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PPT
PPT

... is statistically self-similar, that none of the commonly used traffic models is able to capture this fractal behavior, that such behavior has serious implications for the design, control, and analysis of high-speed…” ...
Introduction to Quality of Service (QoS)
Introduction to Quality of Service (QoS)

... You do not want to get low quality service for paying high monthly bills. Preference has to be given to customers who pay more to get better service, without affecting the remaining customers who pay normal amount. ...
1. Communication Network
1. Communication Network

... Hybrid Networks • Both wireless and wireline components – Example: satellite-fiber networks – Example: wired LAN on aircraft with flying router having wireless connection to terrestrial network ...
2/6 Matt - Dr. John Durrett
2/6 Matt - Dr. John Durrett

... If a specific route to B exists, use this route (i.e., send the packet using the interface specified in the table) If a specific route to B’s network exists, use this route In the special case where A and B are in the same subnet (if the first a bits of A and B match), send the packet directly to B ...
Chapter 6 Business Networks & Telecommunications
Chapter 6 Business Networks & Telecommunications

... Emits a signal activating the RFID tag so that the interrogator can READ/WRITE data to it Readers decode data stored in tag’s memory and data passed to host computer ...
intro - UTRGV Faculty Web
intro - UTRGV Faculty Web

... programs The goal of this course is not to teach you programming. Students should write three socket programs in a language of their choice ...
IDS
IDS

... which has scalability issues. Thus they might not be able to detect the worm in its early stage. ...
Wireless Data Tutorial
Wireless Data Tutorial

... Mobile user keeps fixed IP address IP packets to the mobile user are received by the home agent and tunneled to his current location The most transparent form of mobility ...
Ch02
Ch02

... Need For Protocol Architecture • E.g. File transfer —Source must activate communication path or inform network of destination —Source must check destination is prepared to receive —File transfer application on source must check destination file management system will accept and store file for his u ...
Network Management - Department of Computer Science, HKBU
Network Management - Department of Computer Science, HKBU

... Three parties: the attacker, the intermediary, and the victim The attacker creates forged packets (ICMP echo request) that contain the spoofed source address of the attacker's intended victim. The intermediary receives an ICMP echo request packet directed to the IP broadcast address of their network ...
Lecture 6: Vector
Lecture 6: Vector

... message, and then starts forwarding it immediately – In worm hole routing, when head of message is blocked, message stays strung out over the network, potentially blocking other messages – Cut through routing lets the tail continue when head is blocked, accordioning the whole message into a single s ...
Tutorial - University of Hawaii
Tutorial - University of Hawaii

... lower frequencies (down to about 20Hz) • Use more bits to encode information about lower frequencies, fewer bits for information about higher frequencies • Humans think reconstructed signal sounds the same as (or similar to) the original • High quality requires high data rate ...
Data Communications and Enterprise Networking
Data Communications and Enterprise Networking

... ICMP is a network layer protocol that is encapsulated in another network layer protocol (IP) for which it provides testing and diagnostic functions. IP Version 6 incorporates the Secure Sockets Layer for its security functions. UDP uses the Internet checksum but it only protects the UDP header field ...
FCC Regulation of Non-Interconnected VoIP Services and the “Cloud”
FCC Regulation of Non-Interconnected VoIP Services and the “Cloud”

... Electronic messaging services; and Interoperable video conferencing service. ...
Optimizing Peering with Routing-Aware Traffic Analysis
Optimizing Peering with Routing-Aware Traffic Analysis

... What a Traffic Matrix Can’t Do • A traffic matrix is primarily an engineering tool. It’s an O(n^2) analysis that’s extremely useful for optimization & capacity planning but: – Can’t answer operational questions like “who filled up this link?” (requires an O(n^3) “A to B via C” analysis). – Can’t ans ...
network-performance
network-performance

... The smallest value that is larger than 95% of the values in a given sample This means that 95% of the time the channel utilization is equal to or less than this value ...
Ch02
Ch02

... Need For Protocol Architecture • E.g. File transfer —Source must activate communication path or inform network of destination —Source must check destination is prepared to receive —File transfer application on source must check destination file management system will accept and store file for his u ...
Three last frameworks
Three last frameworks

... System.” : Five new registrars - in addition to NSI – were accredited to register domain names in .com, .net, and .org ...
Session5-Group4-Networking
Session5-Group4-Networking

... In computing, a protocol is a set of rules which is used by computers to communicate with each other across a network. A protocol is a convention or standard that controls or enables the connection, communication, and data transfer between computing endpoints. In its simplest form, a protocol can be ...
www.bestitdocuments.com
www.bestitdocuments.com

... defend against • To load network attacker sends small packets as fast as possible since most devices are limited by packet processing rate and not bandwidth ...
C o n t e n t s
C o n t e n t s

... When the U.S. developing their national net,the other countries were developing too. At the end of1980s,interlinkage of different countries’ computer net appears. After that there were countries joining in every year and getting to form the present Internet. The word “Internet” became the common te ...
Tcp/ip
Tcp/ip

... • The TCP/IP stack is a four-layered set of protocols for computer networks, including the Internet • A socket is an endpoint of a communication flow on a computer network that uniquely identifies an application and device • HTTP is the set of rules that govern how multimedia files are transmitted a ...
Fundamentals of Computer Networks ECE 478/578
Fundamentals of Computer Networks ECE 478/578

... In case of congestion TCP flows will back off while UDP will stay on the same rate Can be used as an attack method (UDP flooding attack) ...
Network Security: Intrusion Detection and Protection
Network Security: Intrusion Detection and Protection

... Every connection to a host outside of the internal network is made through an application program called a proxy. Stateful Inspection Firewalls. Track the state of communication sessions and dynamically open and close ports based on access policies. ...
Aalborg Universitet Bujlow, Tomasz; Riaz, Tahir; Pedersen, Jens Myrup
Aalborg Universitet Bujlow, Tomasz; Riaz, Tahir; Pedersen, Jens Myrup

... decision rules. The first task was to collect and provide C5.0 high-quality training data, divided into groups corresponding to different types of applications. It was found that currently existing means of collecting data (classification by ports, Deep Packet Inspection, statistical classification, ...
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Deep packet inspection

Deep Packet Inspection (DPI, also called complete packet inspection and Information eXtraction or IX) is a form of computer network packet filtering that examines the data part (and possibly also the header) of a packet as it passes an inspection point, searching for protocol non-compliance, viruses, spam, intrusions, or defined criteria to decide whether the packet may pass or if it needs to be routed to a different destination, or, for the purpose of collecting statistical information. There are multiple headers for IP packets; network equipment only needs to use the first of these (the IP header) for normal operation, but use of the second header (TCP, UDP etc.) is normally considered to be shallow packet inspection (usually called Stateful Packet Inspection) despite this definition.There are multiple ways to acquire packets for deep packet inspection. Using port mirroring (sometimes called Span Port) is a very common way, as well as an optical splitter.Deep Packet Inspection (and filtering) enables advanced network management, user service, and security functions as well as internet data mining, eavesdropping, and internet censorship. Although DPI technology has been used for Internet management for many years, some advocates of net neutrality fear that the technology may be used anticompetitively or to reduce the openness of the Internet.DPI is used in a wide range of applications, at the so-called ""enterprise"" level (corporations and larger institutions), in telecommunications service providers, and in governments.
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