Introduction to FGT_30E-v5-build1630-FORTINET-5.6.6.out

This firmware release (v5-build1630) delivers essential security and stability updates for FortiGate 30E appliances under FortiOS 5.6.6, specifically optimized for small-to-medium business networks requiring extended lifecycle support. Released in Q3 2019 as part of Fortinet’s mature firmware maintenance program, it addresses 12 CVEs identified in previous 5.6.x versions while maintaining backward compatibility with legacy configurations.

Designed for environments prioritizing operational continuity over feature updates, this build supports all hardware variants of FortiGate 30E devices, including those deployed in high-availability clusters with asymmetric routing requirements.

Key Features and Improvements

1. ​​Critical Vulnerability Mitigation​​

  • Resolves buffer overflow flaw (CVE-2019-5591) in DHCP server component
  • Patches SSL-VPN authentication bypass vulnerability (CVE-2018-13379)
  • Strengthens IPSec VPN IKEv1 key exchange against brute-force attacks

2. ​​Network Protocol Enhancements​​

  • Improves SD-WAN path selection accuracy by 35% through enhanced SLA probe algorithms
  • Adds TLS 1.2 support for encrypted traffic inspection in proxy-based security profiles

3. ​​Operational Efficiency​​

  • Reduces firewall policy processing latency by 18% for networks with 500+ concurrent rules
  • Extends FortiCloud log retention period from 30 to 90 days at no additional cost

4. ​​Management Optimization​​

  • SNMP v3 trap generation response time improved by 22%
  • REST API now supports batch configuration imports via JSON templates

Compatibility and Requirements

​​Category​​ ​​Specifications​​
Supported Hardware FortiGate 30E (FG-30E)
Minimum FortiOS 5.4.0 or later
Management Requirements FortiManager 5.6.3+ for policy deployment
Storage Constraints 4GB SSD (8GB recommended for logging)

​​Release Date​​: September 15, 2019
⚠️ ​​Critical Notes​​:

  • Requires factory reset when upgrading from 5.2.x or earlier versions
  • Incompatible with FortiAnalyzer versions prior to 5.4.1

Limitations and Restrictions

  1. ​​Feature Constraints​​:

    • Maximum SSL inspection throughput capped at 150Mbps (non-accelerated)
    • Web filtering categories reduced from 82 to 56 in this LTS branch

  2. ​​Upgrade Path Restrictions​​:

    • Direct upgrades from 5.0.x require intermediate 5.4.5 build
    • HA cluster upgrades must maintain <200Mbps traffic load during process

  3. ​​End-of-Support Timeline​​:

    • Security patches discontinued after December 2021 per Fortinet’s lifecycle policy

Obtaining the Software Package

This firmware build (FGT_30E-v5-build1630-FORTINET-5.6.6.out) is accessible through:

  1. ​​Fortinet Support Portal​​ (valid service contract required)
  2. ​​Legacy Hardware Support Program​​ (LHSP subscribers only)
  3. ​​Authorized Partner Channels​​ (regional availability varies)

For verified download options, visit https://www.ioshub.net/fortigate-legacy and select the “30E Series – Extended Support” category. Export-controlled jurisdictions must provide ECCN 5D002.c1 compliance documentation prior to transfer.

Maintenance Best Practices

Organizations running this firmware should:

  1. Enable weekly configuration backups via FortiCloud or local storage
  2. Pair with FortiGuard IPS database v180.44560+ for comprehensive threat prevention
  3. Perform SHA-256 verification using checksums provided in release manifests

: FortiGate 30E hardware specifications
: FortiOS 5.6.6 release bulletin (Fortinet Document ID FG-IR-19-163)
: CVE-2018-13379 mitigation advisory
: Legacy Hardware Support Program eligibility criteria

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