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Chapter 1 - EECS User Home Pages
Chapter 1 - EECS User Home Pages

...  If you use these slides (e.g., in a class) in substantially unaltered form, that you mention their source (after all, we’d like people to use our book!)  If you post any slides in substantially unaltered form on a www site, that you note that they are adapted from (or perhaps identical to) our sl ...
Chapter8R_backup
Chapter8R_backup

... If no reply by T2, host broadcasts DHCP Request to any server If no reply by T, host must relinquish IP address and start from the beginning ...
Part I: Introduction
Part I: Introduction

... Internet structure: network of networks  “Tier-2” ISPs: smaller (often regional) ISPs  Connect to one or more tier-1 ISPs, possibly other tier-2 ISPs ...
CIT 016 Review for Final
CIT 016 Review for Final

... workstation, server, switch, or router  This equipment has basic security features that you can use to harden the devices ...
Chapter 1
Chapter 1

...  If you use these slides (e.g., in a class) in substantially unaltered form, that you mention their source (after all, we’d like people to use our book!)  If you post any slides in substantially unaltered form on a www site, that you note that they are adapted from (or perhaps identical to) our sl ...
Presentation - Karl Thomas Rees
Presentation - Karl Thomas Rees

... since sender must keep track of state for all receivers in group. • Receiver-initiated error recovery (negative acks) lets receivers keep state, but since we use negative acks, sender must keep very large buffer and make assumptions about when its safe to take something out of the buffer. • Both str ...
PPT - Yuan Cheng
PPT - Yuan Cheng

... NULL algorithm (no MAC computed) ...
Slide 1
Slide 1

... Executive Summary • The network industry is starting to restructure • The trend: “Software Defined Networks” – Separation of control from datapath – Faster evolution of the network ...
Specialized Packet Forwarding Hardware
Specialized Packet Forwarding Hardware

... Executive Summary • The network industry is starting to restructure • The trend: “Software Defined Networks” – Separation of control from datapath – Faster evolution of the network ...
Limitations of Layer2 switching
Limitations of Layer2 switching

... Note that when two sources subscribe to the same source, links that they share in common don’t need to reserve 2X the amount of bandwidth. RSVP has evolved into a popular mechanism for receivers to request resources in a network. It is an entire Protocol and will be discussed in more detail later du ...
FileSharing
FileSharing

... File contains tracker information for the download Tracker tells client where to find other clients Query other clients for pieces of file Client downloads and uploads parts of file to each other until everyone has it ...
Slaid_05 - narod.ru
Slaid_05 - narod.ru

... Definition related to Internet (1) 1. Domain. Every country is assigned a certain code marking two-three Latin letters long, which is called first level domain. If the address ends with letters "ru", then corresponding site is situated in the Russia’s domain. There are also first level domains, whi ...
- Lancaster University
- Lancaster University

... The analysis of the self-similar and long range dependence is achieved by the Selfis tool [13] from Thomas Karagiannis et al. The data in the 5400-6000s time section is used as the analysis basis of download and upload traffic. Fig.5 shows both the download and upload traffic analysis results of R/S ...
Accompanying slides for Project 5
Accompanying slides for Project 5

...  For debugging purposes  Set BCAST_TOPOLOGY_FILE  Provide a topology file (see project description)  Used only in CSUGLAB (not on Jornada/Tablets) ...
Chap1-Introduction - Home
Chap1-Introduction - Home

... • It is made up of many WANs and LANs joined by connecting devices and switching stations. • It has an hierarchical structure based on TCP/IP suite protocols. • End users who want Internet connection use the service of an ISP (Internet Service Provider). • ISPs hierarchy – International ISPs (top le ...
Review Questions
Review Questions

... 17. A UNIX and Linux defense that does not store password hashes in a worldreadable file is known as a _________. A. shadow password B. passwd restriction C. master file relocation D. locked psswrd file 18. _____ is a method of evaluating the security of a computer system or network by simulating a ...
One-way Data Delivery Networks
One-way Data Delivery Networks

... To receive a file, the file must first be identified, and after identification and reception all packets or a recoverable subset thereof must be reconstituted and checksummed/verified in part and whole. To accomplish this a transmission system will use any of a number of mechanisms, including but no ...
CSE331-13
CSE331-13

... – Describe the kind of service needed • “I need maximum delay of 100ms” • “I need to use controlled load service” ...
Slide 1
Slide 1

...  Layer 3 addresses are primarily designed to move data from one local network to another local network within an internetwork.  At the boundary of each LAN a router, decapsulates the frame to read the destination host address contained in the header of the packet.  Routers use the Layer 3 destina ...
Chapter1-Intro - Communications Systems Center (CSC)
Chapter1-Intro - Communications Systems Center (CSC)

... Network access and physical media Internet structure and ISPs 1.4 Delay & loss in packet-switched networks 1.5 Protocol layers, service models ...
Overlay Networks and Tunneling  Reading: 4.5, 9.4 Mike Freedman
Overlay Networks and Tunneling  Reading: 4.5, 9.4 Mike Freedman

... –  And, since it didn’t exist, nobody was using it  ...
CSE331
CSE331

... • The network part of the address uniquely identifies a single network that is part of the larger Internet. • All hosts and routers that share the same network part of their address are connected to the same physical network. • Routers can exchange packets on any network they’re attached to. CSE331 ...
Lab 5.5.2: Access Control Lists Challenge
Lab 5.5.2: Access Control Lists Challenge

... LAN at R3 and that the LAN on R3 cannot reach the LAN on R1. Be specific in your statements so that any new LANs added to either R1 or R3 are not affected. ...
A threat can be any person, object, or event that, if realized, could
A threat can be any person, object, or event that, if realized, could

... unauthorized modification, destruction, or disclosure. Privacy – Protecting confidential details of a person or a network. Threats & vulnerabilities effect security of a network, which in turn, implies that the privacy of the network ...
"An Empirical Workload Model for Driving Wide-Area TCP/IP Network Simulations"
"An Empirical Workload Model for Driving Wide-Area TCP/IP Network Simulations"

... applications responsible for 96% of wide area TCP traffic. We believe these applications are representative of applications currently running on wide-area networks other than the Internet. Two related studies, one at University College London and the other at Lawrence Berkeley Laboratory, identified ...
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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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