37 results about "Request for Comments" patented technology

A method and system for a secure telephone protocol are disclosed, which can be implemented using current Voice over IP (VoIP) protocols, Session Initiation Protocol (SIP, as specified in the Request for Comment (RFC) 3261 from the Internet Engineering Task Force (IETF)), Real Time Transport Protocol (RTP, as specified in RFC 3550), and Secure RTP (SRTP, as specified in RFC 3711). The secure telephone protocol can include a shared secret value that is cached and then re-used later to authenticate a long series of session keys to be used for numerous separate secure phone calls over a long period of time, thereby providing cryptographic key continuity without the need for voice authentication. In an embodiment, the secure telephone protocol can utilize the Diffie-Hellman key exchange during call setup, and AES for encrypting the voice stream.

A firewall system determines whether a protocol used by an incoming data packet is a standard protocol compliant with Request For Comment (RFC) standards. In the event the protocol is RFC compliant, the firewall transmits the packet to the recipient according to firewall policies regarding the standard protocol. If the protocol is not that of an RFC standard, the firewall determines whether the protocol matches an RFC-exception protocol in a RFC-exception protocol database. If the protocol does match an RFC-exception, the firewall may transmit the packet to the recipient according to firewall policies regarding the RFC-exception protocol. If it does not match an RFC-exception, the firewall may transmit the packet or protocol to a support system where it may be quarantined until it is approved based on a decision that the protocol is safe and / or widely adopted.

Methods for cryptographic synchronization of data packets. A roll-over counter (ROC) value is periodically appended to and transmitted with a data packet when a function of the packet sequence number equals a predetermined value. The ROC effectively synchronizes the cryptographic transformation of the data packets. Although the disclosed methods are generally applicable to many transmission protocols, they are particularly adaptable for use in systems wherein the data packets are transmitted to a receiver using the Secure Real-Time Transport Protocol (SRTP) as defined in Internet Engineering Task Force (IETF) Request for Comments (RFC) 3711.

A method for transmitting content in a call established via media gateway control protocol includes: encrypting an RFC, Request for Comment, 2833 message with a first key; and sending out the encrypted RFC2833 message. The key used for encryption and decryption may be configured in advance on a calling and a called media gateways, or be sent from a soft switch device once and for all, or be sent from the soft switch device every time when a call is initiated. The key sent from the soft switch device may be in clear text or be encrypted. The technical scheme of the present invention greatly improves the security of the content in the RFC2833 protocol transmission.

The invention discloses a formalization detection method for a malicious URL (uniform resource locator). The formalization detection method comprises the following steps of: splitting the URL to be detected into syntactic element character strings according to a URL syntactic structure on the basis of the standard of RFC (request for comments); extracting designated character strings from the character strings obtained by splitting; performing completing treatment on the non-existent character strings; reordering the character strings obtained after completing treatment to obtain a new URL, and calculating the hash value of the new URL; and traversing a malicious URL feature library, and performing contrast detection on feature data in the malicious URL feature library and the hash value of the URL to be detected. The invention further discloses a formalization detection system for the malicious URL. The technical scheme disclosed by the invention can be effectively used against the variability in the formats of the URL; and compared with the traditional URL detection method, the detection rate against the malicious URL which often changes the format is higher, and a single feature can also be adopted for corresponding to multiple format variants of the malicious URL, so that the volume of a virus feature library required for the detection method is smaller, and the space of a memory and a magnetic disk can be further saved.

The invention discloses a method for realizing PIM multicast in a VRRP network environment, by carrying a virtual IP address when sending a PIM Hello message on an interface enabled with VRRP, and using VRRP when receiving the PIM Hello message The establishment of PIM neighbors with virtual IP addresses can enable unicast and multicast services to be active and standby at the same time in the VRRP network environment. At the same time, it is fully compatible with the current RFC protocol, which solves the problem that VRRP and multicast cannot be deployed at the same time. At the same time, it also discloses a device for realizing PIM multicast in a VRRP network environment, including a sending module and a receiving module. The router of the packet establishes a PIM neighbor relationship with a real address or a virtual IP address. The invention has simple protocol and flexible deployment, can realize the co-deployment of VRRP and multicast, and allows active and standby of unicast and multicast at the same time.

