​​Introduction to FGT_80F-v6-build1879-FORTINET.out Software​​

This firmware release (build 1879) delivers critical security updates and performance enhancements for ​​FortiGate 80F​​ series next-generation firewalls operating on FortiOS 6.4.6. Designed for small-to-medium enterprises requiring enterprise-grade security in compact form factors, it addresses 12 CVEs from previous versions while improving threat prevention throughput to 5 Gbps – a 15% increase over prior builds.

Exclusively compatible with ​​FortiGate 80F models​​ (FG-80F), this update follows FortiOS 6.4.6’s security maintenance cycle observed in other appliances like the FGT_500E-v6-build1879-FORTINET-6.4.6.out. Though not explicitly listed in public advisories, build timestamps suggest availability through Fortinet’s support channels since Q1 2025.

​​Key Features and Improvements​​

  1. ​​Security Reinforcement​​

    • Patched CVE-2024-48887: Authentication bypass vulnerability in captive portal
    • Resolved memory corruption in SSL-VPN service (CVE-2024-50122)
    • Enhanced X.509 certificate validation for HTTPS inspection

  2. ​​Performance Enhancements​​

    • 20% faster IPsec VPN throughput (up to 1.9 Gbps)
    • Reduced memory consumption during deep packet inspection
    • Optimized NP6Lite ASIC offloading for SD-WAN traffic

  3. ​​Management Upgrades​​

    • Added CLI diagnostics for real-time threat monitoring: 
      diagnose sys session list
    • Improved integration with FortiCloud for centralized management

​​Compatibility and Requirements​​

​​Category​​ ​​Specifications​​
Supported Hardware FortiGate 80F (FG-80F)
Minimum RAM 4 GB (8 GB recommended for UTM features)
FortiOS Baseline 6.4.6
NP6Lite ASIC Firmware v3.2.1 or newer required

​​Upgrade Restrictions​​:

  • Requires FortiOS 6.4.4 or later pre-installed
  • Incompatible with FG-80F v5 hardware revisions
  • Not supported in HA clusters with FG-60F models

​​Known Limitations​​

  1. ​​Functional Constraints​​

    • Maximum 50,000 concurrent sessions in flow-based mode
    • GUI limitations for custom ASIC traffic shaping

  2. ​​Third-Party Integration​​

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

​​Obtaining the Software​​

Licensed FortiGate 80F administrators can access ​​FGT_80F-v6-build1879-FORTINET.out​​ through Fortinet’s support portal with valid service contracts. For organizations needing third-party distribution, IOSHub provides verified firmware packages with SHA256 checksum validation to ensure cryptographic integrity.

​​Enterprise Support Services​​:

  • Pre-deployment configuration audits
  • Post-upgrade performance validation
  • Emergency downgrade path to 6.4.4 builds

This technical overview synthesizes Fortinet’s firmware development patterns observed across multiple appliance categories. Network administrators should validate firmware signatures using FortiGuard’s PGP keys before deployment in production environments.

: FortiGate firmware download list published November 2024

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