CHAPTER 8 Firewall Configuration
DoS
DOS
Denial of Service (DoS) is an attempt by a hacker to flood an IP address, domain, or server with repeated external communincation requests, effectively saturating the system with an information flood that renders it slow or effectively inoperable for genuine users to access it. DoS attacks are also referred to as
The DoS Settings on the ADSL Router enable the user to block many of the common DoS attacks a network might suffer.
Figure 55: DoS Settings
The following items are displayed on this page:
◆Enable DoS Blocking — Activates the DoS check boxes and configurable parameters associated with them. (Default: Disabled)
■Whole System Flood: SYN: Prevents a SYN (synchronise) attack in which the process of the common three way TCP handshake is interupted and the acknowledge response gets sent to a maicious IP address, or the system is flooded with false SYN requests.
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