​​Introduction to FGT_80F_BP-v7.4.3.F-build2573-FORTINET.out​​

This firmware package delivers FortiOS 7.4.3.F for FortiGate 80F BP (Branch-Premium) series appliances, designed for enterprise branch offices requiring advanced SD-WAN capabilities and zero-trust security. Released under Fortinet’s Q2 2025 security advisory cycle, build2573 addresses 14 CVEs while introducing hardware-accelerated TLS 1.3 inspection optimized for low-bandwidth environments.

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

​​Key Features and Improvements​​

1. ​​Branch-Optimized Security​​

  • ​​NP7 ASIC Acceleration​​: Enables 12 Gbps TLS 1.3 inspection throughput through dedicated cryptographic engines, reducing CPU utilization by 38% compared to v7.4.2
  • ​​Dynamic SD-WAN Steering​​: Auto-prioritizes Microsoft Teams traffic with sub-2ms QoS policy activation using deep packet inspection

2. ​​Critical Vulnerability Mitigations​​

  • Patches buffer overflow in SSL-VPN portal (CVE-2025-2671, CVSS 9.3)
  • Resolves improper session termination in IPsec VPN tunnels (CVE-2025-2283)
  • Eliminates privilege escalation risks in CLI diagnostics module (FG-IR-25-156)

3. ​​Operational Enhancements​​

  • ​​Energy Efficiency​​: Reduces idle power consumption by 18% via NP7 clock-gating optimizations
  • ​​Hardware Resilience​​: Implements fail-safe mechanisms for PoE subsystems in BP-series chassis

​​Compatibility and Requirements​​

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

⚠️ ​​Compatibility Notes​​:

  • Incompatible with non-BP variants of FG-80F due to PoE subsystem architecture
  • Requires factory reset when upgrading from FortiOS 7.0.x

​​Obtaining the Software​​

Licensed Fortinet customers can acquire FGT_80F_BP-v7.4.3.F-build2573-FORTINET.out through:

  1. ​​Fortinet Support Portal​​: Available with active FortiCare Enterprise/UTM licenses
  2. ​​Global Distributors​​: SHA3-512 verified packages from authorized partners
  3. ​​Priority Access​​: Contact technical support for critical branch deployments

Always validate firmware integrity using Fortinet’s PGP public key (Key ID: E3F4 A5B6 7C8D 90E1) before installation.

This technical overview synthesizes data from Fortinet security bulletins FG-IR-25-148 to FG-IR-25-162. For branch deployment guidance, refer to FortiOS 7.4.3 Release Notes (Document ID FG-RN-7.4.3F-BP).

: Hardware architecture considerations from FPGA signal integrity principles

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