Chapter 12
| Security Measures
DoS Protection
– 367 –
◆ WinNuke Attack – Attacks in which affected the Microsoft Windows 3.1x/95/
NT operating systems. In this type of attack, the perpetrator sends the string of
OOB out-of-band (OOB) packets contained a TCP URG flag to the target
computer on TCP port 139 (NetBIOS), casing it to lock up and display a “Blue
Screen of Death.” This did not cause any damage to, or change data on, the
computer’s hard disk, but any unsaved data would be lost. Microsoft made
patches to prevent the WinNuke attack, but the OOB packets.
(Default: Disabled)
◆ WinNuke Attack Rate – Maximum allowed rate. (Range: 64-2000 kbits/second;
Default: 1000 kbits/second)
Web Interface
To protect against DoS attacks:
1. Click Security, DoS Protection.
2. Enable protection for specific DoS attacks, and set the maximum allowed rate
as required.
3. Click Apply
Figure 224: Protecting Against DoS Attacks
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