In the IPVS version 0.9.10 or later, an entry is created for each new connection in order to keep its state (such as the server that new connection is redirected to), and the size of each entry is 124 bytes thus 128 bytes effective memory is needed for each entry. The Denial-of-Service attck to the LVS host is to aggressively increase the number of entries until the host run out of memory. Three d