4071 results about "Protocol stack" patented technology

Methods, systems and computer program products provide communications with a plurality of application instances using a plurality of communication protocol stacks and a single Internet Protocol (IP) address. A stack is established as a routing stack associated with the single IP address. Other stacks which are associated with the single IP address are defined as candidate target stacks and an identification of candidate target stacks and the routing stack is distributed to the stacks. The routing stack is notified when an application associated with a candidate target stack listens to a port of the IP address to establish a current actual target stack. A request to establish a connection to the IP address and the port of the IP address is received and a routing table entry corresponding to the current actual target stack is created to provide a routing path from the routing stack to the current actual target stack. Communications to the port of the IP address received by the routing stack are routed based on the routing table.

Improvements in intrusion detection are disclosed by providing integrated intrusion detection services. Preferably, these services are integrated into a system or server that is the potential target of attack. Stack-based security processing is leveraged for access to cleartext data within the layers of the protocol stack. Layer-specific attacks may therefore be processed efficiently. Evaluation of incoming traffic for an intrusion is preferably performed only after an error condition of some type has been detected. This approach reduces the overhead of intrusion detection by reducing the number of packets to be inspected, and at the same time allows more efficient packet inspection through use of context-specific information that may be used to direct the inspection to particular candidate attacks. Generic attack class capability is also disclosed. Intrusion detection policy information may be used to direct the actions to be taken upon detecting an attack.

A computer system aggregates a plurality of network resources of a computer system. The computer system has a plurality of processing nodes. Each of the processing nodes includes one or more of the plurality of network resources. The one or more resources of each processing node makes up a bypass protocol stack operable to provide offloaded connections over a network to instances of one or more applications running on the system. Each of the applications is uniquely associated with a first port number. The system is identified on the network by a global IP address and each of the plurality of nodes is identified by a unique local IP address. Each of the plurality of resources is uniquely identified by an assigned private IP address. At each of the processing nodes, a listening socket is created for each instance of the plurality of applications running on the node. The listening socket is created by associating it with a first endpoint tuple that includes the public IP address uniquely identifying the node and the first port number associated with the application for which the listening socket is created. The first endpoint tuple associated with each listening socket created is translated to a set of bypass endpoint tuples, each of the set of bypass tuples including a different one of the assigned private IP addresses identifying the one or more network resources of the node. Each listening socket is associated with the set of bypass tuples. A global address translation map is maintained for each set of bypass tuples associated with each of the listening sockets created for an instance of each of the applications running on the plurality of processing nodes.

A transmit-only Bluetooth-compatible apparatus is described comprising: a protocol stack compatible with the Bluetooth protocol standard, the protocol stack including selected portions of the Bluetooth protocol used only for transmitting data; and a transceiver communicatively coupled to the protocol stack and configured to physically transmit the data.Also described is a receive-only Bluetooth-compatible apparatus comprising: a protocol stack compatible with the Bluetooth protocol standard, the protocol stack including selected portions of the Bluetooth protocol used only for receiving data; and a transceiver communicatively coupled to the protocol stack and configured to physically receive the data.Also described is a method comprising: generating a transmit-only Bluetooth protocol stack by removing elements of a standard Bluetooth protocol stack related to receiving data; and configuring the transmit-only Bluetooth protocol stack in a transmit-only wireless device for transmitting data.

A gateway is provided for interfacing packet-based phone services with controllers of emergency call centers. For each type of electronic medium to be interfaced, the gateway comprises a specific I / O interface and a specific module such as a protocol stack. The gateway also comprises an auxiliary information gateway application that integrates the I / O interfaces and modules into a logical framework that enables inter-working therebetween. A controller that includes the functionality of the gateway device is also provided. Methods for enabling emergency calls, and more generally for enabling a multi-media session, are also provided.

A system for reducing the cost of network managment by using a proxy agent and subchannel communications so fewer SNMP licenses and fewer protocol stacks are needed. Subchannel communication is achieved in a plurality of different embodiments. Embodiments having single subchannel transceivers, multiple transceivers, single multiplexer and multiple multiplexers are disclosed. An NMS process using routing table CRC to automatically detect when the NMS topology information is incorrect and automated topology discovery is disclosed. A process for automated discovery of redundant cables during automated topology discovery is disclosed.