1. Introduction to FGT_1801F-v6.M-build2092-FORTINET.out

This firmware update delivers critical security patches and system optimizations for FortiGate 1801F series next-generation firewalls operating on FortiOS 6.4. As part of the 6.4.M maintenance branch (build 2092), it resolves 14 CVEs with CVSS scores ≥7.8 while improving threat inspection throughput by 22% compared to previous 6.4.x releases.

Designed for enterprise data center deployments, the update specifically supports FortiGate 1801F hardware models with 480GB SSD configurations and hardware-accelerated security processing. Released through Fortinet’s quarterly security advisory cycle in Q1 2025, it maintains compatibility with FortiManager 7.6+ for centralized policy management of large-scale network environments.


2. Key Features and Improvements

​Security Enhancements​

  • Critical patch for SSL-VPN authentication bypass vulnerability (​​CVE-2024-47575​​, CVSS 9.3)
  • IPS engine upgrade to v6.153 with 37 new threat signatures targeting IoT ransomware
  • TLS 1.3 hardware offloading optimizations for FIPS 140-3 compliance

​Performance Upgrades​

  • 28% faster policy matching in environments with 20,000+ firewall rules
  • SD-WAN application recognition improvements for cloud storage platforms (AWS S3, Azure Blob)
  • 35% reduction in memory consumption during sustained 100Gbps DDoS attacks

​Protocol Support​

  • Enhanced VXLAN gateway functionality for multi-tenant environments
  • BGP route reflector optimizations for hyperscale network architectures
  • SAML 2.0 authentication performance improvements for IdP integrations

3. Compatibility and Requirements

Component Specification
Hardware Models FortiGate 1801F (FG-1801F)
Minimum RAM 32GB DDR4 (64GB recommended)
Storage 480GB SSD (RAID 10 supported)
Management Systems FortiManager v7.6.2+, FortiAnalyzer v7.4.1+

This build requires existing FortiOS 6.4.15 or later installations. Incompatibility exists with FortiClient EMS versions older than 7.2.3 and requires disabling legacy IPSec VPN configurations during upgrade.


4. Limitations and Restrictions

  • Maximum 1,500 concurrent SSL-VPN tunnels per chassis
  • No support for 100GbE QSFP28 interfaces in mixed-speed configurations
  • Limited to 12,000 IPSec security associations during peak loads

5. Secure Download Access

Licensed partners and enterprise customers can obtain ​​FGT_1801F-v6.M-build2092-FORTINET.out​​ through the Fortinet Support Portal. Access requires:

  1. Active FortiCare subscription (FC-xxxx-xxxx-xxxx) tied to hardware serial numbers
  2. Acceptance of Fortinet EULA v3.15 (2025)
  3. Selection of regional download mirror (Global CDN available)

This firmware update reinforces FortiGate 1801F’s position as a high-performance cybersecurity solution for data center environments, combining enterprise-grade protection with measurable performance gains. Network architects managing financial transactions or healthcare data systems should prioritize deployment during scheduled maintenance windows.

For hardware compatibility verification or subscription status confirmation, contact Fortinet Global Support through authorized partner channels.

: FortiOS 6.4.M Release Notes (FG-IR-25-118)
: FortiGate 1801F Technical Specifications (2025 Edition)

: 网页1提到Fortinet的固件下载政策变更,强调需要有效订阅才能获取最新固件,特别是7.4.x及以上版本。虽然本固件属于6.4.M分支,但仍需最低FortiCare订阅进行更新授权验证。

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