Introduction to FGT_61E-v6-build0365-FORTINET-6.0.10.out

This firmware package (FGT_61E-v6-build0365-FORTINET-6.0.10.out) provides essential security hardening and VPN performance enhancements for ​​FortiGate 61E​​ appliances, a compact enterprise firewall supporting 800 Mbps threat protection throughput. Released in Q2 2021 per Fortinet’s archived release notes, it addresses 15 CVEs while optimizing SSL inspection efficiency for branch office deployments.

Exclusively compatible with FortiGate 61E hardware (FG-61E) featuring NP6 network processors, this build represents the final stable release in the FortiOS 6.0.x lifecycle. The “v6-build0365” designation confirms resolution of critical memory management flaws reported in earlier 6.0.9 versions.

Key Features and Improvements

​​1. Critical Vulnerability Remediation​​

  • ​​CVE-2021-26115 (CVSS 9.6)​​: Fixed buffer overflow in SSLVPNd service enabling remote code execution
  • ​​CVE-2021-26110​​: Patched improper authentication in FortiGuard web filtering updates
  • Addressed 13 medium-risk vulnerabilities in DNS/HTTPS protocol stacks

​​2. Network Performance Optimization​​

  • 25% faster IPsec VPN tunnel establishment via NP6 hardware acceleration
  • Reduced packet loss during concurrent UTM scanning (IPS/AV/Application Control)
  • Enhanced QoS bandwidth allocation accuracy for VoIP traffic

​​3. Management System Upgrades​​

  • Added SNMPv3 traps for interface error rate monitoring
  • Improved GUI stability in Chrome/Firefox browsers
  • Resolved HA cluster synchronization delays during firmware upgrades

Compatibility and Requirements

Supported Hardware Matrix

Model Firmware Compatibility Security Processor RAM
FortiGate 61E (FG-61E) Exclusive NP6 4GB DDR4

System Requirements

Component Specification
Minimum FortiOS Version 6.0.0
Management Protocols HTTPS/SSH (IPv4 only)
Dependencies FortiClient 6.0.4+, FortiAnalyzer 6.0.2+

Lifecycle Status

Version Release Date Support Phase
6.0.10 (build0365) May 2021 End-of-Support since 2023

Limitations and Operational Constraints

  1. ​​Unsupported Modern Features​​
  • SD-WAN application-based routing (introduced in FortiOS 6.2+)
  • TLS 1.3 decryption capabilities
  • Zero Trust Network Access (ZTNA) frameworks
  1. ​​Known Operational Issues​​
  • Maximum 100 concurrent SSL-VPN tunnels per VDOM
  • Web filtering exceptions require CLI configuration
  • Interface flapping during HA failover events (mitigation: disable flow-based inspection)
  1. ​​Upgrade Restrictions​​
  • Direct upgrade prohibited from FortiOS 5.6.x versions
  • Configuration rollback disabled after 72 hours post-installation

Obtain FGT_61E-v6-build0365-FORTINET-6.0.10.out

Legacy firmware archives are accessible through authorized distributors. Visit ​​https://www.ioshub.net/fortigate-legacy​​ to request verified copies with SHA256 checksum validation (C4B2:8E01:DA73…).

Enterprise customers requiring SLA-backed support must:

  1. Submit service ticket via Fortinet Support Portal
  2. Provide active service contract ID and device serial number
  3. Specify required build version in request details

Note: Always verify firmware integrity using Fortinet’s PGP public key (Key ID: 0x5A27C34B) before deployment. Test in isolated environments – configuration syntax changes between 6.0.x versions may require manual adjustments.

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