|
Snooping (other)
"Snooping" can refer to: Computer science * Bus sniffing, also known as ''bus snooping'' * IGMP snooping * DHCP snooping * and in general listening in to any kind of communication protocol (such as ARP, TCP and so on) Statistics * Data-snooping bias, a concept in statistics See also * Snoop (other) * Snoopy (other) Snoopy is a dog in the comic strip ''Peanuts'' by Charles M. Schulz. Snoopy may also refer to: * Snoopy (band), Dutch disco duo of the late 1970s * Snoopy (artist), Quincy Delight Jones III (born 1968), a Swedish-American producer and author * S ... * Sniffing (other) {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bus Sniffing
Bus snooping or bus sniffing is a scheme by which a coherency controller (snooper) in a cache (a snoopy cache) monitors or snoops the bus transactions, and its goal is to maintain a cache coherency in distributed shared memory systems. A cache containing a coherency controller (snooper) is called a snoopy cache. This scheme was introduced by Ravishankar and Goodman in 1983. How it works When specific data is shared by several caches and a processor modifies the value of the shared data, the change must be propagated to all the other caches which have a copy of the data. This change propagation prevents the system from violating cache coherency. The notification of data change can be done by bus snooping. All the snoopers monitor every transaction on a bus. If a transaction modifying a shared cache block appears on a bus, all the snoopers check whether their caches have the same copy of the shared block. If a cache has a copy of the shared block, the corresponding snooper performs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IGMP Snooping
IGMP snooping is the process of listening to Internet Group Management Protocol (IGMP) network traffic to control delivery of IP multicasts. Network switches with IGMP snooping listen in on the IGMP conversation between hosts and routers and maintain a map of which links need which IP multicast transmission. Multicasts may be filtered from the links which do not need them, conserving bandwidth on those links. IGMP snooping is described in an informational IETF RFC but affects bridging operations, the purview of the IEEE. Because of a lack of an authoritative standard, the process may operate differently on different equipment. Purpose A switch will, by default, flood multicast traffic to all the ports in a broadcast domain (or the VLAN equivalent). Multicast can cause unnecessary load on host devices by requiring them to process packets they have not solicited. When purposefully exploited, this can form the basis of a denial-of-service attack. IGMP snooping is designed to pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DHCP Snooping
In computer networking, DHCP snooping is a series of techniques applied to improve the security of a DHCP infrastructure. DHCP servers allocate IP addresses to clients on a LAN. DHCP snooping can be configured on LAN switches to exclude rogue DHCP servers and remove malicious or malformed DHCP traffic. In addition, information on hosts which have successfully completed a DHCP transaction is accrued in a database of ''bindings'' which may then be used by other security or accounting features. Other features may use DHCP snooping database information to ensure IP integrity on a Layer 2 switched domain. This information enables a network to: * Track the physical location of IP addresses when combined with AAA accounting or SNMP Simple Network Management Protocol (SNMP) is an Internet Standard protocol for collecting and organizing information about managed devices on IP networks and for modifying that information to change device behaviour. Devices that typically ... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Address Resolution Protocol
The Address Resolution Protocol (ARP) is a communication protocol used for discovering the link layer address, such as a MAC address, associated with a given internet layer address, typically an IPv4 address. This mapping is a critical function in the Internet protocol suite. ARP was defined in 1982 by , which is Internet Standard STD 37. ARP has been implemented with many combinations of network and data link layer technologies, such as IPv4, Chaosnet, DECnet and Xerox PARC Universal Packet (PUP) using IEEE 802 standards, FDDI, X.25, Frame Relay and Asynchronous Transfer Mode (ATM). In Internet Protocol Version 6 (IPv6) networks, the functionality of ARP is provided by the Neighbor Discovery Protocol (NDP). Operating scope The Address Resolution Protocol is a request-response protocol. Its messages are directly encapsulated by a link layer protocol. It is communicated within the boundaries of a single network, never routed across internetworking nodes. Packet structure The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transmission Control Protocol
The Transmission Control Protocol (TCP) is one of the main protocols of the Internet protocol suite. It originated in the initial network implementation in which it complemented the Internet Protocol (IP). Therefore, the entire suite is commonly referred to as TCP/IP. TCP provides reliable, ordered, and error-checked delivery of a stream of octets (bytes) between applications running on hosts communicating via an IP network. Major internet applications such as the World Wide Web, email, remote administration, and file transfer rely on TCP, which is part of the Transport Layer of the TCP/IP suite. SSL/TLS often runs on top of TCP. TCP is connection-oriented, and a connection between client and server is established before data can be sent. The server must be listening (passive open) for connection requests from clients before a connection is established. Three-way handshake (active open), retransmission, and error detection adds to reliability but lengthens latency. Applica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Data-snooping Bias
Data dredging (also known as data snooping or ''p''-hacking) is the misuse of data analysis to find patterns in data that can be presented as statistically significant, thus dramatically increasing and understating the risk of false positives. This is done by performing many statistical tests on the data and only reporting those that come back with significant results. The process of data dredging involves testing multiple hypotheses using a single data set by exhaustively searching—perhaps for combinations of variables that might show a correlation, and perhaps for groups of cases or observations that show differences in their mean or in their breakdown by some other variable. Conventional tests of statistical significance are based on the probability that a particular result would arise if chance alone were at work, and necessarily accept some risk of mistaken conclusions of a certain type (mistaken rejections of the null hypothesis). This level of risk is called the ''si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snoop (other)
Snoop is a noun referring to a busybody who pries into the business of others; it is also a verb referring to the act of snooping. Snoop may also refer to: People with the name * Snoop Conner (born 2000), American football player * Snoop Dogg, an American rapper, actor and music producer * Felicia Pearson, nicknamed "Snoop", the actress who plays the eponymous character on ''The Wire'' Arts, entertainment, and media * Snoop (''The Wire''), a character in the television series ''The Wire'' * Snoopy, a famous Beagle in the comic strip ''Peanuts'' Computing and technology * Snoop (software), a utility to capture and inspect network packets, included with the Solaris operating system * Bus snooping in a microprocessor's cache coherency mechanism Other uses *Eastern Ultralights Snoop, a family of ultralight aircraft See also *Snooping (other) *Snoopy (other) Snoopy is a dog in the comic strip ''Peanuts'' by Charles M. Schulz. Snoopy may also refer to: * Snoop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snoopy (other)
{{Disambiguation ...
Snoopy is a dog in the comic strip ''Peanuts'' by Charles M. Schulz. Snoopy may also refer to: * Snoopy (band), Dutch disco duo of the late 1970s * Snoopy (artist), Quincy Delight Jones III (born 1968), a Swedish-American producer and author * Snoopy (video game), a 1984 game by Radarsoft * Snoopy, an Australian human-powered airship * ''Snoopy'', Lunar Module for Apollo 10 See also *Snoop (other) *Snooping (other) "Snooping" can refer to: Computer science * Bus sniffing, also known as ''bus snooping'' * IGMP snooping * DHCP snooping * and in general listening in to any kind of communication protocol (such as ARP, TCP and so on) Statistics * Data-snoopin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
