FortiOS 5.4 Online Help Link FortiOS 5.2 Online Help Link FortiOS 5.0 Online Help Link FortiOS 4.3 Online Help Link

Home > Online Help

> Chapter 21 - Parallel Path Processing - Life of a Packet > Introduction

Introduction

This FortiOS Handbook chapter contains the following sections:

Parallel Path Processing introduces the concept of Parallel Path Processing.

Packet flow ingress and egress: FortiGates without network processor offloading describes the overall packet flow through a FortiGate with no network offloading (NP) hardware.

Packet flow: FortiGates with NP6 processors first packet of a new session similar to the previous section, the first packet in a new session that can be offloaded is processed in much the same way as on a FortiGate with no network processors.

Packet flow: FortiGates with NP6 processors - packets in an offloaded session describes the much simpler packet flow for a packet from an offloaded session.

UTM/NGFW packet flow: flow-based inspection describes how single pass UTM/NGFW processing occurs in a flow-based FortiGate or VDOM.

UTM/NGFW packet flow: proxy-based inspection describes how UTM/NGFW processing occurs in a proxy-based FortiGate or VDOM.

Comparison of inspection types shows how different security functions map to different inspection types.