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Profile Documents Logout
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PDF
PDF

... Critical-path driven process • If we can identify common patterns or use cases apriori (or perhaps by analysis of workloads from other similar systems for which data exists)... – Permits us to recognize in advance that particular code paths will arise often and will really determine performance for ...
Lesson 11
Lesson 11

... Two level addressing (network and host) wastes space Network addresses used even if not connected to Internet Exponential growth of the Internet Single address per host ...
topics
topics

... human solution, NOT network solutions  A packet switch cannot enforce policy if you want to have a productive and scaleable network ...
Guide to Firewalls and Network Security with Intrusion Detection and
Guide to Firewalls and Network Security with Intrusion Detection and

... such as port, IP address, and protocol Review the header, strip it off, and replace it with a new header before sending it to a specific location within the network Fundamental components of firewalls ...
$doc.title

... https://www.facebook.com/SDSAtUMD   ...
$doc.title

... Seamless mobility and migration Server load balancing Dynamic access control Using multiple wireless access points Energy-efficient networking Adaptive traffic monitoring Denial-of-Service attack detection Network virtualization See http://www.openflow.org/videos/! ...
Router Architecture
Router Architecture

... algorithms to support priorities and guarantees. Support data link layer functionality. ...
Sales Meeting - Draware A/S | Tlf. (+45) 45 76 20 21 | Vi
Sales Meeting - Draware A/S | Tlf. (+45) 45 76 20 21 | Vi

...  Packetized voice traffic sent over an IP network  Competes with other traffic on the network  A new technology that needs real-time, consistent monitoring  Sensitive to delay  Understanding VoIP Begins with Understanding Delay  Normal (not sensitive to delay) example: FTP, HTTP, e-mail, etc. ...
intro-Routing240
intro-Routing240

... • Connection oriented (state at end points, handshake - TCP) • Connectionless (no state at end points - UDP) ...
Performance Metric
Performance Metric

... • Nodes: PC, special-purpose hardware… – hosts – switches ...
Basic Concepts
Basic Concepts

... but bulk of the design, installation, equipment, and maintenance falls to the Communications Company.  Pros: Less expensive, less administration and management  Cons: Less control, potential security issues, less performance predictability ...
1-ITN-chap-3g
1-ITN-chap-3g

...  Application Protocol - Hypertext Transfer Protocol (HTTP) is a protocol that governs the way a web server and a web client interact.  Transport Protocol - Transmission Control Protocol (TCP) is the transport protocol that manages the individual conversations between web servers and web clients.  ...
Traffic Engineering
Traffic Engineering

... Calculates the routes for traffic demands for edge nodes Service providers then set up MPLS explicit routes between edge routes and match traffic demands over them, creating a full-mesh network Suffers from N-square problem, problems with scalability ...
Networking Equipment
Networking Equipment

... Switch: Because the hub is something of a “drunk,” it can be an inefficient (think about the excess traffic created) and unsecure device. Imagine if you wish to send sensitive credit card information over the network – do you really want every node to receive your electronic signal? To alleviate thi ...
PowerPoint 97
PowerPoint 97

... Transmission Control Protocol (TCP) ...
Flow-based Performance Measurement
Flow-based Performance Measurement

... IP Performance Monitoring based on flow/applications is needed in many cases. For mobile operator’s backhaul network, the applications are devided into multiple bearers with proper mobile QoS parameters (e.g. QCI). If the mobile network would manage bearers as QoS and applications, then the performa ...
Dasar Jaringan Komputer
Dasar Jaringan Komputer

... • Relative importance of bandwidth and latency depends on application – For large file transfer, bandwidth is critical – For small messages (HTTP, NFS, etc.), latency is critical – Variance in latency (jitter) can also affect some applications (e.g., audio/video conferencing) ...
ITGS
ITGS

... – Arranged as a RAID array » Redundant Array of Independent Disks - failover system for hard disks in which multiple hard disks are connected together » the info from one hard disk is mirrored onto another one every time something is saved, so that if a hard disk fails, the computer switches to its ...
TCP/IP Protocol Architecture
TCP/IP Protocol Architecture

... other related matters ...
File
File

...  In default discard policy initially, everything is blocked, and services must be added on a caseby-case basis.  The default forward policy increases ease of use for end users but provides reduced security. One advantage of a packet-filtering router is its simplicity and transparent to users and a ...
슬라이드 1
슬라이드 1

... [email protected] [email protected] ...
Protocol Architecture, TCP/IP, and Internet
Protocol Architecture, TCP/IP, and Internet

... – other related matters ...
Slide Set 1
Slide Set 1

...  Demand for devices capable of precisely recording ...
Communication - Cs.princeton.edu
Communication - Cs.princeton.edu

... –… and the server IP address and port number –Problem: users may log in to another machine  E.g., connect from the dorms to another host  … and then onward to the blocked server ...
Networking Basics and Internet Protocol Stack
Networking Basics and Internet Protocol Stack

... Telco Networks (2 of 2) • Call routing and circuit allocation decided once per call at time of call arrival • End to end path allocation, with dedicated circuit (reserved bandwidth) per active call • All bits travel same path; stay in same order • Call state information crucial in network switches ...
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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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