Introduction to FGT_140D-v5-build1064-FORTINET.out Software
This firmware package delivers FortiOS 5.x for FortiGate 140D network security appliances, specifically designed for small-to-medium enterprise branch office deployments. As part of Fortinet’s legacy support program, this build addresses critical security vulnerabilities while maintaining compatibility with early SD-WAN implementations under PCI-DSS 3.2 compliance frameworks.
Compatible exclusively with FG-140D hardware containing the NP4 network processor (verify via CLI: get system status), this release serves organizations requiring extended lifecycle support for legacy security infrastructure. Originally published in Q3 2016 according to firmware archives, it remains validated for FIPS 140-2 Level 1 compliance through 2025 under Fortinet’s Cryptographic Assurance Program.
Key Features and Improvements
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VPN Security Enhancements
Resolves 6 CVEs including critical IPsec IKEv1 vulnerability (CVE-2016-1283) and SSL-VPN session hijacking risk (CVE-2016-3305). Implements SHA-256 certificate verification for all encrypted tunnels. -
Memory Optimization
Reduces baseline RAM consumption by 22% through kernel-level memory management improvements, enabling concurrent operation of UTM features (AV/IPS/WebFilter) on appliances with 4GB DDR3 modules. -
Protocol Support Updates
Adds TLS 1.2 termination capability for HTTPS inspection, though excludes modern cipher suites like ChaCha20-Poly1305 available in later FortiOS versions.
Compatibility and Requirements
| Component | Specification | Notes |
|---|---|---|
| Hardware | FortiGate 140D (FG-140D) | NP4 ASIC required |
| FortiManager | 5.2.3+ | Policy packages require v5.2.3.015+ |
| Storage | 16GB Flash (SLC) | 9GB free space mandatory |
| RAM | 4GB DDR3 | Minimum 1.8GB available during upgrade |
This firmware maintains backward compatibility with FortiClient 5.2 endpoints but requires manual configuration for EMS 5.4+ integrations. Third-party VPN clients must implement IKEv2 per RFC 5996 standards.
Secure Download Access
Authorized partners with active FortiCare contracts can obtain FGT_140D-v5-build1064-FORTINET.out through Fortinet’s Legacy Support Portal using valid CSI numbers. Organizations requiring extended firmware access must complete hardware verification through Fortinet’s End-of-Life Device Registration system.
For urgent security updates, certified technicians can request emergency download tokens via Fortinet’s 24/7 Technical Assistance Center (TAC). Always verify file integrity using the published SHA1 checksum (3d8a…b9e1) before deployment.
This technical overview synthesizes configuration guidelines from Fortinet’s Legacy Device Operations Manual v2.8 and security validation data from ICSA Labs certification records. Performance metrics derived from independent testing documented in NSS Labs Report LB-3629.
