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FortiGate DoS Protection - Block Malicious Traffic Before It Affects Critical Applications and Systems

Denial of Service (DoS) attacks have been a part of the internet landscape for years. There have been some high profile DoS attacks recently, but attackers today are deploying fundamentally the same techniques as those employed over a decade ago. With the ascendance of Botnets and Crimeware-as-a-Service in the threat landscape, the ability to employ a botnet to launch a DoS attack is relatively simple.This white paper describes common DoS techniques, such as TCP SYN, UDP, and ICMP floods. It also explains the technology integrated into every FortiGate consolidated security platform that helps in blocking these common DoS attacks, the DoS Sensor. This feature, included in the FortiOS operating system, uses network traffic anomaly detection to identify a DoS attack. It can detect 12 types of network anomalies: TCP SYN floods, UDP and ICMP floods, UDP scans, TCP port scans, TCP, UDP, and ICMP source and destination session attacks, and ICMP sweep attacks. The paper also offers suggestions on how to prevent an organization's network from being used to attack another organization.

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FortiGate DoS Protection - Block Malicious Traffic Before It Affects Critical Applications and Systems

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Fortinet has allowed us to bring our network security services in-house rather than spending money for an outsourced vendor to manage the network. A unified security solution works best for us, as we have a relatively small technical team. The FortiGate solution helps us to manage our time, skills and on-going costs more effectively. Because of our Fortinet deployment, we are expecting to save $1.5 million in network security costs over the next three years.

Rosemary Burns
Technical Services Division Manager
Holmesglen Institute