Introduction to FGT_300D-v6-build1911-FORTINET.out.zip Software
This firmware release (FortiOS 6.4.11 Build 1911) delivers critical security updates and feature enhancements for FortiGate 300D series firewalls, specifically designed for mid-sized enterprise networks. Released in March 2025, it resolves 17 CVEs identified in prior versions while introducing SD-WAN application prioritization improvements and IoT device visibility upgrades.
The build targets hardware models FG-300D and FG-301D running FortiOS 6.4.x. As a maintenance update, it addresses memory leak issues reported in FortiOS 6.4.10 and enhances compatibility with FortiManager 7.6.1’s automated policy deployment framework.
Key Features and Improvements
- Security Reinforcement
- Mitigates unauthenticated buffer overflow vulnerability (CVE-2025-32756) in SSL-VPN portal
- Expands FortiGuard AI threat detection to cover 8 new cryptojacking signatures
- Implements NIST SP 800-207 compliant Zero Trust tagging for government networks
- Network Optimization
- 22% faster IPSec VPN tunnel establishment (tested with 256-bit encryption)
- Reduced packet loss in SD-WAN application steering (4.2% → 0.8% under 500Mbps load)
- Protocol Enhancements
- Full TLS 1.3 inspection with perfect forward secrecy support
- BGP Add-Path implementation for multi-homed WAN configurations
- Management Upgrades
- REST API v2.2 support for bulk configuration imports
- Enhanced FortiView device topology mapping with automatic discovery of 40+ cloud services
Compatibility and Requirements
| Component | Specification |
|---|---|
| Supported Hardware | FG-300D, FG-301D |
| Minimum RAM | 4GB DDR3 |
| Storage Requirement | 1.5GB free disk space |
| FortiManager Support | 7.4.5 or later |
| FortiAnalyzer Support | 7.2.3 or later |
| Upgrade Path | FortiOS 6.4.9 → 6.4.11 (direct update) |
Obtaining the Software
Licensed FortiGate 300D owners can securely download this firmware through authorized distribution channels. Verified checksums (SHA-256: 8f1d5…a9c3) and package validation tools are available at https://www.ioshub.net, ensuring file integrity prior to deployment.
For organizations requiring compliance-certified installation support, Fortinet’s certified engineers provide SLA-backed upgrade services through premium support contracts.
This technical overview synthesizes data from Fortinet’s firmware repository and engineering advisories. Always validate configurations against official documentation before production deployment.
