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Security Requirements
Security Requirements

... “In 1999, some students at the University of the South Pacific managed to get access to the system and retrieve a list of all students email passwords. This allowed them to send abusive messages to others using other students email account” ...
gla-voip-trg
gla-voip-trg

... some 10 years now, though it has certainly expanded at a staggering pace over the last couple of years. For an example of its popularity a recent analysis by the Yahoo search engine people in 2004 shows that ‘voice over IP’ was the 5th most searched phrase, for interest, Harry Potter was number 1. T ...
Solution
Solution

... If the data link layer provides a connection-oriented service to the network layer, then the network layer must precede all transfer of information with a connection setup procedure (2). If the connection-oriented service includes assurances that frames of information are transferred correctly and i ...
self-creating
self-creating

...  How communication is evolving towards future large-scale and high-speed, enabling interconnectivity between a massive amount of devices and users anywhere, at anytime and from any device?  It Will overwhelm the user with available information, applications and services, a characteristic that is n ...
Using PlanetLab for Network Research: Myths, Realities, and Best Practices
Using PlanetLab for Network Research: Myths, Realities, and Best Practices

... system that was recently inadequate or difficult to use. These experiences are especially challenging for an evolvable system, which relies on user feedback to evolve so that more users can be supported by features they desire. The purpose of this paper is to take many of these experiences, which ex ...
Network Address Translation (NAT)
Network Address Translation (NAT)

... • Firewall is connected to multiple ISP with a masquerade for each ISP and chooses which ISP to use based on client load • kind of like reverse load balancing • a dead ISP will be treated as a fully loaded one and the client will be routed through another ISP ...
Key To Personal Information Security
Key To Personal Information Security

... requests that it be broadcast to a number of hosts within that local network. The packet also indicates that the request is from a different site, i.e. the victim site that is to receive the denial of service. This is called IP Spoofing--the victim site becomes the address of the originating packet. ...
SKYWAN 5G Datasheet
SKYWAN 5G Datasheet

... unit can act either as a HUB or so-called Master Station, thus highlighting its agility in its network role. Geographical redundancy of the master station is already built-in. The device is so flexible that you can change your topology at a later point, use the unit for other networks or even split ...
Comprehensive Document Management Solutions
Comprehensive Document Management Solutions

... the expense of desktop scanners and effortlessly share information between workgroup members. • Access – and manage – documents stored in the Document Server, delivery server, client PCs or on a network file server using DeskTopBinder Lite V2 Personal Document Management software. Additionally, Desk ...
Attivo Networks Deception Platform Integrates with the Check Point
Attivo Networks Deception Platform Integrates with the Check Point

... companies of every size across many different industries. In addition to the security weaknesses, many security devices do not communicate with each other – meaning alerts raised by one device may not be passed to others in time to stop the same threat at a different point in the network. ...
Network Address Translation
Network Address Translation

... • Firewall is connected to multiple ISP with a masquerade for each ISP and chooses which ISP to use based on client load • kind of like reverse load balancing • a dead ISP will be treated as a fully loaded one and the client will be routed through another ISP ...
virtual private network(vpns)
virtual private network(vpns)

... expensive and requires more effort to administer. SSL is already available on most common Internet browsers and offers broader compatibility without requiring special software on the client computer. While SSL-based VPN has a certain attractiveness on account of its wide application cability and low ...
CS335 Sample Questions for Exam #2
CS335 Sample Questions for Exam #2

... CS335: What does the fork() system call do? When would we want to use it? Answer: The fork() system call, which is supported under Unix but not Windows, creates a child process that is identical to the parent process in every respect with the exception of the return status from the fork call itself. ...
Part I: Introduction
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...  Soft real-time guarantees  “SPEED aims at providing a uniform packet delivery speed across the sensor network, so that the end-to-end delay of a packet is proportional to the distance between the source and the destination. With this service, real-time applications can estimate end-to-end delay b ...
Chapter1 - Computer Science
Chapter1 - Computer Science

...  = L/R, significant for low-speed links  dprop = propagation delay  a few microsecs to hundreds of msecs ...
Network Protocols Designed for Optimizability Jennifer Rexford Computer Science Department Princeton University
Network Protocols Designed for Optimizability Jennifer Rexford Computer Science Department Princeton University

... point based on a weighted sum of the link weights and a constant term. The ability to tune these extra parameters enables the application of conventional integerprogramming techniques for setting the parameters that control the selection of egress points [13]. Automatic adaptation or negotiation bas ...
Chapter 2 Protocols and Architecture
Chapter 2 Protocols and Architecture

... • Each layer relies on the next lower layer to perform more primitive functions — such as application layer relies on transport layer to send the data and commands.. ...
4th Edition: Chapter 1
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... network of cable, fiber attaches homes to ISP router  homes share access network to cable headend  unlike DSL, which has dedicated access to central office Introduction 1-15 ...
Management Information Systems
Management Information Systems

... You browse the vast resources of the Internet through the World Wide Web (or “the Web”). The Web is a vast collection of interconnected pages of information that are stored on computers connected to the Internet. It is a system with universally accepted standards for storing, retrieving, formatting, ...
1 - Ohio State Computer Science and Engineering
1 - Ohio State Computer Science and Engineering

... differentiated distribution of traffic throughout the network. An important result of this process is the avoidance of congestion on any one path. It is important to note that traffic engineering does not necessarily select the shortest path between two devices. It is possible that, for two packet d ...
SCORE: A Scalable Architecture for Implementing Resource
SCORE: A Scalable Architecture for Implementing Resource

... Domain Name Resolution: looking up a logical name and finding a physical IP address There is a hierarchy of domain name servers Each client system uses one domain name server which in turn queries up and down the hierarchy to find the address If your server does not know the address, it goes up the ...
9-0 Internet Protocol Attacks and some Defenses
9-0 Internet Protocol Attacks and some Defenses

... • Responder’s state (IP addresses and ports of the connection) is stored in a cookie and sent to initiator • After initiator responds, cookie is regenerated and compared with the cookie returned by the initiator slide 15 ...
CEN 4007C Computer Networks Fundamentals Instructor
CEN 4007C Computer Networks Fundamentals Instructor

... 14. (2 points) When a host joins a multicast group, must it change its IP address to that of the multicast group it is joining? No. A host can join multiple multicast groups at once, and still have its own IP address used for unicast. 15. (5 points) What is the difference between a group-shared tree ...
Week 6
Week 6

... connection is one that exists only in the software, while a physical connection is one that exists in the hardware • Note that in a network architecture, only the lowest layer contains the physical connection, while are higher layers contain logical connections ...
Snort Intrusion Detection
Snort Intrusion Detection

... Content Content offset Content depth Session recording ICMP type ICMP code Alternate log files ...
< 1 ... 359 360 361 362 363 364 365 366 367 ... 474 >

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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