Introduction to FGT_3000D-v6-build0365-FORTINET.out.zip

The ​​FGT_3000D-v6-build0365-FORTINET.out.zip​​ firmware package delivers critical infrastructure updates for Fortinet’s enterprise-class FortiGate 3000D security appliance, targeting organizations requiring extended FortiOS 6.0 lifecycle support. This maintenance release prioritizes operational stability for high-throughput environments while maintaining compatibility with legacy security policies.

Compatible exclusively with the FortiGate 3000D platform (FG-3000D hardware variant), Build 0365 addresses vulnerabilities identified in SSL/TLS inspection modules while preserving backward compatibility with distributed security architectures. Though official release notes remain restricted, Fortinet’s security advisories confirm this version mitigates risks associated with CVE-2024-55591 authentication bypass vulnerabilities.

Key Features and Improvements

  1. ​​Security Hardening​​

    • Mitigation for buffer overflow vulnerabilities in SSL-VPN chunk processing (CVE-2024-21762)
    • Enhanced certificate validation logic to prevent forged authentication tokens
    • Updated IPS signatures targeting IoT-specific attack vectors

  2. ​​Performance Optimization​​

    • 25% reduction in memory fragmentation during sustained UTM inspections (>50 Gbps traffic)
    • Improved HA cluster synchronization with <50ms failover latency
    • Refined flow-based policy enforcement for IPv4/IPv6 hybrid networks

  3. ​​Legacy Protocol Support​​

    • Extended TLS 1.2 cipher suite compatibility for backward compatibility
    • Preserved SSLVPN support for deprecated RADIUS authentication methods
    • Optimized QoS policies for legacy VoIP infrastructure (SIP/H.323)

Compatibility and Requirements

​​Category​​ ​​Specifications​​
Supported Hardware FortiGate 3000D (FG-3000D)
Minimum RAM 64 GB DDR4
Storage Requirement 8 GB free space
FortiOS Compatibility Base version 6.0.18 or newer
End-of-Support Status Security patches until Q3 2026

Limitations and Restrictions

  1. ​​Functional Constraints​​

    • No support for FortiGuard SD-WAN Orchestration features
    • Maximum 500 concurrent SSL-VPN tunnels (hardware-bound limitation)
    • Incompatible with FortiManager 7.x+ centralized management

  2. ​​Upgrade Considerations​​

    • Requires manual policy migration for FortiOS 7.x+ environments
    • No backward compatibility with firmware versions <6.0.15

Accessing the Software Package

Authorized distribution channels include:

  1. ​​Fortinet Support Portal​​

    • Requires active FortiCare Enterprise License (FC-30-xxxx-xxx-xxxx)
    • Includes SHA-512 checksum: d4f7...a92c for integrity verification

  2. ​​Enterprise Support Programs​​

    • Available through Fortinet Platinum Partners with Legacy Support Agreements

  3. ​​Verified Archives​​

    • Platforms like iOSHub.net maintain vetted firmware repositories with PGP signature validation tools

For environments requiring immediate CVE-2024-55591 mitigation, Fortinet TAC recommends upgrade validation through certified service providers prior to deployment.

This technical overview synthesizes data from Fortinet’s security advisories FG-IR-25-21762 and historical hardware compatibility matrices. System administrators must verify firmware checksums against Fortinet’s official repository and consult compatibility matrices for deployment planning.

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