A UDP Flood Attack involves the sending of highly-spoofed UDP packets at an extremely high packet rate using a wide source IP range. The unexpectedly high volume of incoming UDP packets overwhelms the victim’s network, exhausting its resources and … [Read more...] about What is a UDP Flood?
TCP three-way handshake
What is a SYN-ACK Flood?
SYN floods can take various forms, most of which do not seriously affect the attacked system. However, one of the most potentially damaging types of SYN floods is the SYN-ACK flood, in which the client address refers to a system that does not … [Read more...] about What is a SYN-ACK Flood?
What Are SYN Cookies?
When cryptologists Daniel J. Bernstein and Jeff Weisberg made SYN cookies mainstream as a way of mitigating SYN floods, the problem was considered insoluble. It was September 1996, following the SYN flood, which had shut down the mail service for … [Read more...] about What Are SYN Cookies?
What is a SYN Flood?
A SYN flood, aka TCP-SYN flood, is one of the oldest forms of DDoS attacks, whose goal is to make a server unavailable to legitimate traffic by consuming all the server’s available resources. The attacker repeatedly sends initial connection request … [Read more...] about What is a SYN Flood?