SYN Flood
SYN Flood
A type of denial-of-service attack. During the establishment of a TCP session, a 3-way handshake takes place, commencing with a SYN packet sent to the server that requests the connection. This should be followed with a SYN-ACK packet returned from the server and finally an ACK packet from the client. If the client fails to respond with the final ACK, a half-open connection results. These half-open connections consume resources on the server without the corresponding ACK, an attacker can effectively prevent any further connections resulting in the denial of service
Bookmark this glossary item
Share this item using the following sites:
