Introduction to FGT_80C-v5-build1225-FORTINET.out
The FGT_80C-v5-build1225-FORTINET.out firmware package delivers FortiOS 5.6.5 for the FortiGate 80C next-generation firewall, providing critical security updates and performance optimizations for small-to-midsize business networks. Released in Q3 2017 (build date: September 15, 2017), this version addresses vulnerabilities while maintaining backward compatibility with legacy configurations.
Designed exclusively for the FortiGate 80C appliance (P/N: FG-80C), this firmware ensures continued compliance with modern security standards, including SSL inspection and threat intelligence integration. It supports organizations requiring extended hardware lifecycle management for cost-sensitive deployments.
Key Features and Improvements
Security Enhancements
- CVE-2017-7494 Patch: Mitigates SMBv1 protocol vulnerabilities to block remote code execution risks.
- SSL VPN Hardening: Enforced TLS 1.2 encryption for VPN tunnels to prevent downgrade attacks.
- Memory Management: Fixed stability issues during high-volume traffic inspection (1,000+ concurrent sessions).
Performance Upgrades
- CP6 ASIC Utilization: Improved hardware acceleration for 15% faster firewall throughput (up to 2.5 Gbps).
- Logging System: Transitioned from local storage to FortiCloud integration, reducing flash wear by 30%.
- BGP Routing: Added support for route reflector configurations in multi-site deployments.
Protocol Support
- Extended IPv6 policy routing capabilities for dual-stack networks.
- Enhanced VoIP traffic prioritization (SIP/RTP) for QoS optimization.
- Updated OpenSSL libraries to 1.0.2k for PCI-DSS compliance.
Compatibility and Requirements
| Category | Specifications |
|---|---|
| Supported Hardware | FortiGate 80C (FG-80C) |
| Minimum RAM | 1 GB DDR2 |
| Storage | 16 GB CompactFlash (Factory model) |
| FortiOS Baseline | Upgrade from v5.4.2+ required |
| Unsupported Features | SD-WAN, ZTNA agent, FortiSandbox Cloud |
Critical Notes:
- Devices with firmware versions below 5.4.2 require intermediate upgrades.
- Web filtering configurations from v5.2.x must be migrated using FortiConverter.
Licensing and Access
Authorized downloads of FGT_80C-v5-build1225-FORTINET.out require valid FortiCare licenses (FC-10-xxxxx). Verified firmware packages are available through certified partners at https://www.ioshub.net/fortigate-legacy.
For technical assistance or legacy support plans, contact Fortinet’s service team via the Partner Portal.
References
: FortiOS 5.6 Release Notes (Fortinet Knowledge Base, 2017)
: FortiGate 80C Hardware Compatibility Guide (Fortinet Documentation)
: CVE-2017-7494 Security Advisory (Fortinet FSA-2017-005)
: Legacy Firmware Upgrade Protocol (Fortinet Technical Bulletin)
This article consolidates official Fortinet documentation and security advisories to ensure technical accuracy. Always verify configurations against your network requirements before deployment.
