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Your FortiGate licence has expired: what happens now?

Nothing switches off and no alarm sounds. That is exactly what makes it dangerous.

A situation we meet regularly when auditing appliances: the subscription lapsed more than a year ago, the business has no idea, and believes it is protected.

What actually happens

The appliance keeps working. The internet does not go down, VPN stays up, rules continue to apply.

What stops is updating. Antivirus, intrusion prevention and web filtering keep running on the last data set they received. So there is protection, but it is old.

The dashboard still shows antivirus as enabled. Traffic is still scanned — against the threats of the day the subscription ended, not today's.

Why it goes unnoticed

Because there is no symptom.

When a disk fills up you get a warning. When the internet drops the phone rings. When a licence expires, nothing happens at all. Users carry on working and nobody calls.

This makes licence expiry the security gap businesses live with longest without knowing. The average time to discovery is the next audit.

How serious is it?

When a new malware family appears, the vendor publishes signatures within hours. If your subscription has lapsed, that signature never reaches your appliance.

The same applies to web filtering: newly registered malicious sites are not categorised or blocked.

The size of the risk depends on how long it has been expired. One month is not critical; one year is serious.

How to check

The management interface has a licence status page showing the expiry date of each service separately — antivirus, IPS and web filtering can expire on different dates.

The support contract (hardware replacement rights) is a separate thing from the security subscription and expires on its own schedule. Check both.

The appliance can also raise a warning as expiry approaches; in most deployments this arrives switched off. Have it enabled.

When renewing

  • Record the expiry date somewhere other than one person's calendar. If that person leaves, the calendar goes with them.
  • Renew according to the bundle you actually use. If you never enabled web filtering, a narrower bundle may be enough.
  • Match the term to the appliance's remaining life. A five-year subscription on hardware you will replace in three is money left behind.
  • Backdated renewal is possible. Renewing after expiry can incur charges for the gap, which is why delaying costs more.

For clients under our support we track these dates and raise renewal before services stop updating.

Need help with this?

Ask us about fortinet licensing and support, or request a free assessment directly.

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