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A LAND (Local Area Network Denial) attack is a DoS (Denial of Service) attack that consists of sending a special poison spoofed packet to a computer, causing it to lock up. The security flaw was actually first discovered in 1997 by someone using the alias "m3lt", and has resurfaced many years later in operating systems such as Windows Server 2003 and Windows XP SP2.

Source: http://en.wikipedia.org/wiki/LAND

By using the tool hping3 by Hping, this packet can be crafted!  Although most firewalls are already there to stop this, this concept is nonetheless creative.  A similar command from hping3 would include:

[code]
hping3 --baseport 80 --destport 80 --syn --spoof TARGET_IP TARGET_IP
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