FortiGate-3951B
Fortinet FortiGate 3951B — Fortinet FortiGate-3951B 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 3951B
FortiGate-3951B — questions
Is the Fortinet FortiGate-3951B still supported?
No. Fortinet's last date of support for FortiGate-3951B was Feb 2017 (per the Fortinet end-of-sale bulletin) — it is past end of service life.
When did the FortiGate-3951B reach end of sale?
FortiGate-3951B reached end of sale Feb 2012, per the Fortinet end-of-sale bulletin.
What is the last date of support (EOSL) for the FortiGate-3951B?
Feb 2017 — per the Fortinet end-of-sale bulletin.
Can the FortiGate-3951B be maintained after Fortinet support ends?
After the last date of support, FortiGate-3951B units can often be kept in production through third-party maintenance providers. Fortinet no longer issues software fixes, support, or hardware replacement for it.