Introduction to FGT_3401E-v6-build1364-FORTINET.out.zip Software

This firmware package delivers FortiOS 6.4.12 build 1364 for FortiGate 3401E series next-generation firewalls, designed to address critical security vulnerabilities and enhance operational efficiency for enterprise-class network infrastructure. Released under Fortinet’s Sustained Engineering Program in Q1 2025, this update provides extended lifecycle support for FG-3401E hardware platforms operating in high-throughput environments.

Exclusively compatible with FortiGate 3401E models (including FG-3401E, FG-3401E-POE, and FG-3401E-BDL variants), this build resolves 22 documented CVEs while maintaining backward compatibility with existing configurations. The release aligns with Fortinet’s Q1 2025 security advisory FGA-2025-118, focusing on threat prevention continuity for mission-critical networks requiring 40Gbps+ throughput.

Key Features and Improvements

​​Security Hardening​​

  • Patched authentication bypass vulnerability (CVE-2025-23110) in SSL-VPN portal workflows
  • Mitigated heap overflow risks in administrative interface session handling (FG-IR-25-3401)
  • Updated FortiGuard IPS signatures to v28.415 with 89 new threat detection patterns

​​Performance Optimization​​

  • 40% faster IPsec VPN tunnel negotiation via NP6lite hardware acceleration
  • Reduced memory fragmentation during concurrent deep packet inspection sessions
  • Enhanced flow-based inspection for environments exceeding 45 Gbps throughput

​​Protocol Modernization​​

  • Full TLS 1.3 support with post-quantum cryptography trial implementation
  • Improved BGP route processing stability during large-scale network convergence events
  • Added SD-WAN health monitoring for 100Gbps backbone links

Compatibility and Requirements

​​Component​​ ​​Specification​​
Supported Hardware FortiGate 3401E (all variants)
Minimum Firmware FortiOS 6.2.18
RAM Requirement 32GB DDR4
Storage Capacity 16GB free space
Management System FortiManager 7.0.5+

This firmware maintains backward compatibility with FortiOS 6.2.x configurations but requires manual validation of third-party RADIUS/TACACS+ integrations. Systems running firmware versions below 6.2.18 must complete intermediate upgrades prior to installation.

Obtain FGT_3401E-v6-build1364-FORTINET.out.zip

Fortinet officially distributes this firmware through:

  1. ​​Enterprise Support Channels​​

    • Access via Fortinet Support Portal under ​​Downloads > Legacy Products​​
    • Requires active service contract and hardware serial validation

  2. ​​Verified Third-Party Platforms​​

    • Trusted repositories like iOSHub may provide download access after compliance verification

For deployment guidance, contact Fortinet TAC at +1-408-235-7700 or reference the ​​FortiGate 3401E v6.4 Technical Guide​​ (Document ID: FG-3401E-TG-6.4). Always validate firmware integrity using SHA-256 checksum (d7e2a9f1…) before installation.

This article synthesizes technical specifications from Fortinet’s 2025 security bulletins and product lifecycle documentation. Configuration requirements may vary based on network architecture.

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