FortiGate-4000S
Fortinet FortiGate 4000S — Fortinet FortiGate-4000S 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.
FortiGate-4000S — questions
Is the Fortinet FortiGate-4000S still supported?
No. Fortinet's last date of support for FortiGate-4000S was Feb 2011 (per the Fortinet end-of-sale bulletin) — it is past end of service life.
When did the FortiGate-4000S reach end of sale?
FortiGate-4000S reached end of sale Feb 2006, per the Fortinet end-of-sale bulletin.
What is the last date of support (EOSL) for the FortiGate-4000S?
Feb 2011 — per the Fortinet end-of-sale bulletin.
Can the FortiGate-4000S be maintained after Fortinet support ends?
After the last date of support, FortiGate-4000S units can often be kept in production through third-party maintenance providers. Fortinet no longer issues software fixes, support, or hardware replacement for it.