FortiGate 3815D NEBS End of Life
Understand when support ends and how to future-proof your FortiGate 3815D NEBS End of Life deployment.

The FortiGate-3815D-NEBS has reached its end of life and will eventually stop receiving full lifecycle support. If the FortiGate-3815D-NEBS is deployed in carrier or industrial environments, begin planning for an upgrade path that preserves regulatory and operational requirements.
What this means for your organization
- A chance to modernize your security posture and prepare for future growth.
- Opportunity to benefit from improved performance, efficiency, and protection.
- Align IT infrastructure with compliance, scalability, and long-term ROI.
FortiGate-3815D-NEBS Date & Status
Here’s what you need to know about FortiGate-3815D-NEBS lifecycle status.
- End of Life (EOL): 1/14/24

FortiGate-3815D-NEBS Replacement
Replacing the FortiGate-3815D-NEBS isn’t just about swapping hardware. It’s an opportunity to reassess architecture, address emerging threats, and align with current operational and cloud-first requirements.
Role of the FortiGate-3815D-NEBS:
Engineeredfor carrier-grade and ruggedized environments, providing high-availability security and continuity for telco and critical infrastructure networks.
Evolving Traffic Patterns:
5G backhaul, low-latency edge services, and massive device densities require tighter SLAs, deterministic performance, and enhanced segmentation.
Modern Demands:
Operators expect automation, multi-tenancy, programmable APIs, and deep telemetry to support rapid onboarding and proactive maintenance.
Strategic Upgrade:
Select NEBS-compliant or equivalent platforms with enhanced throughput, telemetry, and automation. Use staged migrations with carrier-grade testing to protect service continuity.
Understanding Fortinet's EOL Policy | End of Life Risks
Every Fortinet product follows a defined lifecycle, moving through the following stages:

- General Availability (GA): The product is released and actively sold and supported.
- End of Sale (EOS): The device is no longer available for purchase from Fortinet or authorized partners.
- End of Life (EOL): Feature development and most firmware updates stop.
- End of Support (EOSL): Fortinet ends all official support, security patches, and RMA services.
Why This Matters for Your Business
Understanding where your hardware sits in this lifecycle helps you:
- Plan timely upgrades before critical support ends.
- Ensure security compliance and avoid audit failures.
- Maintain operational continuity with fully supported hardware.
Risks of Continuing to Use EOL Hardware
When a firewall or security appliance reaches End of Life, the risks of keeping it in production increase dramatically
No Security Patches
Outdated devices won’t receive updates, leaving your network exposed to new vulnerabilities.
Lack of Vendor Support
Once support ends, there’s no access to Fortinet’s technical resources or RMA services.
Compliance Failures
Auditors may flag unsupported hardware as a violation of security and industry standards.
Operational Instability
Legacy devices may struggle with modern workloads, encrypted traffic, and cloud integrations.
How Aseva Helps with Fortinet EOL
Here’s how Aseva ensures a smooth and secure FortiGate lifecycle transition.
Lifecycle Planning:
Track Fortinet GA → EOS → EOL → EOSL.
Seamless Migration:
Dedicated engineers ensure minimal downtime.
Future-Proof Security:
Replace with next-gen models aligned to your needs.
Why Choose Aseva for Fortinet End of Life Support?
Choosing the right partner is critical. With Aseva, you gain a trusted advisor with deep expertise in Fortinet and broader cybersecurity lifecycle management. We help reduce risk, ensure compliance, and maximize ROI on your IT investments.