ZyXEL Communications ZyXEL ZyWALL IDP 10 - Manual (Page 50)

ZyWALL IDP 10 User’s Guide
6-4 IDP Policies
Figure 6-3 Spam Signatures
6.3.4 DoS/DDoS
The goal of Denial of Service (DoS) attacks is not to steal information, but to disable a device or
network on the Internet. A distributed denial-of-service (DDoS) attack is one in which multiple
compromised systems attack a single target, thereby causing denial of service for users of the targeted
system. To find a list of all Denial of Service or Distributed Denial of Service signatures supported by
the ZyWALL, do a policy search by name (DoS) or policy query by type (DoS/DDoS). The following
screen shows some of the DoS/DDoS signatures supported by the ZyWALL at the time of writing.
Figure 6-4 DoS/DDoS Signatures