The invention discloses an email receiving and sending system implemented by using Bluetooth. The system comprises a packaging module, a search module, a connection module and a sending module, wherein the packaging module is used for packaging emails conforming to an RFC2822 (request for comments) format into an OPP (object push profile) format which can be identified by Bluetooth; the search module is used for searching the Bluetooth of a receiving party in a coverage area; the connection module is used for reading a Bluetooth matching chain list of a sending party, and establishing a connection between the Bluetooth of the sending party and the Bluetooth of the receiving party; and the sending module is used for prompting the receiving party to confirm whether to agree to receive the email, when the receiving party refuses to receive the email, prompting a situation of failing to send the email and ending the operation, and when the receiving party agrees to receive the email, sending the email through an OPP protocol. The invention also provides an email receiving and sending method implemented by using Bluetooth. According to the invention, an effect of sending and receiving emails by using Bluetooth in a mobile phone can be achieved, operations of email sending and receiving are convenient and quick, and no flow fee is required to be paid.

The invention discloses a multi-stage hierarchical bandwidth management method, which comprises the following steps of: A10, configuring CIR (Committed Information Rate) and PIR (peak Information Rate) (or EIR (Excess Information Rate)) of each stage of scheduling node according to a business model, wherein the CIR of the node is set according to the bandwidth purchased by a user in the first stage, the bandwidth distribution principle of each node from the second stage of scheduling is shown in the description, EIRni=PIRni-CIRni, and n is not less than 2; and A20, respectively marking messages as green, yellow or red by using MEF (Managed Extensibility Framework), RFC2697 (Request for Comments 2697) or RFC2698 algorithms in the first stage, configuring each node into a color sensitive mode and a coupling mode from the second stage, and shaping the traffic according to the MEF algorithm. By using the invention, the multi-stage hierarchical bandwidth management is realized on an exchanging chip supporting the MEF Traffic Shaping algorithm without need of special ASIC (Application Specific Integrated Circuits) or hardware; and the requirements are satisfied through updating software under the situation of changing or updating the business so that considerable hardware cost is saved; and the bandwidth distribution algorithm of the hierarchical business model is simple and convenient for web masters to configure.

Embodiments of the present invention provide an interaction method and user equipment. A method includes: receiving a first content tag of a content being displayed by a display device; sending a comment request, the comment request being associated with the first content tag; and receiving at least one comment on the content. The embodiment of the present invention provides an interaction solution, so that a user can request to obtain other users' viewpoints or views on the content while watching a content.

#CMT# # / CMT# The device has an admission unit i.e. admission component, for inserting a new node within a peer-to-peer network (Np2p) of a communication element (E1) e.g. application server in a communication architecture, where the network is composed of nodes (N1-N5). The admission unit determines the adjacent nodes deployed on a same processing equipment, and inserts the new node between the nodes. The nodes (N1-N5) are arranged in circular form such that each node possesses a single successor node and a single predecessor node. #CMT# : # / CMT# An independent claim is also included for a communication element comprising a peer-to-peer network. #CMT#USE : # / CMT# Device for managing a peer-to-peer network of a communication element (claimed) e.g. application server in a communication architecture i.e. Internet protocol multimedia subsystem architecture, or signaling element e.g. proxy conforming to a session initiation protocol defined by Request for Comments (RFC) 3261 of Internet Engineering Task Force (IETF), or call session control function within the architecture. #CMT#ADVANTAGE : # / CMT# The device is configured such that two of the nodes are not present in the same processing equipment, thus limiting the simultaneous failure of the nodes, while eliminating the need for changing fault-tolerant mechanisms. #CMT#DESCRIPTION OF DRAWINGS : # / CMT# The drawing shows a schematic view of a communication element. E1, E2 : Communication equipments LB : Load distribution module Np2p : Peer-to-peer network N-TEL : Communication network N1-N5 : Nodes.