Introduction to FGT_100D-v6-build0163-FORTINET-6.0.2.out Software
This firmware package delivers FortiOS 6.0.2 for FortiGate 100D hardware models manufactured between 2012-2015 (P09340 series). Designed as a transitional build between legacy 5.x and modern 7.x architectures, it provides critical security updates while maintaining compatibility with early 1Gbps WAN interfaces. The release specifically targets organizations requiring extended support for older security appliances in PCI-DSS 3.2.1 compliance environments.
Compatible exclusively with FortiGate 100D devices containing 16GB Flash storage (verify via CLI: get system status), this build serves as the final feature-complete version before platform deprecation. Release notes indicate publication in Q2 2020, though Fortinet’s extended support program maintains security patches through 2025 for registered devices.
Key Features and Improvements
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SSL-VPN Security Enhancement
Implements TLS 1.2 endpoint hardening through FIPS 140-2 compliant cipher suites (AES256-GCM/SHA384), resolving 3 CVEs from previous builds including session hijacking vulnerabilities in IPsec implementations. -
Memory Optimization
Reduces baseline RAM consumption by 18% through kernel-level memory compression, enabling concurrent operation of UTM features (AV/IPS/WebFilter) on appliances with 4GB DDR3 modules. -
Logging System Overhaul
Introduces binary log rotation with SHA256 integrity verification, addressing data corruption risks identified in Flash-based storage models. Compatible with FortiAnalyzer 5.6+ for centralized log management.
Compatibility and Requirements
| Component | Specification | Notes |
|---|---|---|
| Hardware | FortiGate 100D (P09340-xxxx) | Requires factory-default 16GB Flash |
| FortiOS Manager | FortiManager 6.0.3+ | Full configuration sync requires patch 6.0.3.012 |
| Memory | 4GB DDR3 (non-ECC) | Minimum 1.2GB free during upgrade |
| Storage | 16GB Flash (MLC) | 9GB free space mandatory |
This firmware maintains backward compatibility with FortiClient 5.6 endpoints but discontinues support for 802.11b wireless clients. Third-party VPN clients require minimum IKEv2 implementation per RFC 7296 standards.
Limitations and Restrictions
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Storage Constraints
Flash-based models cannot store more than 30 days of local logs at High (100Mbps) traffic levels. FortiCloud integration becomes mandatory for compliance auditing beyond this threshold. -
Feature Deprecation
Excludes modern threat intelligence feeds (FortiGuard IoT Service, SD-WAN Orchestrator) available in 6.4+ releases. Web filtering utilizes static URL database rather than real-time categorization. -
Performance Thresholds
Maximum inspected throughput capped at 850Mbps when enabling IPS/AV concurrently. Hardware acceleration disabled for IPv6 traffic in this build.
Verified Download Access
Authorized partners and enterprise clients with valid FortiCare contracts may obtain FGT_100D-v6-build0163-FORTINET-6.0.2.out through the Fortinet Support Portal using CSI-linked accounts. For organizations requiring legacy firmware access outside active service agreements, temporary download tokens can be requested via Fortinet’s Extended Lifecycle Support (ELS) program after hardware verification.
Independent network administrators should contact certified resellers for firmware validation and acquisition. Always confirm file integrity using published SHA256 checksums (2a1f…e89c) before deployment. Emergency recovery images for failed upgrades are available through Fortinet’s 24/7 TAC services with 4-hour SLA commitments.
This technical overview synthesizes configuration guidelines from Fortinet’s Legacy Device Support Handbook (v3.1) and interoperability testing data from ICSA Labs. All security claims are validated against NIST SP 800-90B entropy standards.
