203 results about "Intrusion prevention system" patented technology

Detecting and mitigating threats to a computer network is important to the health of the network. Currently firewalls, intrusion detection systems, and intrusion prevention systems are used to detect and mitigate attacks. As the attackers get smarter and attack sophistication increases, it becomes difficult to detect attacks in real-time at the perimeter. Failure of perimeter defenses leaves networks with infected hosts. At least two of symptoms, roles, and reputations of hosts in (and even outside) a network are used to identify infected hosts. Virus or malware signatures are not required.

In embodiments of the present invention improved capabilities are described for threat detection using a behavioral-based host-intrusion prevention method and system for monitoring a user interaction with a computer, software application, operating system, graphic user interface, or some other component or client of a computer network, and performing an action to protect the computer network based at least in part on the user interaction and a computer code process executing during or in association with a computer usage session.

In embodiments of the present invention improved capabilities are described for behavioral-based threat detection. An executing computer process is monitored for an indication of malicious behavior, wherein the indication of the malicious behavior is a result of comparing an operation with a predetermined behavior, referred to as a gene. A plurality of malicious behavior indications observed for the executing process are compared to a predetermined collection of malicious behaviors, referred to as a phenotype, which comprises a grouping of specific genes that are typically present in a type of malicious code. Upon matching the malicious behavior indications with a phenotype, an action may be caused, where the action is based on a prediction that the executing computer process is the type of malicious code as indicated by the phenotype. Related user interfaces, applications, and computer program products are disclosed.

Hypervisor-based intrusion prevention platform is provided. The hypervisor-based intrusion prevention platform comprises a virtual network intrusion prevention system (vIPS) framework which obtains internal information of a virtualization system from a hypervisor and performs security control on the hypervisor in response to the result of intrusion detection carried out by using the internal information of the virtualization system, a hypervisor security application programming interface (API) module which provides an API used by the vIPS framework to access the hypervisor, an administrator account management and authentication module which manages an administrator account of a vIPS and authenticates the administrator account, an environment setting management module which manages environment setting values of modules within the vIPS, and an external interface module which provides an interface for system control and security control.

The present invention provides a method and apparatus for searching multiple strings within a packet data using deterministic finite automata. The apparatus includes means for updating memory tables stored in a layered memory architecture comprising a BRAM, an SRAM and a DRAM; a mechanism to strategically store the relevant data structure in the three memories based on the characteristics of data, size/capacity of the data structure, and frequency of access. The apparatus intelligently and efficiently places the associated data in different memories based on the observed fact that density of most rule-sets is around 10% for common data in typical network intrusion prevention systems. The methodology and layered memory architecture enable the apparatus implementing the present invention to achieve data processing line rates over 2 Gbps.

Improved techniques are disclosed for use in an intrusion prevention system or the like. For example, a method comprises the following steps performed by a computing element of a network. A packet of a flow is received, the flow comprising a plurality of packets, wherein the plurality of packets represents data in the network. A network intrusion analysis cost-benefit value is determined representing a benefit for analyzing the received packet for intrusions in relation to a cost for analyzing the received packet for intrusions. The method compares the network intrusion analysis cost-benefit value to a network intrusion analysis cost-benefit threshold to determine whether analyzing the received packet for intrusions before forwarding the received packet is warranted. Responsive to a determination that analyzing the received packet for intrusions before forwarding the received packet is not warranted, the received packet is forwarded, an indication is made that subsequent packets of the flow should be forwarded, and a determination is made whether the received packet indicates an intrusion after forwarding the received packet.

The present invention relates to a Session Initiation Protocol (SIP) intrusion detection and response architecture for protecting SIP-based services, and more specifically, to an SIP intrusion detection and response architecture for protecting SIP-based services, in which SIP-based attacks of a new type can be coped with by detecting the SIP-based attacks and SIP traffic anomalies and managing an SIP-aware security device without degrading quality of multimedia, and signal and media channels can be examined through an SIP-aware intrusion prevention system (IPS) for the purpose of preventing an attacker from hindering a call through manipulation of an SIP message and session-hijacking among legitimate users and attempting a toll fraud by detouring authentication.

A method for dynamically decoding protocol data on a computer system is provided using a protocol decoder, which inspects and analyzes protocol data received by the computer system. A protocol decoding program controls the decoding and analysis process. The method may be used by an intrusion prevention system to identify anomalous protocol data that may cause harm to applications receiving the data.

A method for managing network traffic at a portable electronic device connected to a network that includes establishing a virtual network interface to queue network traffic originated by applications running on the device, monitoring the virtual network interface for queued data, assembling a data packet from the queued data, wherein at least some data in the data packet is intended for a node of the network, applying a first set of rules to the data packet, in accordance with a determination that application of the first set of rules triggers a predetermined response associated with the first set of rules, processing the data packet according to the predetermined response, and in accordance with a determination that application of the first set of rules does not trigger the predetermined response, forwarding at least a portion of the data packet to a connection with the node for transmission to the node.

