Abstract: Disclosed is a method for defending against a malicious data traffic, the method includes: monitoring, by a defender device, data traffic flowing through a network device; generating a first control signal, by the defender device, in response to a detection that the data traffic includes a predefined amount of malicious data traffic, to cause a delivery of the data traffic to the defender device; terminating the malicious data traffic in the defender device. Also disclosed is an apparatus implementing the method, a computer program product and a system.

Abstract: The present invention relates to a method for controlling a communication of a first communicating device to a second communicating device over a communication network, the method comprises: monitoring data traffic to the communication network from the first communication device, in response to detection of at least one predetermined piece of information generating an acknowledgment complying a communication protocol used for the communication, and transmitting the generated acknowledgement to the first communication device for indicating a delivery of the data traffic to the second communicating device. The invention also relates to a network device and a computer program product.

Abstract: The invention relates to a method for defending against a Denial of Service attack, the method comprises: monitoring data traffic; detecting that at least one source computer is involved in a Denial of Service attack; in response to the detection generating at least one data frame by modifying at least one data frame obtained from the data traffic transmitted from the at least one source computer so that a plurality of data fields representing address information of the host server as a source of the at least one generated data frame are set to correspond to address information of the at least one source computer; transmitting the generated data frame to the source computer. The invention relates also to a network device and a computer program product.

Abstract: The invention relates to a method for defending against a Denial of Service attack, the method comprises: data traffic; detecting that at least one source computer is involved in a Denial of Service attack; in response to the detection generating at least one data frame by modifying at least one data frame obtained from the data traffic transmitted from the at least one source computer so that a plurality of data fields representing address information of the host server as a source of the at least one generated data frame are set to correspond to address information of the at least one source computer; transmitting the generated data frame to the source computer. The invention relates also to a network device and a computer program product.

Abstract: The present invention relates to a method for controlling a communication of a first communicating device to a second communicating device over a communication network, the method comprises: monitoring data traffic to the communication network from the first communication device, in response to detection of at least one predetermined piece of information generating an acknowledgment complying a communication protocol used for the communication, and transmitting the generated acknowledgement to the first communication device for indicating a delivery of the data traffic to the second communicating device. The invention also relates to a network device and a computer program product.

Abstract: Disclosed is a method for detecting a threat against a host computer coupled to the front-end computer. A communication connection is established between the host computer and a source computer with a handshake procedure through a front-end computer. Application data is received in the front-end computer from the source computer. The received application data is returned from the front-end computer to the source computer. It is monitored in the front-end computer if a predetermined message is received from the source computer in response to the return of the application data. If the predetermined message is received in the front-end computer, it is determined that the source computer is a trusted communication party, But if the predetermined message is not received, the source computer is determined as a threat. The invention relates also to computing device implementing the method and a computer program product.

Abstract: Disclosed is a method for detecting a threat against a host computer coupled to the front-end computer. A communication connection is established between the host computer and a source computer with a handshake procedure through a front-end computer. Application data is received in the front-end computer from the source computer. The received application data is returned from the front-end computer to the source computer. It is monitored in the front-end computer if a predetermined message is received from the source computer in response to the return of the application data. If the predetermined message is received in the front-end computer, it is determined that the source computer is a trusted communication party, But if the predetermined message is not received, the source computer is determined as a threat. The invention relates also to computing device implementing the method and a computer program product.