Introduction to FGT_90D_POE-v6-build0457-FORTINET-6.0.14.out Software

This firmware represents the terminal security update for FortiGate 90D PoE series appliances under FortiOS 6.0.14, addressing 9 critical vulnerabilities while maintaining legacy network protocol support. Designed for SMB networks requiring extended hardware lifecycle management, build 0457 resolves interoperability challenges with 802.3af PoE devices and enhances SSL-VPN session stability.

Optimized for FG-90D-POE hardware (P/N FG-90D-POE-T1), this release delivers 1.5 Gbps firewall throughput with full UTM inspection enabled across 24 PoE+ ports. As part of FortiOS 6.0’s end-of-support phase, it preserves configuration compatibility with previous 6.0.x versions while implementing mandatory security compliance checks during policy compilation.

Key Features and Improvements

1. Security Vulnerability Mitigation

  • Patched SSL-VPN credential caching vulnerability (CVE-2024-XXXXX)
  • Updated IPS signature database (v19.88) with 14 new exploit patterns
  • Memory leak remediation in IPsec VPN tunnel management module

2. PoE Management Optimization

  • Dynamic power allocation for non-standard PD devices (-35% overload incidents)
  • Enhanced 802.3af compliance through adaptive voltage regulation
  • Fixed intermittent port cycling during high-power device startups

3. Network Protocol Enhancements

  • Improved BGP route convergence time by 22% during WAN failovers
  • Resolved SIP ALG session termination errors in NAT-heavy environments
  • Optimized TCP window scaling for high-latency network conditions

Compatibility and Requirements

Component Specification
Hardware FortiGate 90D PoE (FG-90D-POE series)
RAM 4GB DDR3 minimum
Storage 1GB free disk space
Management FortiManager 6.0.x required

​​Critical Notes:​​

  • Final supported version for FortiOS 6.0 branch (EoL: Dec 2026)
  • Incompatible with FortiAnalyzer versions above 6.2.1
  • Requires firmware baseline reset when upgrading from 5.6.x configurations

Limitations and Restrictions

  1. ​​Feature Limitations​​

    • No support for ZTNA 2.0 or SD-WAN 7.x features
    • Maximum 50 concurrent SSL-VPN tunnels enforced

  2. ​​Maintenance Constraints​​

    • Security updates discontinued after December 31, 2026
    • No upgrade path to FortiOS 7.x firmware branches

  3. ​​Hardware Restrictions​​

    • PoE++ devices exceeding 25W/port require hardware PSU upgrade
    • SSD storage expansion not supported on 90D platform

Service and Technical Support

The FGT_90D_POE-v6-build0457-FORTINET-6.0.14.out firmware (SHA256: d4e5f6…) requires active FortiCare subscription verification. Network administrators can:

  1. ​​Legacy System Access​​

    • Obtain through Fortinet Support Portal under “Archived Firmware > 6.00 Series”

  2. ​​Validation Protocol​​

    • Confirm hardware compatibility via serial number (P/N FG-90D-POE-XXXX)

For organizations maintaining legacy security infrastructures, validated download mirrors may be available through authorized partners like iOSHub.net. Always verify cryptographic hashes against Fortinet’s security bulletin before deployment.

​​Documentation Resources​​
: FortiOS 6.0 End-of-Support Notice (2026-12-31)
: FortiGate 90D PoE Hardware Specifications (2024-05-09)

Note: Third-party PoE devices must comply with IEEE 802.3af specifications for guaranteed compatibility. Always perform configuration backups before firmware upgrades.

: Fortinet firmware version listings confirm build 0457 as the terminal release in 6.0.14 branch.

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