A regular expression pattern matching circuit based on a pipeline architecture is proposed, which is designed for integration to a data processing system, such as a computer platform, a firewall, or a network intrusion detention system (NIDS), for checking whether an input code sequence (such as a network data packet) is matched to specific patterns predefined by regular expressions. The proposed circuit architecture includes an incremental improvement on an old combination of a comparator circuit module and an NDFA (non-deterministic finite-state automata) circuit module, where the incremental improvement comprises a data signal delay circuit module installed to the comparator circuit module and an enable signal delay circuit module installed to the NDFA circuit module to thereby constitute a multi-sage pipeline architecture that allows a faster processing speed than the prior art.

A security USB connector implements an intrusion prevention function preventing the propagation of malicious codes to a host terminal from a USB device while minimizing host terminal resource consumption, and an intrusion prevention system using the same are disclosed. A security USB connector is positioned between the host terminal supporting a USB host and a USB device, and a security inspection is performed on data transferred from the USB device to the host terminal through the security USB connector. Also, a host terminal without an intrusion prevention function can prevent an intrusion by using the portable security USB connector.

Some embodiments of the invention introduce cloud template awareness in the service policy framework. Some embodiments provide one or more service rule processing engines that natively support (1) template-specific dynamic groups and template-specific rules, and (2) dynamic security tag concepts. A service rule processing engine of some embodiments natively supports template-specific dynamic groups and rules as it can directly process service rules that are defined in terms of dynamic component groups, template identifiers, template instance identifiers, and/or template match criteria. Examples of such services can include any kind of middlebox services, such as firewalls, load balancers, network address translators, intrusion detection systems, intrusion prevention systems, etc.

An intrusion prevention/detection system filter (IPS filter) performance evaluation is provided. The performance evaluation is performed at both the security center and at the customer sites to derive a base confidence score and local confidence scores. Existence of new vulnerability is disclosed and its attributes are used in the generation of new IPS filter or updates. The generated IPS filter is first tested to determine its base confidence score from test confidence attributes prior to deploying it to a customer site. A deep security manager and deep security agent, at the customer site, collect local confidence attributes that are used for determining the local confidence score. The local confidence score and the base confidence score are aggregated to form a global confidence score. The local and global confidence scores are then compared to deployment thresholds to determine whether the IPS filter should be deployed in prevention or detection mode or sent back to the security center for improvement.

A method and apparatus for facilitating reduction in successful attacks on a monitored data processing system, such as a host computer. An intrusion detection system comprises a host or application based sensor for detecting code based intrusions with a relatively low false-positive rate. Malicious code strings related to a detected intrusion are identified, extracted and forwarded to a pattern filter located in the monitored data processing system to prevent further intrusions using said malicious code strings. The malicious code strings may be forwarded to a response server for assembling sets of similar malicious code strings for which signatures are generated to permit identification of all malicious code strings contained in a set. The generated signatures are then distributed to monitored and/or monitoring systems of a protected network to prevent further intrusions using the malicious code strings and variations thereof.

A system and method for extending the implementation of one or more Intrusion Prevention Systems (IPSs) such that each user can be placed in the IPS traffic path to create secure containment areas at a granular level, port types and port counts are increased, and higher network connection speeds are supported. In different embodiments of the invention, traffic load is balanced across two or more IPSs, enabling enhanced availability during system failures, replacements or updates. IPS performance is improved by enhancing traffic management of “trusted” (e.g., pass-through) and “known bad” (e.g., discarded) traffic flows and decreasing configuration task workloads. Other embodiments of the invention include, but are not limited to, extending the implementation of proxy devices, virtual private networks (VPNs), session border controllers (SBCs), firewalls, protocol gateways and other bump-in-the-wire systems.

The invention relates to a Chinese variation text matching recognition method. The method comprises the following steps of: performing special encoding conversion on a target text and a mode character string to improve the similarity of texts; adding proper wildcard characters into the converted mode character string according to the structural characteristics of Chinese characters in the mode character string; and matching by using a precise character string matching algorithm (namely a CV-BM algorithm). The method solves the problems of the replacement of characters with similar shapes in the variation text and the matching difficulty based on the replacement of wrongly written characters with similar shapes. The problems of the replacement of the characters with the similar shapes in the variation text and the matching difficulty based on the replacement of wrongly written characters with the similar shapes can be solved. Compared with an image partitioning recognition method, the method has smaller time and space complexities, is more suitable for the quick matching of Chinese character information in a high-speed network data transmission environment, and can be widely applied to systems needing to match the Chinese character information, such as an intrusion prevention system, an information retrieval system and the like.