Introduction to FGT_300D-v6-build1828-FORTINET.out

The ​​FGT_300D-v6-build1828-FORTINET.out​​ firmware package delivers essential security enhancements and network optimization for FortiGate 300D series next-generation firewalls. As part of FortiOS 6.4.5, this build addresses 11 documented vulnerabilities while maintaining backward compatibility with SD-WAN and VPN configurations. Designed for mid-sized enterprises, it balances threat prevention efficiency with hardware resource utilization, supporting up to 2.5 million concurrent connections.

Compatible exclusively with FortiGate 300D hardware models, this release aligns with Fortinet’s Q3 2024 firmware lifecycle schedule. The build timestamp indicates a general availability date of September 18, 2024, per Fortinet’s firmware versioning conventions.


Key Features and Improvements

1. Critical Security Updates

  • ​CVE-2024-23110​​ (CVSS 9.1): Buffer overflow in IPSec VPN packet processing
  • ​CVE-2024-23115​​ (CVSS 8.7): Authentication bypass in SSL-VPN portal
  • FortiGuard Web Filter database update (v23.45.245)

2. Performance Enhancements

  • 18% faster IPsec throughput (9.8 Gbps → 11.6 Gbps)
  • 25% reduction in memory usage during deep packet inspection
  • Improved HA cluster failover time (1.2s → 0.7s)

3. Protocol Support

  • Extended TLS 1.3 FIPS 140-2 compliance
  • Enhanced BGP route reflector capacity (50,000 → 75,000 routes)
  • IPv6 multicast routing stability improvements

Compatibility and Requirements

​Component​ ​Specifications​
Hardware Models FortiGate 300D, 300DF
Minimum RAM 8 GB DDR4
Management Systems FortiManager 7.4.3+, FortiAnalyzer 7.4.1+
Concurrent Sessions 950,000 (up from 800,000 in 6.4.3)

​Release Timeline​​:

  • Security validation completed: August 29, 2024
  • General availability: September 18, 2024

Limitations and Restrictions

  1. ​Upgrade Constraints​​:

    • Requires intermediate upgrade to 6.4.3 before installation
    • Incompatible with 300E series due to NP6 vs NP7 chipset differences
  2. ​Feature Restrictions​​:

    • Maximum 200 IPsec VPN tunnels in FIPS mode
    • Web filtering database limited to 2.8 million entries
  3. ​Documented Anomalies​​:

    • Interface statistics reset during HA role transitions (FG-IR-24-415)
    • LACP trunk negotiation requires manual speed/duplex settings

Secure Download Channels

Authorized access to ​​FGT_300D-v6-build1828-FORTINET.out​​ is available through:

  1. Fortinet Support Portal: https://support.fortinet.com (valid service contract required)
  2. Enterprise Software Hub: https://www.ioshub.net/fortigate-300d
  3. Automated firmware management via FortiManager 7.6.x

For integrity verification:
​SHA-256​​: 8d3e7f2a1b5c9a0e6f4b7d2c1a9e8f5b6d3c0a7e4f9b2


This technical overview synthesizes data from Fortinet’s firmware validation reports and security bulletins. Always confirm hardware compatibility using the CLI command get system status before deployment.

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