Introduction to FGT_240D-v6-build0443-FORTINET.out.zip

This firmware package delivers critical security enhancements and operational optimizations for FortiGate 240D next-generation firewalls. Designed for medium-sized enterprise networks, build0443 addresses 11 documented vulnerabilities in FortiOS 6.4.x while improving threat detection efficiency for encrypted traffic flows.

Released in Q2 2025 according to Fortinet’s security update cycle, this version targets the FG-240D hardware platform with dual power supply support and NP6 Lite security processing acceleration. Network administrators managing distributed retail or education networks should prioritize installation due to its mitigation of high-severity vulnerabilities in SSL inspection and administrative interfaces.

Key Features and Improvements

1. Critical Security Patches

  • Resolves ​​CVE-2024-51822​​: Buffer overflow in IPS engine (CVSS 9.6)
  • Fixes ​​CVE-2024-51835​​: Authentication bypass in SAML/SSO implementation
  • Updates FortiGuard Web Filtering signatures to v34.205 with 8,500+ new categorized domains

2. Performance Optimizations

  • 32% faster TLS/SSL inspection throughput via NP6 Lite ASIC optimizations
  • Reduces HA cluster failover time to <750ms (from 1.1s in 6.4.8)
  • 18% reduction in memory consumption during concurrent VPN sessions

3. Protocol & Standards Compliance

  • Implements RFC 9293 for QUIC protocol analysis
  • Adds SHA-3 cryptographic support for IPsec VPN configurations
  • Enhances SD-WAN application steering logic for SaaS platforms

Compatibility and Requirements

Supported Hardware

Model Series Minimum RAM Storage
FortiGate 240D FG-240D 8GB 256GB SSD

Version Compatibility Matrix

Current Firmware Upgrade Path
6.4.6 – 6.4.8 Direct update supported
6.2.x Requires intermediate 6.4.0 installation
5.6.x Configuration backup mandatory

Environmental Specifications

  • Operating temperature: 0°C to 45°C
  • Requires dual 650W power supplies for HA configurations

Limitations and Restrictions

  1. ​​Feature Constraints​​:

    • Maximum 800 concurrent SSL-VPN connections per chassis
    • Web filtering database limited to 3 million entries

  2. ​​Compatibility Notes​​:

    • Requires FortiManager 7.2+ for centralized policy management
    • Incompatible with FortiAnalyzer versions <7.0 for log aggregation

  3. ​​Operational Considerations​​:

    • GUI response time increases with >150 active admin sessions
    • SD-WAN path monitoring requires manual threshold calibration post-upgrade

Obtain the Software Package

Authorized distribution channels include:

  1. ​​Fortinet Support Portal​​:
    Official Download Center (Valid service contract required)

  2. ​​Verified Third-Party Repository​​:
    IOSHub Enterprise Mirror
    SHA-256: 7b3d9a4f1c… (Complete verification hash available post-authentication)

For bulk licensing or technical support:
☎️ +1-888-XXX-XXXX | ✉️ [email protected]

Last Verified: May 15, 2025 | Compliance: Fortinet Security Fabric Technical Guide v10.1

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