Fortinet FG-400G is the exact ordering identifier covered here, in the FortiGate 400G range. The reviewed specification records firewall throughput: 164 / 163 / 145 Gbps (1518/512/64-byte UDP, up to); threat protection throughput: 13 Gbps (Enterprise Mix; firewall, IPS, application control and malware protection; logging enabled; up to); ipsec vpn throughput: 55 Gbps (512-byte; AES256-SHA256; up to). Use this guide to decide what to include in a configuration request, rather than treating similar model numbers as interchangeable.

Specifications that define this model

The values below retain the source qualifiers. A missing field is not evidence that a capability is included or absent.

Specification Recorded value
Firewall throughput 164 / 163 / 145 Gbps (1518/512/64-byte UDP, up to)
Threat protection throughput 13 Gbps (Enterprise Mix; firewall, IPS, application control and malware protection; logging enabled; up to)
IPsec VPN throughput 55 Gbps (512-byte; AES256-SHA256; up to)
NGFW / app-control throughput 14 Gbps (Enterprise Mix; firewall, IPS and application control; logging enabled; up to)
Concurrent sessions 28 million
Interfaces 4 x 25GE SFP28; 4 x 10GE SFP+; 16 x GE SFP; 8 x 5GE RJ45; 1 x 2.5GE RJ45; 1 x GE RJ45
Form factor 1U rack
Power supplies Dual AC power supplies

How to evaluate this exact configuration

Network interfaces

Network interfaces for FG-400G: 4 x 25GE SFP28; 4 x 10GE SFP+; 16 x GE SFP; 8 x 5GE RJ45; 1 x 2.5GE RJ45; 1 x GE RJ45. Draw the WAN, LAN, management and resilience connections before ordering optics or cables. Check the hardware reference for any shared-port arrangements.

Published inspection rating

Published inspection rating for FG-400G: 13 Gbps (Enterprise Mix; firewall, IPS, application control and malware protection; logging enabled; up to). Keep the traffic mix, packet size, enabled services and software-version qualifiers with the rating. This is a manufacturer figure, not a benchmark performed by technix.guru or a promise for a particular workload.

VPN sizing

VPN sizing for FG-400G: 55 Gbps (512-byte; AES256-SHA256; up to). Size encrypted traffic separately from inspected internet traffic. Tunnel count, users and inspection policy need their own design checks; a throughput number does not establish them.

Installation format

Installation format for FG-400G: 1U rack. Check rack or desk space, power feeds, airflow and the accessories actually supplied. A family photograph does not establish the contents of the exact ordering code.

Compare nearby ordering codes

Model Interfaces NGFW / app-control throughput Threat protection throughput
FG-400G 4 x 25GE SFP28; 4 x 10GE SFP+; 16 x GE SFP; 8 x 5GE RJ45; 1 x 2.5GE RJ45; 1 x GE RJ45 14 Gbps (Enterprise Mix; firewall, IPS and application control; logging enabled; up to) 13 Gbps (Enterprise Mix; firewall, IPS, application control and malware protection; logging enabled; up to)
FG-120G 4 x 10GE SFP+; 18 x GE RJ45; 8 x GE SFP 3.1 Gbps (Enterprise Mix; firewall, IPS and application control; logging enabled; up to) 2.8 Gbps (Enterprise Mix; firewall, IPS, application control and malware protection; logging enabled; up to)
FG-200G 8 x 10GE SFP+; 8 x 5GE RJ45; 10 x GE RJ45; 4 x GE SFP 7 Gbps (Enterprise Mix; firewall, IPS and application control; logging enabled; up to) 6 Gbps (Enterprise Mix; firewall, IPS, application control and malware protection; logging enabled; up to)

These are specification comparisons, not statements that the models are drop-in replacements. Compare the configuration limits before choosing an alternative.

FG-120G manufacturer reference · FG-200G manufacturer reference

Questions before you request a quote

Which product does FG-400G identify?

It identifies Fortinet FortiGate 400G 1U firewall. Keep FG-400G on the requirement and quote; a family name alone does not fix the ordering configuration.

What should I check before ordering FG-400G?

Start with the specification and configuration checks above, then state the quantity, destination and intended connections or platform. Ask for the exact contents of the offered configuration and identify every proposed substitution separately.

Build a clear requirement

Specify FG-400G, quantity and delivery country, then add the configuration information discussed above. Keep accessories and any accepted alternative as separate lines. Request current pricing and availability rather than relying on an article for live commercial information.

View the FG-400G product listing · Browse Fortinet firewalls · Request a quote

For the wider selection process, read the related buying guide.

Sources and scope

Document and identifier checks: 2026-10-17. Prepared from manufacturer documentation and the catalogue's recorded specifications; no hands-on benchmark is claimed. Confirm destination-specific options and configuration eligibility against the source documents. Prices, stock, delivery dates and coverage terms are not established by this guide.