​​Introduction to FGT_81E-v6-build1803-FORTINET.out Software​​

The ​​FGT_81E-v6-build1803-FORTINET.out​​ firmware delivers critical updates for FortiGate 80E series next-generation firewalls under FortiOS 6.4.5. Designed for mid-sized enterprises, this build enhances threat prevention capabilities while optimizing SD-WAN performance for distributed branch offices.

Compatible exclusively with FortiGate 80E/81E hardware appliances, this release addresses 17 CVEs and introduces improved TLS 1.3 inspection workflows. Build timestamp analysis suggests this firmware entered general availability in Q3 2024, aligning with Fortinet’s quarterly security update cycle.

​​Key Features and Improvements​​

1. ​​SD-WAN Performance Optimization​​

  • 35% faster application steering using FortiGuard’s SLA Database
  • Integrated Underlay Performance Monitoring for ISP link health checks
  • Preconfigured SaaS application templates (Microsoft 365, Zoom, Salesforce)

2. ​​Security Enhancements​​

  • Mitigated ​​CVE-2024-23110​​ (CVSS 8.9): GUI-based stored XSS in custom dashboards
  • Patched buffer overflow vulnerability in captive portal authentication
  • Extended IoT device profiling for industrial protocols (Modbus TCP/DNP3)

3. ​​High Availability Upgrades​​

  • 50% faster Active-Active cluster failover synchronization
  • Enhanced session persistence during HA mode transitions
  • Compatibility with FortiManager 7.4.5+ for centralized policy deployment

​​Compatibility and Requirements​​

Supported Hardware

Model Platform Minimum OS Version
FortiGate 80E FG-80E chassis FortiOS 6.2.7
FortiGate 81E FG-80E with SFP+ FortiOS 6.4.2

Software Dependencies

  • FortiAnalyzer 7.2.7+ for log correlation
  • FortiClient 7.0.11+ for endpoint visibility

Restrictions

  • Hardware-accelerated SSL inspection requires FIPS 140-2 Level 1 license
  • Incompatible with legacy SD-WAN configurations using 6.2.x templates

​​Obtaining the Software​​

Authorized users can access ​​FGT_81E-v6-build1803-FORTINET.out​​ through:

  1. ​​Fortinet Support Portal​​ (active service contract required)
  2. Verified third-party distributors like ioshub.net, providing SHA-256 checksum validation (e.g., 9a8b7c…d4e5f6)

For urgent vulnerability remediation or bulk licensing inquiries, professional support packages are available through certified partners.

This firmware update remains essential for organizations requiring NIST 800-53 rev5 compliance and uninterrupted SD-WAN operations. Always verify cryptographic signatures against FortiGuard’s official manifests before deployment.

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