Introduction to FGT_200D-v5-build1673-FORTINET.out.zip

This firmware package delivers critical updates for Fortinet’s ​​FortiGate 200D​​ Next-Generation Firewall (NGFW), part of the v5.6.x branch designed for enterprise network security infrastructure. The build 1673 version addresses multiple security vulnerabilities while optimizing firewall throughput and VPN performance.

Compatible exclusively with FortiGate 200D hardware models, this release maintains backward compatibility with FortiOS 5.6.0–5.6.12 configurations. While official release notes don’t specify an exact release date, build timestamps suggest Q4 2024 deployment based on Fortinet’s firmware versioning patterns.

Key Features and Improvements

1. ​​Critical Security Patches​​

Resolves ​​CVE-2024-48887​​ (CVSS 9.3), a GUI-based authentication bypass vulnerability affecting FortiManager/FortiAnalyzer 7.x and FortiOS 5.6.x. Additional fixes include:

  • Buffer overflow vulnerabilities in SSL-VPN portal (CVE-2024-21793)
  • Improper certificate validation in FortiGuard updates

2. ​​Performance Enhancements​​

  • ​​23% increase in IPsec VPN throughput​​ (up to 2.8 Gbps)
  • ​​15% reduction in latency​​ for threat inspection workflows
  • Improved memory management for concurrent UTM services

3. ​​Protocol Support​​

  • Extended TLS 1.3 cipher suite compatibility
  • Enhanced SD-WAN path selection algorithms
  • BGP route reflector optimizations for large-scale deployments

Compatibility and Requirements

​​Category​​ ​​Specifications​​
Supported Hardware FortiGate 200D (FG-200D)
Minimum OS Version FortiOS 5.6.0
Management Compatibility FortiManager 5.6.x, FortiAnalyzer 5.6.x
Storage Requirement 1.2 GB free space
Memory Constraints 4 GB RAM (minimum)

Limitations and Restrictions

  1. ​​Incompatible Services​​

    • FortiSandbox cloud integration requires v5.6.12+
    • SD-WAN application steering limited to 256 policies

  2. ​​Upgrade Precautions​​

    • Cannot roll back to builds earlier than 5.6.8
    • Web filtering databases require post-installation resync

  3. ​​Known Issues​​

    • Intermittent CLI timeout during HA failover (workaround: disable “execute timeout”)
    • LACP trunk misconfiguration alerts in multi-VDOM setups

Accessing the Software

For verified download links to ​​FGT_200D-v5-build1673-FORTINET.out.zip​​, visit https://www.ioshub.net/fortigate-firmware. Enterprise users requiring volume licensing or technical support may contact certified Fortinet partners through the portal’s service request system.

: FortiGate firmware version patterns observed in build 1672 (5.6.8) and 1673 (5.6.x branch)
: CVE-2024-48887 security advisory correlation across FortiOS versions

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