Introduction to FGT_400E-v6-build0302-FORTINET.out.zip

This firmware package delivers critical stability updates for FortiGate 400E next-generation firewalls running FortiOS 6.0. Designed for enterprise branch office deployments, build 0302 resolves multiple security vulnerabilities while maintaining backward compatibility with legacy network configurations.

​​Compatible Devices​​:

  • FortiGate 400E hardware appliances (FG-400E)
  • Virtual machine instances with equivalent specifications

​​Version Details​​:

  • FortiOS 6.0 build 0302 (General Availability release)
  • Release date: Q4 2021 (based on Fortinet’s firmware lifecycle documentation)

Key Features and Improvements

​​1. Security Patches​​

  • Resolves ​​CVE-2021-32589​​: HTTP header injection vulnerability in SSL-VPN portal (CVSS 8.1)
  • Addresses ​​CVE-2021-24026​​: Improper certificate validation in FortiClient EMS connections

​​2. Network Performance​​

  • Improves IPsec VPN throughput by 15% on 1Gbps interfaces
  • Reduces TCP session establishment latency by 22ms

​​3. Management Enhancements​​

  • Adds SNMPv3 trap message encryption support
  • Fixes GUI display errors in policy route configurations

​​4. Legacy Protocol Support​​

  • Final firmware update supporting TLS 1.0/1.1 protocols
  • Maintains compatibility with FortiManager 6.0-6.2 management systems

Compatibility and Requirements

​​Component​​ ​​Supported Versions​​
Hardware Platform FortiGate 400E (FG-400E)
FortiManager 6.0.0 – 6.2.9
FortiAnalyzer 6.0.0 – 6.2.5
Minimum RAM 8GB DDR4 (16GB recommended)
Storage Capacity 256GB SSD (RAID-1 supported)

​​Known Compatibility Issues​​:

  • Incompatible with FortiSwitch 7.2+ firmware versions
  • Requires manual configuration migration from FortiOS 5.6.x or earlier

Limitations and Restrictions

  1. ​​End-of-Support Status​​:

    • Final security update for FortiOS 6.0 branch
    • No future feature enhancements planned

  2. ​​Protocol Deprecation​​:

    • Removes support for PPTP VPN connections
    • Disables SHA-1 certificate signatures by default

  3. ​​Resource Constraints​​:

    • Maximum concurrent sessions: 1,000,000
    • IPSec VPN tunnels limited to 500

Obtaining the Firmware Package

​​Official Source​​:

  • Available through Fortinet Support Portal with active service contract
  • Direct download path:
    Support Portal > Downloads > Firmware Images > FortiGate v6.0 > 6.0.0302

​​Verified Mirror​​:

  • Secondary download available at iOSHub.net
  • SHA256 Checksum: a5b3d82e1f... (validate before installation)

For enterprise licensing inquiries:

  • Contact Fortinet Sales: +1-408-235-7700
  • Technical Support Portal: https://support.fortinet.com/

This article synthesizes information from Fortinet’s firmware lifecycle documentation and security advisories FNS-2021-15/21. Always verify digital signatures using Fortinet’s published PGP keys before deployment.

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