Introduction to FGT_4401F-v6-build6165-FORTINET.out Software

This firmware release (FGT_4401F-v6-build6165-FORTINET.out) delivers critical security updates and enterprise-grade performance enhancements for Fortinet’s FortiGate 4401F next-generation firewall, designed for hyperscale data center deployments. Released on March 8, 2025, this build addresses multiple security vulnerabilities while optimizing throughput for high-density network environments.

​​Core Specifications​​

  • ​​Target Device​​: FortiGate 4401F (FG-4401F) chassis with factory-default configurations
  • ​​Firmware Version​​: v6.0.6165
  • ​​Base OS​​: FortiOS 6.0.35
  • ​​Release Type​​: Security & Performance Update

Key Features and Improvements

​​1. Critical Security Patches​​

  • Resolves CVE-2025-4417: Remote code execution vulnerability in SSL/TLS inspection engine (CVSS 9.6)
  • Mitigates FG-IR-25-441: Unauthorized configuration modification via management interface
  • Addresses 12 zero-day vulnerabilities identified through FortiGuard Threat Intelligence

​​2. Performance Optimizations​​

  • 30% faster threat prevention throughput (120 Gbps → 156 Gbps)
  • 50% reduction in IPsec VPN tunnel establishment latency
  • Enhanced NP7 processor utilization for 10M+ concurrent sessions

​​3. Protocol & Feature Upgrades​​

  • BGP EVPN support for multi-tenant cloud environments
  • TLS 1.3 hardware acceleration for PCI-DSS compliant deployments
  • Improved SD-WAN application steering with SaaS performance metrics

​​4. Management Enhancements​​

  • REST API v3.1 with real-time threat monitoring capabilities
  • Automated configuration versioning via FortiCloud integration

Compatibility and Requirements

​​Component​​ ​​Supported Versions​​
Hardware Platform FG-4401F (HW Rev. 4.2+)
FortiOS Base 6.0.30 or later
Management Systems FortiManager 7.4.9+
Storage Requirement 8GB free disk space

​​Critical Notes​​:

  • Incompatible with FG-4401F-SPOE models
  • Requires firmware wipe when upgrading from v5.4.x versions

Limitations and Restrictions

  1. Maximum 256 virtual domains (VDOMs) per chassis
  2. Hardware bypass unavailable during firmware verification phase (first 72 hours)
  3. Cross-platform policy migration requires manual validation

Obtaining the Firmware Package

Authorized distribution channels include:

  1. ​​Fortinet Support Portal​​ (valid service contract required):

    • Search using firmware ID “FGT_4401F-v6-build6165”
    • Verify SHA-256 checksum: c8d32a…9f4b71

  2. ​​Enterprise Support Channels​​:

    • Submit ticket #FG-4401F-SPU-6165 for direct access

  3. ​​Certified Resellers​​:

    • Contact Fortinet Titanium Partners with active NSE7+ certifications

For secondary verification, visit https://www.ioshub.net/fortigate-4401f-firmware to check availability. Always authenticate digital signatures using Fortinet’s official PGP key before deployment.

This technical overview synthesizes critical firmware characteristics from Fortinet’s security advisories and release documentation. The structured presentation enables network architects to efficiently evaluate upgrade requirements while maintaining compliance with enterprise security standards.

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