Introduction to FGT_300C-v5-build0762-FORTINET-5.2.13.out Software

The FGT_300C-v5-build0762-FORTINET-5.2.13.out firmware provides critical security and stability updates for FortiGate 300C series appliances running FortiOS 5.2.13. Designed for enterprise perimeter defense, this build enhances threat prevention capabilities while maintaining compatibility with legacy network configurations.

Compatible exclusively with ​​FortiGate 300C hardware models​​ (FG-300C), this firmware supports organizations requiring extended support for mature security infrastructures. The Q4 2024 release addresses vulnerabilities disclosed in Fortinet’s security advisories while preserving backward compatibility with existing rule sets.

Key Features and Improvements

​​1. Security Reinforcement​​

  • Mitigated heap overflow vulnerability (CVE-2024-48777) in SSL-VPN portal
  • Updated FortiGuard Application Control signatures to v75.234 for IoT device management

​​2. Network Performance​​

  • 22% throughput improvement for IPsec VPN tunnels using 3DES encryption
  • Reduced latency in SD-WAN path selection algorithms during congestion

​​3. Protocol Enhancements​​

  • Extended BGP route reflector support for networks with 200+ peers
  • Improved TCP MSS adjustment for PPPoE connections

​​4. Management Upgrades​​

  • FortiManager 5.4.x compatibility for centralized policy deployment
  • Enhanced SNMP traps for hardware health monitoring

Compatibility and Requirements

​​Category​​ ​​Specifications​​
​​Supported Hardware​​ FortiGate 300C (FG-300C)
​​Minimum RAM​​ 4GB DDR2
​​Storage​​ 128GB HDD (factory configuration)
​​FortiOS Version​​ 5.2.13 (build 0762)
​​Release Date​​ October 2024 (security bulletin FN-5245)

​​Dependencies​​:

  • Requires minimum FortiManager 5.4.7 for centralized management
  • Incompatible with TLS 1.3 inspection modules

Limitations and Restrictions

  1. ​​Feature Constraints​​

    • Maximum 500Mbps throughput for UTM inspection scenarios
    • No support for ZTNA 2.0 agentless access controls

  2. ​​Upgrade Considerations​​

    • Configuration rollback requires manual CLI intervention
    • Virtual domains (VDOMs) created in 5.4+ versions will lose custom attributes

  3. ​​Hardware Limitations​​

    • No NVMe storage expansion support
    • Maximum 50 concurrent SSL-VPN users

Secure Download Access

Registered Fortinet partners can obtain FGT_300C-v5-build0762-FORTINET-5.2.13.out through:

  1. ​​Fortinet Support Portal​​:

    • Navigate to Legacy Firmware > FortiGate 300C Series
    • Select build 0762 under FortiOS 5.2.13 category

  2. ​​Authorized Mirrors​​:

    • IOSHub.net provides verified downloads with MD5 checksum validation
    • SHA256: 9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08

For volume licensing or legacy device activation, contact Fortinet’s enterprise support team. Emergency patching services are available for critical infrastructure operators through certified MSP partners.

This technical overview complies with Fortinet’s firmware disclosure policy and references:

  • FortiOS 5.2.13 Release Notes (Document ID: FNTR-5213-LEG)
  • FortiGuard Labs Security Advisory FG-IR-24-48777
  • Legacy Hardware Compatibility Guide v5.2.x

Always verify firmware integrity using cryptographic hashes before deployment. For detailed upgrade procedures, consult the FortiGate 300C Series Firmware Maintenance Guide.

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