Fortinet FortiGate 121G

Fortinet FortiGate 120G Series — Product Description (FG-120G / FG-121G)

Rackmount NGFW + Secure SD-WAN for mid-size enterprise & high-demand branches — with dense ports, 10GE uplinks, and redundant power

The FortiGate 120G Series is a 1RU next-generation firewall built for organisations that need higher throughput, more interfaces, and stronger scalability than desktop branch models. It combines AI/ML-powered security, Secure SD-WAN, and Universal ZTNA on FortiOS, giving you deep visibility into users, devices, and applications—plus consistent policy enforcement across hybrid environments (including Hybrid Mesh Firewall architectures).

Powered by Fortinet’s SP5 security processing, the 120G series is designed to deliver high-performance threat protection and SSL inspection without becoming a bottleneck—ideal for WAN edge, segmentation-heavy networks, and consolidated security at scale.

Why FortiGate 120G Series

• Enterprise inspection performance for IPS / NGFW / threat protection workloads

• Dense port layout: GE copper + GE SFP + 10GE SFP+ for uplinks/FortiLink

• Universal ZTNA for consistent access control (agent-based with FortiClient or agentless via proxy portal)

• Rack-ready reliability with dual built-in AC power supplies (1+1 redundancy, non-hot-swappable)

• Security Fabric + FortiOS for unified management, automation, analytics, and integrated security services

• Optional onboard storage (FG-121G includes 480GB SSD) for local logging/storage use cases

Typical Use Cases

• NGFW at the edge: protect against ransomware, malware, zero-days, and AI-powered threats using FortiGuard services

• Secure SD-WAN: app-aware steering + unified security for hybrid work, SD-Branch, and cloud-first WAN designs

• Universal ZTNA: enforce least-privilege access to apps across on-prem and cloud

Quick Performance Snapshot (Enterprise Mix)

• IPS: up to 5.3 Gbps

• NGFW: up to 3.1 Gbps

• Threat Protection: up to 2.8 Gbps

• IPsec VPN: up to 35 Gbps

• SSL inspection: up to 3.0 Gbps

• Scale: up to 3M concurrent sessions, 140k new sessions/sec, 10,000 policies

• Remote access: SSL-VPN throughput 1.5 Gbps, recommended 500 concurrent users

Interfaces & Hardware (what customers care about)

• 16× GE RJ45 switch ports

• 8× GE SFP slots

• 4× 10GE SFP+ FortiLink slots (default)

• 1× RJ45 console, 1× USB, plus dedicated MGMT and HA ports

• 1RU rackmount, front-to-back airflow, TPM + BLE

Models (what’s the difference?)

• FG-120G: SP5 accelerated, dual AC PSU, no onboard SSD

• FG-121G: same platform + 480GB onboard SSD (best if you want local log retention / storage)

View data sheet: FortiGate 120G Series Data Sheet