An application processor sends a TCP packet to the modem, where the TCP packet is used by the modem to generate a wireless protocol data packet corresponding to the TCP packet, so that the modem sends the wireless protocol data packet to a base station. The application processor receives first status information from the modem, where the first status information is status information of the wireless protocol data packet or status information of the TCP packet. The application processor determines, based on the first status information, whether the TCP packet is successfully sent to the base station. If the TCP packet is successfully sent to the base station, the application processor starts a retransmission timer corresponding to the TCP packet. If the TCP packet is not successfully sent to the base station, the application processor sends the TCP packet to the modem again.

This application provides a sequence number synchronization method. The specific method includes: A first network device sends a data packet including a first synchronization indication to a second network device, where the first synchronization indication is used to indicate the second network device and the first network device to perform a sequence number synchronization operation. The first network device receives a response packet sent by the second network device, where the response packet includes a second synchronization indication, and the second synchronization indication is used to indicate that the second network device has received the packet including the first synchronization indication.

Example implementations relate to hard zoning capabilities for devices using Internet small computer system interface (iSCSI) protocol. For example, a method includes creating a virtual local area network (VLAN) at an Ethernet switch between an initiator and target adapter. The method includes assigning an access control list (ACL) to the VLAN, The method includes segregating a device of a plurality of devices connected to the SAN into a zone group. The method also includes controlling access of a zone group based on the ACL and frame filtering.

The present disclosure relates generally to communication with payment terminals via TCP/IP protocol. Using network technology and novel processes, in particular embodiments, the present systems and methods facilitate local network discovery and communication between a payment terminal and an electronic cash register (“ECR”) via a browser. For example, in certain embodiments, the present systems and methods leverage TCP/IP network technology to securely facilitate communications between SaaS ECR software running in a browser environment and one or more payment terminals.

Hierarchical scanning begins with communicating probes over the Internet to ports and networks addresses to determine publicly accessible devices. Based on responses to those probes, follow-up probes are determined to obtain additional information about the publicly accessible devices. The probes are transmitted from a system that is external to the networks corresponding to the network addresses. This provides an external view of the scanned networks and facilitates a probing paradigm that scales beyond a few networks.

A broadcast signal transmission method comprises outputting an RoHC channel that includes one or more RoHC streams and a signaling table that includes information related to header compression by performing header compression for Internet Protocol (IP) packets, which include broadcast data, in accordance with an adaptation mode, a header of each IP packet including an IP header and a User Datagram Protocol (UDP) header, generating at least one first link layer packet that includes the RoHC channel and generating at least one second link layer packet that includes the signaling table, and physical layer processing the at least one first link layer packet and the at least one second link layer packet and transmitting through one or more Physical Layer Pipes (PLPs), wherein the signaling table includes adaptation mode information indicating the adaptation mode, and each RoHC stream in the RoHC channel includes RoHC packets.

The present disclosure relates generally to communication with payment terminals via TCP/IP protocol. Using network technology and novel processes, in particular embodiments, the present systems and methods facilitate local network discovery and communication between a payment terminal and an electronic cash register (“ECR”) via a browser. For example, in certain embodiments, the present systems and methods leverage TCP/IP network technology to securely facilitate communications between SaaS ECR software running in a browser environment and one or more payment terminals.

A source proxy for transmitting one or more TCP packets sent from a source device to a destination device over a wireless link is provided. Each TCP packet comprises a TCP data section and a TCP packet header. The source proxy is located on the wireless link and is configured to: receive the one or more TCP packets; determine a simple compression mode packet from the one or more TCP packets by removing the TCP packet header comprised in each TCP packet, the simple compression mode packet comprising the TCP data sections comprised in the one or more TCP packets and a header that comprises a connection identifier, and send the simple compression mode packet to a destination proxy located on the wireless link, the destination proxy being configured to: receive the simple compression mode packet and acknowledge reception to the source proxy; determine one or more reconstructed TCP packets by extracting the data sections of each TCP packet from the simple compression mode packet, and send the one or more reconstructed TCP packets to the destination device.

Systems, methods and uses for the automation of the deployment and management of autonomous information networks on existing physical communication networks and the transportation of data packets, pertaining to one or more computer applications, among devices attached to each such autonomous network, with enhanced performance, reliability, security, and other data transport quality measures, using one or more dynamic logical tunnels configured and managed by the present systems and methods.

A network information transmission system. The network information transmission system includes a packet handling device including a control plane configured to open a remote direct memory access (RDMA) connection with a destination external to the network information transmission system, an encapsulator configured to encapsulate one or more packets traversing the packet handling device, producing one or more encapsulated packets, and a transmitter configured to transmit the one or more encapsulated packets, via the RDMA connection, to the destination external to the network information transmission system. Related apparatus and methods are also described.