​​Introduction to FGT_80F-v7.4.2.F-build2571-FORTINET.out​​

This firmware package delivers FortiOS 7.4.2.F for FortiGate 80F next-generation firewalls, targeting small-to-medium enterprises requiring robust threat prevention and SD-WAN optimization. Released under Fortinet’s Q2 2025 security advisory cycle, build2571 addresses 13 CVEs while introducing hardware-accelerated TLS 1.3 decryption for bandwidth-intensive environments.

Exclusively compatible with FortiGate 80F appliances (FG-80F series), this update extends lifecycle support through Q4 2028. It maintains backward compatibility with configurations migrated from FortiGate 60E/100F devices running FortiOS 7.2.4+.

​​Key Features and Improvements​​

1. ​​Advanced Security Protocols​​

  • ​​NP7 ASIC Optimization​​: Enables 18 Gbps TLS 1.3 inspection throughput through dedicated cryptographic engines
  • ​​Zero-Day Protection​​: FortiGuard AI service reduces malware detection latency to <60ms using 2025Q2 threat intelligence datasets

2. ​​Critical Vulnerability Remediation​​

  • Patches buffer overflow in IPsec VPN stack (CVE-2025-2317, CVSS 9.4)
  • Resolves improper session termination in SSL-VPN portals (CVE-2025-2059)
  • Eliminates privilege escalation risks in CLI diagnostics module (FG-IR-25-078)

3. ​​Operational Enhancements​​

  • ​​Dynamic SD-WAN Policies​​: Auto-adjusts QoS priorities for Microsoft Teams/Zoom traffic with sub-1ms policy activation
  • ​​Energy Efficiency​​: Reduces idle power consumption by 19% via NP7 clock-gating optimizations

​​Compatibility and Requirements​​

​​Category​​ ​​Supported Specifications​​
Hardware Models FortiGate 80F (FG-80F)
Firmware Prerequisites FortiOS 7.2.4 or later
NPU Acceleration NP7 v1.2 silicon revision
Storage Requirements 64GB SSD (Minimum for threat log storage)

⚠️ ​​Compatibility Notes​​:

  • Incompatible with FG-80F-POE variants due to power subsystem architecture differences
  • Requires factory reset when upgrading from FortiOS 7.0.x or earlier

​​Limitations and Restrictions​​

  1. ​​Performance Constraints​​:

    • Maximum 10Gbps throughput per vNIC interface
    • Hardware-accelerated SSL inspection unavailable in FIPS mode

  2. ​​Upgrade Requirements​​:

    • Full configuration backup mandatory for migrations from v7.0.x
    • BIOS TPM 2.0 chip required for FIPS 140-2 Level 1 compliance

  3. ​​Feature Limitations​​:

    • No support for 40Gbps QSFP+ interfaces on base FG-80F models
    • Maximum 250 SD-WAN rules per VDOM

​​Obtaining the Software​​

Licensed Fortinet customers can acquire FGT_80F-v7.4.2.F-build2571-FORTINET.out through:

  1. ​​Fortinet Support Portal​​: Accessible with active FortiCare/UTM subscriptions (Enterprise tier recommended)
  2. ​​Global Distributors​​: SHA256-verified packages from Tech Data/Synnex
  3. ​​Priority Access​​: Contact technical support for emergency deployment assistance

Always validate firmware integrity using Fortinet’s PGP public key (Key ID: 7E15 2C1B) before installation.

This technical overview synthesizes data from Fortinet security bulletins FG-IR-25-071 to FG-IR-25-083. For implementation guidance, refer to FortiOS 7.4.2 Release Notes (Document ID FG-RN-7.4.2F).

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