FortiGate-3815D
Fortinet FortiGate 3815D — Fortinet FortiGate-3815D next-generation firewall
Lifecycle position
Options from here
Keep it in production past the OEM cutoff with an independent maintainer.
Buy spares now, while units still circulate on the secondary market.
It is unsupported today — set a migration timeline and budget.
Low-criticality role — document the risk, harden backups, retire on your terms.
Other SKUs in FortiGate 3815D
FortiGate-3815D — questions
Is the Fortinet FortiGate-3815D still supported?
No. Fortinet's last date of support for FortiGate-3815D was Jan 2025 (per the Fortinet end-of-sale bulletin) — it is past end of service life.
When did the FortiGate-3815D reach end of sale?
FortiGate-3815D reached end of sale Jan 2020, per the Fortinet end-of-sale bulletin.
What is the last date of support (EOSL) for the FortiGate-3815D?
Jan 2025 — per the Fortinet end-of-sale bulletin.
Can the FortiGate-3815D be maintained after Fortinet support ends?
After the last date of support, FortiGate-3815D units can often be kept in production through third-party maintenance providers. Fortinet no longer issues software fixes, support, or hardware replacement for it.