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SYN flood attack |
Also found in: Wikipedia | 0.01 sec. |
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SYN flood attack An assault on a network that prevents a TCP/IP server from servicing other users. It is accomplished by not sending the final acknowledgment to the server's SYN-ACK response (SYNchronize-ACKnowledge) in the handshaking sequence, which causes the server to keep signaling until it eventually times out. The source address from the client is, of course, counterfeit. SYN flood attacks can either overload the server or cause it to crash. See denial of service attack.Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | For example, in a SYN flood attack, packets are sent to a target using spoofed (fake) IP source addresses. A TCP SYN flood attack sends many TCP connection requests to the victim server, causing it to allocate resources for each requested connection while it awaits a final connection acknowledgement, which never comes. If not stopped quickly, the SYN flood attack will consume system resources until the target system becomes unstable or crashes. |
SYN flood attack |
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