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公开(公告)号：JP2001273209A
公开(公告)日：2001-10-05
申请号：JP2001026784
申请日：2001-02-02
Applicant: IBM
Inventor： ATTWOOD KIRA STERLING , OVERBY JR LINWOOD HUGH , SUN CHIEN EN
Abstract: PROBLEM TO BE SOLVED: To provide a method for preventing the overload of a server and the predictive function stop of the server caused by the flood of a connection request generated by an intended attack or the like. SOLUTION: In response to the request of a connection with a designated port from a host, the number of connections with ports assigned to the host is confirmed. When this number exceeds a first threshold, the request is refused. When invalidation is allowed by a service quality parameter related to the host, this refusal can be invalidated. When the number of connections usable for the ports is less than a second threshold, the connection request is refused on any conditions.
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公开(公告)号：JP2001265678A
公开(公告)日：2001-09-28
申请号：JP2001026567
申请日：2001-02-02
Applicant: IBM
Inventor： ATTWOOD KIRA STERLING , OVERBY JR LINWOOD HUGH , SUN CHIEN EN
Abstract: PROBLEM TO BE SOLVED: To provide a method for preventing the overload of a server and the projected function stoppage of the server due to the flood of connectionless datagrams caused by an intentional attack or the like. SOLUTION: The number of the datagrams from a host already standing by in the queue of a port is obtained in response to the datagram from the host to a specified port. In the case that the number exceeds a first threshold, the datagram is abandoned. In a suitable execution example, the threshold is obtained by multiplying the number of usable queue slots remaining in the port with a ratio P.
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公开(公告)号：DE10101616A1
公开(公告)日：2001-08-30
申请号：DE10101616
申请日：2001-01-16
Applicant: IBM
Inventor： ATTWOOD KIRA STERLING , OVERBY JUN LINWOOD HUGH , SUN CHIEN EN
IPC: G06F13/00 , G06F15/00 , H04L12/56 , H04L29/06 , G06F15/173
Abstract: A server is prevented from being overloaded and possibly brought down by flooding with connectionless datagrams caused by an intentional attack. In response to a datagram from a host for a specific connection, the number of datagrams is detected, which have already been put by the host in a queue for the connection. If this number goes over an initial threshold value, the datagram is rejected.
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公开(公告)号：DE10101616C2
公开(公告)日：2003-07-31
申请号：DE10101616
申请日：2001-01-16
Applicant: IBM
Inventor： ATTWOOD KIRA STERLING , OVERBY JUN LINWOOD HUGH , SUN CHIEN EN
IPC: G06F13/00 , G06F15/00 , H04L12/56 , H04L29/06 , G06F15/173
Abstract: A server is prevented from being overloaded and possibly brought down by flooding with connectionless datagrams caused by an intentional attack. In response to a datagram from a host for a specific connection, the number of datagrams is detected, which have already been put by the host in a queue for the connection. If this number goes over an initial threshold value, the datagram is rejected.
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