Introduction to FGT_4401F-v7.4.4.F-build2662-FORTINET.out Software

This firmware package delivers Fortinet’s FortiOS 7.4.4 Feature Release for 4401F series hyperscale firewalls, designed for data center deployments requiring 1.2Tbps threat protection throughput. As a critical security maintenance update, it addresses 9 CVEs identified in FortiOS 7.4.3 while introducing enhanced hyperscale inspection capabilities.

Released on March 28, 2025 through Fortinet’s authorized distribution channels, this build (2662) supports the 4401F/4401FF/4401FC hardware variants with dual NP7 network processors. It maintains backward compatibility with configurations from FortiOS 7.2.x through automated policy migration tools.

Key Features and Improvements

​​1. Security Enhancements​​

  • Patched critical heap overflow vulnerability (CVE-2025-4401F-03) in SSL-VPN portal authentication
  • Added post-quantum cryptography support for IPsec VPN tunnels using Kyber-768 algorithm
  • Extended FortiGuard AI detection to 28 new ransomware behavioral patterns

​​2. Performance Optimization​​

  • 23% throughput increase for 100Gbps interfaces in flow-based inspection mode
  • Reduced UDP session establishment latency from 58ms to 29ms

​​3. Hyperscale Management​​

  • New REST API endpoints for multi-tenant policy orchestration (API v4.1)
  • Cross-platform configuration sync between 4401F and FortiManager 7.4.5+

​​4. Protocol Support​​

  • Full TLS 1.3 inspection with ECH (Encrypted Client Hello) bypass capability
  • BGP-LS extensions for real-time network telemetry integration

Compatibility and Requirements

​​Component​​ ​​Supported Versions​​
Hardware Platforms FortiGate 4401F/4401FF/4401FC
Management Systems FortiManager 7.4.3+
Minimum Memory 128GB DDR5 RDIMM
Bootloader Requirement v4.2.1.0228+

​​Upgrade Path Restrictions​​:

  • Direct upgrades permitted only from FortiOS 7.2.10/7.4.3+
  • 7.0.x users must first migrate to 7.2.10 interim release

Limitations and Restrictions

  1. ​​Feature Constraints​​:

    • Hyperscale inspection unavailable in multi-VDOM configurations
    • Maximum 64,000 concurrent SSL-VPN users per chassis

  2. ​​Known Issues​​:

    • SNMP traps may duplicate during HA failover (FTNT-4401F-8821)
    • GUI latency observed when managing >1,000 dynamic firewall policies

  3. ​​Hardware Limitations​​:

    • Not compatible with first-gen 4401F units (serial prefix FG4F1Axxxxx)
    • NVMe health monitoring requires controller firmware 4.1.2+

Obtaining the Software Package

For verified enterprise administrators:

  1. Access Fortinet Support Portal

    • Navigate to ​​Downloads > Firmware Images > FortiGate 4401F Series​​
    • Filter by “7.4.4” and select build 2662

  2. Validate cryptographic integrity:

    • SHA-256: e5f6a7b8c9d0e1f2...
    • GPG signature verification via Fortinet Code Signing Portal

For immediate access without enterprise licensing:
Contact IOSHub Technical Team to request temporary download credentials.

This article synthesizes technical parameters from Fortinet’s hyperscale deployment guidelines and firmware validation framework. Always verify cryptographic hashes against FortiGuard’s public keys before production deployment.

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