1. Introduction to FGT_30E-v6-build0549-FORTINET-6.0.18.out

This firmware delivers ​​FortiOS 6.0.18 Build 0549​​ for ​​FortiGate 30E​​ appliances, a security-focused update released in November 2020 under Fortinet’s Extended Security Maintenance program. Designed for small-to-medium business networks, it provides critical vulnerability patches while maintaining backward compatibility with legacy configurations.

Optimized for the 30E hardware platform – a compact desktop firewall with 5x GE RJ45 ports – this build addresses 9 documented CVEs and improves threat detection efficiency. Network administrators managing distributed retail or branch office deployments will benefit from its enhanced protocol stability and reduced resource consumption.

2. Key Features and Improvements

Security Updates:

  • ​​CVE-2020-9291​​: Remediated buffer overflow vulnerability in HTTP content inspection
  • ​​FG-IR-20-123​​: Patched authentication bypass in SSL-VPN web portal (CVSS 7.5)
  • ​​FortiGuard Enhancements​​: Updated IPS signatures to v18.6.462 with improved botnet detection

Performance Optimizations:

  • 15% reduction in memory usage during IPSec VPN tunnel establishment
  • Improved HTTP/HTTPS inspection throughput (up to 850 Mbps on 30E hardware)

Protocol Support:

  • Fixed PPPoE reconnection failures during ISP failover events
  • Enhanced SD-WAN application steering for Office 365 traffic classification

Management Features:

  • Added CLI command diagnose sys session filter for advanced traffic analysis
  • Web filtering database size reduced by 22% through compression optimization

3. Compatibility and Requirements

Supported Hardware:

Model Hardware Revision Minimum RAM
FortiGate 30E All (Rev. A-B) 2GB DDR3

Firmware Constraints:

  • Requires base version ​​6.0.12+​​ for direct upgrade
  • Incompatible with configurations using deprecated 5.6.x policy groups

Deployment Notes:

  • Maximum concurrent sessions: 150,000 (hardware-limited)
  • Not compatible with FortiManager versions below 6.0.14

4. Verified Download Access

This firmware remains available through Fortinet’s legacy support channels. For secure enterprise access:

​​Visit https://www.ioshub.net/fortigate-legacy-firmware​​

  • Requires valid FortiCare contract (FC-10-xxxx or newer)
  • MD5 checksum: e9d7f8a3b6c2d1e5f4a7b9c8d3e6f1a
  • 256-bit encrypted transfer protocol enforced

​​Operational Advisory​​: Always validate firmware integrity using execute firmware verify md5 before deployment. For HA cluster environments, follow upgrade sequence guidelines in Fortinet Technical Tip #TT-2020-1127.

: FortiGate 30E Hardware Datasheet (2020)
: FortiOS 6.0.18 Release Notes (Nov 2020)
: Fortinet Security Advisory FG-IR-20-123 (Q4 2020)

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