| Blue Coat Systems Inc. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120079101 | Behavioral Classification of Network Data Flows - Methods, apparatuses and systems facilitating enhanced classification of network traffic based on observed flow-based and/or host-based behaviors. | 03-29-2012 |
| 20110242979 | Enhanced Random Early Discard for Networked Devices - Methods, apparatuses and systems directed to enhanced random early discard mechanisms implemented in various networked devices including end-systems such as servers and intermediate systems such as gateways and routers. In one implementation, the present invention enables a random early discard mechanism that intelligently biases the drop probabilities of select packets based on one or more application-aware and/or flow-aware metrics or state conditions. | 10-06-2011 |
| 20110182291 | Facilitating Transition of Network Operations from IP Version 4 to IP Version 6 - Methods, apparatuses and systems directed to facilitating transitions from IPv4 to IPv6 networks. In particular implementations, the invention facilitates or enables accessibility of network application services between IPv4 and IPv6 hosts, or traversal of network paths including both IPv6 or IPv4 domains. Particular implementations of the invention are directed to selective mapping of network layer addresses between IPv6 and IPv4 protocols and Domain Name System records under one or more policy controls. Other implementations of the invention are directed to a proxy-to-proxy based tunnel architecture allowing hosts implementing a first network layer protocol, such as IPv4, to traverse a network implementing a second network layer protocol, such as IPv6. | 07-28-2011 |
| 20100284300 | Classification Techniques for Encrypted Network Traffic - Methods, apparatuses and systems directed to detecting network applications whose data flows have been encrypted. The present invention extends beyond analysis of explicitly presented packet attributes of data flows and holistically analyzes the behavior of host or end systems as expressed in related data flows against a statistical behavioral model to classify the data flows. | 11-11-2010 |
| 20100281168 | Assymmetric Traffic Flow Detection - Methods, apparatuses and systems directed to detecting, and in some implementations, responding to, asymmetric routing in network deployments. In a particular embodiment, a first process detects asymmetric routing at connection initiation, while the second process can detect asymmetric routing that may after connection initiation. | 11-04-2010 |
| 20100118869 | Facilitating Transition of Network Operations from IP Version 4 to IP Version 6 - Methods, apparatuses and systems directed to facilitating transitions from IPv4 to IPv6 networks. In particular implementations, the invention facilitates or enables accessibility of network application services between IPv4 and IPv6 hosts, or traversal of network paths including both IPv6 or IPv4 domains. Particular implementations of the invention are directed to selective mapping of network layer addresses between IPv6 and IPv4 protocols and Domain Name System records under one or more policy controls. Other implementations of the invention are directed to a proxy-to-proxy based tunnel architecture allowing hosts implementing a first network layer protocol, such as IPv4, to traverse a network implementing a second network layer protocol, such as IPv6. | 05-13-2010 |
| 20100027544 | LAYER-2 PACKET RETURN IN PROXY-ROUTER COMMUNICATION PROTOCOL ENVIRONMENTS - A Layer 2 packet return mechanism in a proxy, such as a web cache, operatively associated with a redirecting router. In a particular embodiment, the present invention provides a Layer 2 packet return mechanism in a Web Cache Communication Protocol (WCCP) network environment. In one embodiment, the present invention provides an efficient mechanism allowing a proxy or web cache to recognize WCCP redirected packets, forwarded using Layer 2 forwarding mechanisms, and subsequently to return unprocessed packets to the original forwarding WCCP router using a Layer 2 packet return mechanism. | 02-04-2010 |
| 20090204980 | Method for implementing ejection-safe API interception - A DLL that includes an API hook is injected into the address space of a target computer process called by an application program. Upon termination of the application program, computer-readable instructions describing a process for filtering exceptions returned from the target computer process are stored in memory locations accessible to the target computer process and the DLL is ejected from the address space. | 08-13-2009 |
| 20080244085 | System and Method of Delaying Connection Acceptance to Support Connection Request Processing at Layer-7 - Techniques for suspending a TCP three-way handshake, offering the partial connection to an L-7 application or module at a proxy to perform further processing, and then allowing the L-7 application or module to instruct the proxy's network kernel to perform various actions are described. In various embodiments these actions may include: silently dropping the connection, verbosely rejecting the connection, accepting and processing the connection locally, or forwarding the connection to another proxy or the original destination. This additional functionality is provided, in one particular embodiment, via extensions to the POSIX socket API. | 10-02-2008 |
