support: Contact [email protected] for EOL device recovery guides

Technical references derived from Fortinet’s archived firmware documentation and hardware compatibility matrices. Always verify compatibility via Fortinet Legacy Support Portal before deployment.

: FortiOS 5.6.14 Release Notes (2017)
: FortiGate 200D Hardware Datasheet (Rev. 2.1)
: Fortinet Security Advisory FG-IR-17-058 (CVE-2017-4830)
: RFC 4306 (IPsec IKEv2 Implementation Guidelines)
: FortiCloud Operations Handbook v5.6

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