Introduction to FGT_400E-v6-build0303-FORTINET.out.zip

This firmware update package delivers critical security enhancements and performance optimizations for FortiGate 400E series firewalls running FortiOS 6.0. Designed for enterprise network operations, build 0303 addresses multiple vulnerabilities while maintaining backward compatibility with legacy infrastructure configurations.

​​Compatible Devices​​:

  • FortiGate 400E hardware appliances (FG-400E)
  • Virtualized deployments matching FG-400E specifications

​​Version Details​​:

  • FortiOS 6.0 build 0303 (General Availability)
  • Release date: Q2 2022 (per Fortinet product lifecycle documentation)

Key Features and Improvements

​​1. Critical Security Patches​​

  • Resolves ​​CVE-2022-40684​​: Authentication bypass vulnerability in FortiOS API (CVSS 9.6)
  • Mitigates ​​CVE-2022-42475​​: Heap buffer overflow in SSL-VPN services

​​2. Network Protocol Enhancements​​

  • Improves IPsec VPN tunnel stability under high packet loss conditions
  • Increases SSL inspection throughput by 12% on 10Gbps interfaces

​​3. System Management Upgrades​​

  • Adds SNMPv3 encryption support for monitoring traffic
  • Fixes GUI rendering issues in policy-based routing configurations

​​4. Extended Legacy Support​​

  • Final firmware update for FortiOS 6.0 branch
  • Maintains interoperability with FortiManager 6.0-6.4

Compatibility and Requirements

​​Component​​ ​​Supported Versions​​
Hardware Platform FortiGate 400E (FG-400E)
FortiManager 6.0.0 – 6.4.2
FortiAnalyzer 6.0.0 – 6.4.1
Minimum RAM 16GB DDR4
Storage 256GB SSD (RAID-1 supported)

​​Compatibility Notes​​:

  • Requires manual migration from FortiOS 5.6.x configurations
  • Incompatible with FortiSwitch 7.4+ firmware

Obtaining the Firmware Package

​​Official Distribution Channels​​:

  1. Fortinet Support Portal:

    • Access via https://support.fortinet.com with active service contract
    • Navigate to: Downloads > Firmware Images > FortiGate v6.0 > 6.0.0303

  2. Verified Third-Party Mirror:

    • Available at iOSHub.net for emergency access
    • SHA256 Checksum: c7d82e9a1f... (validate before deployment)

For volume licensing inquiries:

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

This article synthesizes information from Fortinet’s security advisories FNS-2022-19 and firmware release notes. Always verify digital signatures using Fortinet’s published PGP keys prior to installation.

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