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presentation source
presentation source

... mode: set up secure connection between two end hosts  Protected even on internal networks  Must install IPsec software on stations, but default in current OSs (Windows, Linux, UNIX). ...
CPIT 201 6
CPIT 201 6

... CPIT 201 Introduction to Computing ...
Internet and LAN Technology
Internet and LAN Technology

... Analog and Digital Signals Bandwidth Communications Protocols ...
Networking and Internetworking
Networking and Internetworking

... – In interactive application, receiver inform sender when timeout or the buffer reaches the MTU limit – Retransmission: retransmit the segment when no acknowledgement within a specified timeout ...
slides 2
slides 2

... • Point-to-point network: a network in which every physical wire is connected to only two computers • Switch: a bridge that transforms a shared-bus configuration into a point-to-point network. • Router: a device that acts as a junction between two networks to transfer data packets among them. ...
ppt
ppt

... Making fragments be datagrams provides:  Tolerance of reordering and duplication  Ability to fragment fragments Reassembly done at the endpoint  Puts pressure on the receiver, not network interior Consequences of fragmentation:  Loss of any fragments causes loss of entire packet  Need to time-o ...
UNIX for Programmers and Users
UNIX for Programmers and Users

... packet switching: messages are split into small packets, each of which is routed independently (switched) through the network. ...
Chapter 13 Congestion in Data Networks
Chapter 13 Congestion in Data Networks

... • If node becomes congested it can slow down or halt flow of packets from other nodes • May mean that other nodes have to apply control on incoming packet rates • Propagates back to source • Can restrict to logical connections generating most traffic • Used in connection oriented networks that allow ...
Performance Analysis of Back Propagation Neural Network for
Performance Analysis of Back Propagation Neural Network for

... The demand for Internet Traffic Classification that optimizes network performance by solving difficult network management problems for Internet Service Providers (ISPs) and provides quality-of-service (QoS) guarantees has increased substantially in recent years, in part, due to the phenomenal growth ...
Lambda Station
Lambda Station

... continued use of high-volume path may be wasteful at that point. • Aggressive protocols for the wide area may have negative impacts on the last mile (site or site’s “uplink”) network. ...
Week_Four_Network_ppt
Week_Four_Network_ppt

... enters a router and switch interface, it’s source, and destination , IP address, source and destination TCP or UDP port numbers, packet and byte counts. The objective is to document the megabytes per second between pairs of autonomous systems, networks, hosts, and applications. Use the Network Traff ...
Plutarch
Plutarch

... Can be served from trusted repositories. IFs not carried inside packets. ...
SIMILARITIES TCP/IP and OSI
SIMILARITIES TCP/IP and OSI

... to communicate), middle layer (the decision about HOW the idea will be communicated), bottom layer(the creation of sound to communicate). The same concept of layers can be used to explain how networks distribute information from source to destination. Packets move from source to destination through ...
Document
Document

... These protocols are very rigidly defined, and for good reason. Network cards must know how to talk to other network cards in order to exchange information Operating systems must know how to talk to network cards in order to send and receive data on the network Application programs must know how to t ...
Lim-TMC09-slide
Lim-TMC09-slide

...  The AMM replaces2 the destination IP address of the IP or IPSec packet by the Care-of-Address of the MN based on its entry in the M-Table  Finally, for IPSec packet, it pastes the MN’s SID into the reserved bits of the AH  This packet is then directly routed to the MN. At the network layer of MN ...
Lecture 3: Introduction to net
Lecture 3: Introduction to net

... A telecommunications network architecture is a set of design principles used as a basis for the designing and implementation of a network It simply describes ‘what’ will be built - it ...
Acronym Chart and Networking Vocabulary Monroe County Library
Acronym Chart and Networking Vocabulary Monroe County Library

... (Defined by IEEE 802.3) simultaneously broadcasts data packets to all network devicesrefers to a family of LAN technologies that offer various data transmission rates over fiber-optic and twisted-pair cables arranged in a star or bus topology ...
Pequeno dicionário de siglas
Pequeno dicionário de siglas

... AP - Access Point; an abbreviated term for Integrated Access Point. The BWS Base Station. Provides connections to the PDN and onwards to the WAN. ATM - Asynchronous Transfer Mode. A multiplexed information transfer and switching method in which information is organized into fixed-length 53-octet cel ...
Basic LAN Devices Repeaters There are many types of media, and
Basic LAN Devices Repeaters There are many types of media, and

... of network addresses (Classes) as opposed to individual Layer 2 MAC addresses. Routers can also connect different Layer 2 technologies, such as Ethernet, Token-ring, and FDDI. However, because of their ability to route packets based on Layer 3 information, routers have become the backbone of the Int ...
anti bullying policy - Boskenwyn Primary School
anti bullying policy - Boskenwyn Primary School

... Pupils will not be allowed access to unsupervised and/or unauthorised chat rooms and should not attempt to gain access to them. Staff or students finding unsuitable websites through the school network should report the web address to Lynne Winter. Do not introduce floppy disks, CDs, DVDs or ‘pen dri ...
Presentation3
Presentation3

... A protocol for converting between higher layer protocol data units (PDU’s), such as TCP packets, IP packets, or JPEG images, and ATM cells for actual transmission Defines procedures for segmentation and ...
Assignment 3 Network Components Johnson
Assignment 3 Network Components Johnson

... that allows wireless devices, such as an iPad or iPod to connect to a wired network. In home use, the wireless router is also the wireless access point. A public application of the WAP is a “hotspot”, which allows wireless clients to connect to the network. A wireless AP or wireless router can cost ...
Introduction
Introduction

... (1) Read the Manual (2) Reboot the computer (3) Remove all the hardware and software except ours and try again (4) Download Newest driver (5) Reformat the harddisk Networks and Devices have to be foolproof in operation (no big manuals) Low Price (will pay a little extra at most) ...
Programming Languages
Programming Languages

... • Defining “policy” is complicated – All rules in all switches – Packet-in handlers – Polling of counters ...
1-up
1-up

... TCP segment size is not fixed. It is discovered during connection setup. – Set don’t fragment bit in IP header. If packet cannot be transmitted, router sends an ICMP error message ...
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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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