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csci4211-what-we-learned-last-time
csci4211-what-we-learned-last-time

... • Project #1: out today, and Due Friday Oct 8 (11:59 pm). Please start working on it as soon as possible! • Written Homework Assignment #1 will be posted by Sep 30, due Thu Oct 14 (6:30pm) ...
atm98-786
atm98-786

... UNITE can potentially help by setting up the connection quickly – provide a VPI/VCI to allow transmission of data quickly ...
Slides - the GMU ECE Department
Slides - the GMU ECE Department

... • Share size is dependent upon network size and bandwidth • Round-trip broadcast authentication is exponentially proportional to the network size Round Trip time ...
ICMP
ICMP

... ICMP provides a feedback mechanism when an IP message is sent. In this example, device A sends an IP datagram to device B. When it gets to router R3 a problem of some sort is detected, dropping the datagram. R3 sends an ICMP message back to A to tell it that something happened, hopefully with enough ...
Introduction - GMU Computer Science
Introduction - GMU Computer Science

... • If you’re publicly traded in most countries, you must have an information security policy • If you’re publicly traded in the US, you must have an information security policy which is compliant with SOX requirements, which generally means COBIT controls • If you’re privately held, but have more tha ...
shuffling:improving data security in ad hoc networks based
shuffling:improving data security in ad hoc networks based

... often than to other nodes, the attacker will be able to expect that the node is important for the network, and disabling it could bring the entire network down. Unlike passive attacks, active attacks are often detectable. An active attack can mainly be: Blackhole attack, where a malicious node uses ...
lect04
lect04

... imagination. And a couple of laws of physics.  TCP/IP, HTTP  How, Why, What, When? ...
Routing Information Protocol
Routing Information Protocol

... Security: all OSPF messages authenticated (to prevent malicious intrusion) Multiple same-cost paths allowed (only one path in RIP) For each link, multiple cost metrics for different TOS (e.g., satellite link cost set “low” for best effort; high for real time) Integrated uni- and multicast support: ❍ ...
Traffic Engineering over MPLS
Traffic Engineering over MPLS

... • Assign short fixed length labels to packets at the ingress to an MPLS cloud, which is used to make forwarding decisions inside the MPLS domain. ...
AODV-BR: Backup Routing in Ad hoc Networks
AODV-BR: Backup Routing in Ad hoc Networks

... Ad-hoc network is a self-organized,dynamically changing multihop network. All mobile nodes in an ad-hoc network are capable of communicating with each other without the aid of any established infrastructure or centralized controller. ...
Infinite CacheFlow in Software-Defined Networks
Infinite CacheFlow in Software-Defined Networks

... tuple” (e.g., source and destination IP addresses, transport protocol, and source and destination port numbers), while a server load-balancing application may match on the destination IP address and the source IP prefix. The finer the granularity of the policies, the larger the number of rules in th ...
class18 - eecis.udel.edu
class18 - eecis.udel.edu

... Multiple same-cost paths allowed (only one path in RIP) For each link, multiple cost metrics for different TOS (e.g., satellite link cost set “low” for best effort; high for real time) Integrated uni- and multicast support:  Multicast OSPF (MOSPF) uses same topology data base as OSPF Hierarchical O ...
Key characteristics that distinguish the Internet
Key characteristics that distinguish the Internet

... will see below, this is not the case. Nor is the Internet immune from state actions, even if its routing is not based on national borders and thus it may be more difficult for states to enforce certain laws. It is sometimes said that end-to-end, packet-switching, and connectionless operation are uni ...
PowerPoint version
PowerPoint version

... Packet-Switching: Message Segmenting Now break up the message into 5000 packets  Each packet 1,500 bits  1 msec to transmit ...
國立聯合大學電子工程學系蕭裕弘
國立聯合大學電子工程學系蕭裕弘

... computers (plus the information and services they provide to their users) that uses the TCP/IP suite of packet switching communications protocols.  The Internet is composed of many interconnected computer networks. Each network may link tens, hundreds, or even thousands of computers, enabling them ...
Standards
Standards

... Internet Layer Protocols – Standards at the internet layer specify how hosts and routers will act to route packets end to end, from the source host to the destination host, across many single ...
t 2
t 2

... If an error-free frame is received from B containing RN>SNmin,increase SNmin to RN If SNmin
QualNet tutorial 1
QualNet tutorial 1

...  Use the powerful tool: screen  a terminal multiplexer that allows a user to access multiple separate terminal sessions inside a single terminal window.  allows the user to start applications from one computer, and then reconnect from a different computer and continue using the same application w ...
Part I: Introduction
Part I: Introduction

... from host to host in the network, to deliver them to their destination. This layer involves each and every host and router in the network. We will study the key principles and algorithms of routing, with a focus on the Internet Protocol (IP) service model. 4: Network Layer ...
Chapter 8 Fundamentals of Internet
Chapter 8 Fundamentals of Internet

... each other in a faster and effective way,  Researchers can gather information in their respective area of research.  With help of video conferencing over Internet, it has become possible that people can even see each other while communicating  Even one can do all his shopping sitting back at home ...
Power Control
Power Control

... towards other packet switch networks such as the internet. The Session Management responsibility is also located on the GGSN. ...
Cross Stratum Optimization
Cross Stratum Optimization

... 79th IETF @ Beijing, China ...
introduction to computer networks - Information Technology Center
introduction to computer networks - Information Technology Center

...  Most popular: inexpensive, easy to install and maintain.  Based on a ring topology; but can use a star topology;  Token-passing scheme to prevent collision of data;  The second most widely-used protocol after Ethernet.  Based on client/server model of network computing;  Uses packet switching ...
VIRTUAL PRIVATE NETWORKS (VPN)
VIRTUAL PRIVATE NETWORKS (VPN)

... public network security issues and proper deployment of precautions Availability and performance depends on factors largely outside of their control Immature standards VPNs need to accommodate protocols other than IP and existing internal network technology ...
Document
Document

... [email protected] ...
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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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