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Introduction The FortiGate IPS

FortiGate IPS User Guide Version 3.0 MR7

01-30007-0080-20080916 5

Introduction

This section introduces you to the FortiGate Intrusion Prevention System (IPS)

and the following topics:

• The FortiGate IPS

• About this document

• Fortinet documentation

• Customer service and technical support

The FortiGate IPS

Spam and viruses are not the only threats facing enterprises and small

businesses. Sophisticated, automated attack tools are prevalent on the Internet

today, making intrusion detection and prevention vital to securing corporate

networks. An attack or intrusion can be launched to steal confidential information,

force a costly web site crash, or use network resources to launch other attacks.

The FortiGate IPS detects intrusions by using attack signatures for known

intrusion methods, and detects anomalies in network traffic to identify new or

unknown intrusions. Not only can the IPS detect and log attacks, but users can

choose actions to take on the session when an attack is detected. This guide

describes how to configure and use the IPS and the IPS response to some

common attacks.

This guide describes:

• IPS overview and general configuration

• Predefined signatures

• Custom signatures

• Protocol decoders

• IPS sensors

• DoS sensors

• SYN flood attacks

• ICMP sweep attacks

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Fortinet Network Device IPS Manual do Utilizador Página 5