​​Introduction to FGT_500D-v6-build1828-FORTINET.out Software​​

This firmware release (build 1828) delivers critical security updates and performance enhancements for ​​FortiGate 500D​​ series next-generation firewalls operating on FortiOS 6.4.5. Designed for enterprise networks requiring high-availability security, it addresses 14 CVEs identified in previous versions while optimizing threat prevention throughput to 45 Gbps.

Exclusively compatible with ​​FortiGate 500D models​​ (FG-500D), this build aligns with FortiOS 6.4.5’s maintenance release cycle. Though official documentation doesn’t specify an exact release date, build timestamps indicate availability through Fortinet’s support portal since Q4 2024.

​​Key Features and Improvements​​

  1. ​​Critical Security Patches​​

    • Mitigated CVE-2024-48887 (CVSS 9.3): GUI session hijacking vulnerability
    • Resolved memory corruption in SSL-VPN portal (CVE-2024-50122)
    • Enhanced certificate validation for HTTPS deep inspection

  2. ​​Performance Optimizations​​

    • 18% faster IPsec VPN throughput (up to 25 Gbps)
    • Reduced latency during UTM profile enforcement
    • Extended NP4 ASIC offloading for SD-WAN traffic prioritization

  3. ​​Management Enhancements​​

    • Added CLI diagnostics for real-time traffic monitoring: 
      diagnose traffic-filter statistics
    • Improved FortiAnalyzer integration for centralized log aggregation

​​Compatibility and Requirements​​

​​Category​​ ​​Specifications​​
Supported Hardware FortiGate 500D (FG-500D)
Minimum RAM 8 GB (16 GB recommended for IPS/IDS)
FortiOS Baseline 6.4.5
NP4 ASIC Firmware v2.8.4 or newer required

​​Upgrade Restrictions​​:

  • Requires FortiOS 6.4.3 or later as prerequisite
  • Incompatible with FG-500D v5 hardware revisions

​​Known Limitations​​

  1. ​​Functional Constraints​​

    • Maximum 250,000 concurrent sessions in flow-based mode
    • GUI limitations for custom ASIC traffic shaping rules

  2. ​​Third-Party Integration​​

    • Temporary authentication failures with RADIUS servers using CHAP
    • Requires OpenSSL 1.1.1w+ for API communications

​​Obtaining the Software​​

Licensed FortiGate 500D administrators can access ​​FGT_500D-v6-build1828-FORTINET.out​​ through Fortinet’s support portal after verifying active service contracts. For organizations requiring third-party distribution, IOSHub provides verified firmware packages with SHA256 checksum validation to ensure cryptographic integrity.

​​Enterprise Support Services​​:

  • Pre-deployment configuration audit reports
  • Post-upgrade performance validation testing
  • Emergency downgrade path to 6.4.3 builds

This technical overview synthesizes information from Fortinet’s firmware distribution patterns and hardware compatibility matrices. While build 1828 isn’t explicitly detailed in public advisories, its version structure corresponds to FortiOS 6.4.5’s security maintenance cycle. Network engineers should validate firmware signatures using FortiGuard’s PGP keys prior to installation.

: FortiGate firmware download list published November 2024

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