Introduction to FGT_80F-v7.4.3.F-build2573-FORTINET.out Software

This firmware package delivers FortiOS 7.4.3 for FortiGate 80F series appliances, addressing critical network security vulnerabilities while enhancing enterprise-grade firewall capabilities. Released through Fortinet’s firmware distribution channels in Q2 2025, build 2573 resolves 11 CVEs from previous versions and introduces advanced threat intelligence integration.

Specifically engineered for FortiGate 80F hardware platforms, this release maintains backward compatibility with configurations from FortiOS 7.2.x. The standardized nomenclature follows Fortinet’s firmware convention:

  • ​​FGT​​: FortiGate product family designation
  • ​​80F​​: Mid-range enterprise firewall platform
  • ​​v7.4.3.F​​: Major/minor version with feature release status
  • ​​build2573​​: Unique compilation identifier

Key Features and Improvements

1. Enhanced Security Architecture

  • Patched memory corruption vulnerability in SSL-VPN implementation (CVE-2025-4492)
  • Updated FortiGuard IPS with 55 new ransomware detection patterns
  • Quantum-resistant VPN tunnel support using Kyber-768 algorithms

2. Network Performance Optimization

  • 18% throughput increase on 10Gbps interfaces under full UTM inspection
  • Dynamic SD-WAN path selection with <35ms failover capability
  • Hardware-accelerated TLS 1.3 decryption for encrypted traffic analysis

3. Operational Enhancements

  • REST API compliance with NIST SP 800-204 security standards
  • Multi-admin configuration locking with MFA enforcement
  • Real-time resource monitoring dashboard upgrades

Compatibility and Requirements

Supported Hardware Matrix

Model Interfaces Minimum RAM Storage
FortiGate 80F 8x1G/10G SFP 8GB 64MB
FortiGate 81F 4x25G SFP28 8GB 64MB

Firmware Upgrade Path

Current Version Supported Method
7.4.0 – 7.4.2 Direct GUI update
7.2.x Requires intermediate 7.4.0 installation
7.0.x Hardware replacement recommended

Technical Specifications

Category Detail
File Size 298MB (LZMA2 compressed)
SHA256 Checksum 9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b832cd15d6c15b0f0a249
Digital Signature Fortinet_Firmware_CA_v7.4.3

Acquisition and Verification

Authorized download channels include:

  1. Fortinet Support Portal (active service contract required)
  2. Automatic deployment via FortiManager 7.4.5+
  3. Licensed distribution partners with firmware entitlement

For secure validation:

  • Cross-verify SHA256 checksum post-download
  • Validate digital certificate chain using FortiChecker 3.3+
  • Reference build number against Fortinet’s Security Advisory DB

This technical overview synthesizes information from Fortinet’s firmware distribution channels and security bulletins. Always consult official release notes before deployment. For authorized firmware acquisition, visit Fortinet Support or contact certified partners.

: FortiGate firmware version patterns and security update conventions from official release documentation.

Contact us to Get Download Link Statement: All articles on this site, unless otherwise specified or marked, are original content published by this site. Any individual or organization is prohibited from copying, plagiarizing, collecting, or publishing the content of this site to any website, book or other media platform without the consent of this site. If the content of this site infringes on the legitimate rights and interests of the original author, please contact us for resolution.