What Are Fortinet LENC Devices? (2026 Guide)

If you've been shopping for a FortiGate firewall and noticed some models with "LENC" in the name, you're probably wondering what it means and whether it matters for your organisation. This guide breaks down exactly what Fortinet LENC devices are, who needs them, how they differ from standard FortiGate models, and what to do if you're unsure which version to buy.

What Does LENC Mean on a FortiGate?

LENC stands for Low Encryption. It refers to a specific licence type applied to certain FortiGate, FortiMail, and FortiCache devices that restricts the device to lower-strength encryption protocols.

A FortiGate LENC model uses 56-bit DES encryption rather than the high-strength AES and 3DES encryption found in standard FortiGate units. You'll recognise LENC models by the suffix on the model name, for example:

• FG-100F-LENC
• FG-400F-LENC
• FG-600F-LENC

The LF prefix on the serial number is another identifier. Where a standard unit reads FG310BXXXXXXXX, an LENC device reads LF310BXXXXXXXX.

You can also confirm the licence status directly on the device via CLI:

# get system status | grep "License Status"

License Status: Low-Encryption(LENC)

What Can't a Fortinet LENC Device Do?

Understanding the limitations is critical before purchasing. LENC devices cannot:

• Use or inspect high encryption protocols such as AES or 3DES
• Perform SSL/TLS inspection (deep packet inspection of encrypted traffic)
• Enforce security profiles on encrypted traffic. Profiles exist, but the device cannot assess or act on the content within encrypted sessions

LENC devices can still:

• Operate SSL VPN and IPsec VPN using 56-bit DES encryption
• Run security profiles against unencrypted traffic
• Function as a network firewall for perimeter and segmentation use cases

For many network environments, particularly those where encrypted traffic inspection isn't a regulatory requirement, these limitations may be acceptable. But for organisations that rely on SSL inspection as part of their threat detection strategy, a standard high-encryption FortiGate is the right choice.

Why Do LENC Devices Exist? The Export Control Reason

This is the part most buyers don't realise until they're mid-procurement.

LENC devices exist primarily because of US export control regulations around strong cryptographic products. Under these rules, selling a standard (high encryption) FortiGate to a government end-user in certain countries requires an export licence from the US government. a Process that adds time, cost, and compliance complexity to the purchase.

LENC devices fall under a licence exemption, which makes them easier to sell to government buyers in those regions.

Countries Where Government Buyers Typically Do NOT Need LENC

Standard FortiGate units can generally be sold to government end-users in:

Australia, Austria, Belgium, Canada, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Japan, Latvia, Lithuania, Luxembourg, Malta, Netherlands, New Zealand, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland, the United Kingdom, and the United States.

Where LENC Is Most Commonly Required

Government end-users in the following regions often require LENC variants (or a US export licence for the standard version):

• Latin America (including Mexico)
• Middle East
• Africa
• Eastern Europe (outside the EU)
• Asia Pacific (excluding Japan)

If your organisation is a commercial (non-government) entity in any country, export licence requirements typically don't apply and you can purchase standard FortiGate hardware directly.

Can You Upgrade a LENC Device to Full Encryption?

Yes. All Fortinet LENC devices can be upgraded to full high-encryption operation by purchasing a strong encryption upgrade licence key from Fortinet. Once applied, the device reboots with BIOS security level 2 (compared to level 0 on an unlicensed LENC unit) and gains full AES/3DES capability, including SSL inspection.

Important: If the end-user is a government entity in a country outside the approved list above, the upgrade licence itself still requires US government approval. For commercial buyers, the upgrade is straightforward. Contact your Fortinet partner (that's us).

Which FortiGate Models Are Available in LENC?

Not every FortiGate model has an LENC variant. LENC versions are also sometimes released later than the equivalent standard model. The full current list includes models across the SMB, mid-range, and enterprise tiers:

SMB / Branch: FG-60F-LENC, FG-Rugged-60F-LENC, FG-61F-LENC, FG-80F-LENC

Mid-Range: FG-100F-LENC, FG-101F-LENC, FG-200E-LENC, FG-201E-LENC, FG-201F-LENC, FG-400E-BYPASS-LENC, FG-400F-LENC, FG-401E-LENC

Enterprise / Data Centre: FG-600E-LENC, FG-600F-LENC, FG-601E-LENC, FG-800D-LENC, FG-900D-LENC, FG-1000D-LENC, FG-1100E-LENC, FG-1101E-LENC, FG-1800F-LENC, FG-1801F-LENC, FG-2000E-LENC, FG-2201E-LENC, FG-2500E-LENC, FG-2601F-LENC

High-End: FG-3301E-LENC, FG-3400E-LENC, FG-3401E-LENC, FG-3500F-LENC, FG-3960E-LENC, FG-4201F-LENC, FG-4400F-LENC, FG-4401F-LENC, FG-6301F-LENC, FG-6501F-LENC

LENC vs Standard FortiGate: Quick Comparison

Need Help Sourcing Fortinet LENC Hardware?

IP Trading is an authorised Fortinet partner with over two decades of experience supplying enterprise networking hardware to Australian businesses, government agencies, and state and federal procurement frameworks.

We stock Fortinet hardware across the full product range, offer project and volume pricing, Net 30 accounts for qualified buyers, and pre-shipment configuration if you need devices shipped ready to deploy.

Browse our Fortinet range or get in touch with our team for a quote on specific LENC models.

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