A system for efficiently thwarting syn flood DDoS attacks on a target server including a CPU, the system comprising: network controller hardware having steering capability; and a software application to create and to configure initial steering object/s which define a steering configuration of the network controller and monitor at least one opened connection to the server, including updating the steering configuration responsive to establishment of at least one connection to the server, wherein the network controller hardware's steering capability is used to provide a SYN cookie value used for said thwarting, and to send at least one packet, modified, to the packet's source.

Systems and methods for priority-based processing of messages received from multiple servers. An example method comprises: receiving a plurality of network packets from one or more servers; processing the plurality of network packets to produce a first message associated with a first timestamp and a second message associated with a second timestamp; writing the first message to a first message queue of a plurality of message queues; writing the second message to a second message queue of the plurality of message queues; and retrieving, from the plurality of message queues, the first message and the second message in an order of their respective associated timestamps.

A method for the transmission and adaption of data can include the steps of generating generic requirement documents, identifying a plurality of suitable communication patterns on the basis of the generic requirement documents, determining currently available transport options and their service quality across at least one communication network, and selecting a communication pattern from a plurality of suitable communication patterns based on the network transmission qualities of the at least one communication network. The method can utilize a first functional layer and a second functional layer that are integrated between a software application layer and a network access layer that each receive input documents that are independent of each other. The input documents of the second functional layer can contain transport-related information while the input documents of the first functional layer can contain application-related information. Systems and devices can be configured to facilitate use of embodiments of the method.

A Software Defined Wide Area Network (SD-WAN) edge node is disclosed. The SD-WAN edge node includes edge node SD-WAN ports coupled to untrusted underlay networks. The SD-WAN edge node transmits a first Border Gateway Protocol (BGP) update message advertising WAN (Wide Area Network) properties of the edge node SD-WAN ports to a local controller via an encrypted channel over the untrusted underlay network. The SD-WAN edge node receives a second BGP update message from the local controller, the second BGP update message advertising WAN properties of peer node SD-WAN ports of a peer node. The SD-WAN edge node establishes a security association with the peer node over the untrusted underlay networks based on the WAN properties of the edge node SD-WAN ports and the WAN properties of the peer node SD-WAN ports.

A Software Defined Wide Area Network (SD-WAN) edge node is disclosed. The SD-WAN edge node includes edge node SD-WAN ports coupled to untrusted underlay networks. The SD-WAN edge node transmits a first Border Gateway Protocol (BGP) update message advertising WAN (Wide Area Network) properties of the edge node SD-WAN ports to a local controller via an encrypted channel over the untrusted underlay network. The SD-WAN edge node receives a second BGP update message from the local controller, the second BGP update message advertising WAN properties of peer node SD-WAN ports of a peer node. The SD-WAN edge node establishes a security association with the peer node over the untrusted underlay networks based on the WAN properties of the edge node SD-WAN ports and the WAN properties of the peer node SD-WAN ports.

Systems and methods for reducing bandwidth loss in IPv6 packet switching networks. A network appliance is configured to sample IPv6 packets and mirror sampled packets to a working memory or memory structure, such as a queue. A transport layer payload is extracted from each sampled packet and a transport layer checksum validation operation is performed. Upon detecting an error, the network appliance updates a dropped packet rate or other metric.

Systems and methods for reducing bandwidth loss in IPv6 packet switching networks. A network appliance is configured to sample IPv6 packets and mirror sampled packets to a working memory or memory structure, such as a queue. A transport layer payload is extracted from each sampled packet and a transport layer checksum validation operation is performed. Upon detecting an error, the network appliance updates a dropped packet rate or other metric.

Systems and methods for Transmission Control Protocol (TCP) acknowledgement (ACK) packet suppression are described. In various implementations, these systems and methods may be applicable to low-power communications. For example, a method may include receive a transport packet at a transport layer; de-encapsulating the transport packet using a transport protocol to identify a security packet; communicating the security packet to a security layer by the transport layer; communicating an acknowledgement signal to the transport layer from the security layer in response to receiving the security packet; suppressing an acknowledgement packet at the transport layer in response to receiving the acknowledgement signal; adding an acknowledgment indication to a next data packet to be sent after the suppress action; and sending the next data packet.

Systems and methods for Transmission Control Protocol (TCP) acknowledgement (ACK) packet suppression are described. In various implementations, these systems and methods may be applicable to low-power communications. For example, a method may include receive a transport packet at a transport layer; de-encapsulating the transport packet using a transport protocol to identify a security packet; communicating the security packet to a security layer by the transport layer; communicating an acknowledgement signal to the transport layer from the security layer in response to receiving the security packet; suppressing an acknowledgement packet at the transport layer in response to receiving the acknowledgement signal; adding an acknowledgment indication to a next data packet to be sent after the suppress action; and sending the next data packet.

A method for fetching a content from a web server to a client device is disclosed, using tunnel devices serving as intermediate devices. The tunnel device is selected based on an attribute, such as IP Geolocation. A tunnel bank server stores a list of available tunnels that may be used, associated with values of various attribute types. The tunnel devices initiate communication with the tunnel bank server, and stays connected to it, for allowing a communication session initiated by the tunnel bank server. Upon receiving a request from a client to a content and for specific attribute types and values, a tunnel is selected by the tunnel bank server, and is used as a tunnel for retrieving the required content from the web server, using standard protocol such as SOCKS, WebSocket or HTTP Proxy. The client only communicates with a super proxy server that manages the content fetching scheme.