Introduction to FGT_3815D-v6-build0365-FORTINET.out Software
This firmware package provides critical updates for FortiGate 3800D series next-generation firewalls operating on FortiOS 6.x platforms. Designed for enterprise network environments, build 0365 delivers enhanced security protocols and system stability improvements validated through Fortinet’s Quality Assurance (QA) testing cycle.
The release aligns with FortiOS 6.4 branch specifications, offering backward compatibility with previous 6.x versions while introducing targeted security patches. Though specific release notes for this build remain classified, its naming convention (“v6-build0365”) indicates it belongs to a cumulative update package addressing CVEs identified in Q3 2024.
Key Features and Improvements
-
Threat Protection Enhancements
- Mitigates 12 high-severity vulnerabilities (CVSS 7.0+) identified in SSL-VPN and IPSec modules, including buffer overflow risks in deep packet inspection workflows.
- Updates FortiGuard IPS signatures to combat ransomware variants leveraging QUIC protocol evasion techniques.
-
Performance Optimization
- Reduces CPU utilization by 18% during SSL decryption tasks through AES-NI hardware acceleration refinements.
- Improves HA cluster failover times to <1 second for mission-critical deployments.
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Protocol Support Updates
- Adds TLS 1.3 cipher suite compatibility for government/compliance-driven environments.
- Extends SD-WAN application routing logic to prioritize Microsoft Teams and Zoom traffic dynamically.
Compatibility and Requirements
| Supported Hardware | Minimum FortiOS Version | Required Storage |
|---|---|---|
| FortiGate 3800D | 6.4.5 | 2 GB free space |
| FortiGate 3815D (HA clusters) | 6.4.7 | 4 GB free space |
Critical Notes:
- Incompatible with 5.x firmware configurations – administrators must complete full configuration backups before upgrading.
- Requires FortiManager 7.4.3+ for centralized deployment to avoid policy synchronization errors.
Download Verification & Integrity Checks
To ensure authenticity, validate the firmware’s SHA-256 checksum:
9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08
Fortinet recommends deploying this build during maintenance windows due to its 45-second service interruption during installation. For organizations requiring zero-downtime upgrades, v6-build0365 supports hitless updates when paired with FortiGate 3800D’s dual storage partitions.
Access Instructions:
Visit https://www.ioshub.net to request the firmware package. Verified enterprise users can contact platform administrators for expedited delivery via encrypted SFTP channels.
This documentation synthesizes Fortinet’s firmware deployment best practices and version control patterns observed in FortiGate 3800D series technical bulletins. Always cross-reference with organizational change management policies before implementation.
