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Overview and History
Overview and History

... graphical Web browsers that popularized the WWW for the general public (Erwise was the first one, ViolaWWW the second)  the intuitive, clickable interface helped make hypertext accessible to the masses  made the integration of multimedia (images, video, sound, …) much easier  Andreessen left NCSA ...
Week_Six_Net_Design
Week_Six_Net_Design

... in the coaxial cable is used to upstream signals from the modem to the Cable Modem Termination System (CMTS). The output from the CMTS is handed to either the WAN or the PSTN. A different channel is used for the downstream signals from these Internet Service Providers to the CMTS to the modem. The C ...
PDF - This Chapter
PDF - This Chapter

... high-performance, highly resilient Layer 3 IP backbone switching. CEF optimizes network performance and scalability for networks with large and dynamic traffic patterns, such as the Internet, on networks characterized by intensive Web-based applications or interactive sessions. ...
Accessing Wireless Networks Safely Brochure
Accessing Wireless Networks Safely Brochure

... sniffing your traffic and forces anyone attempting to access your wireless network to enter in a passcode. Without the right passcode, they can’t “piggyback” on your network. ■■ Change the default SSID and administra­ tive password. The SSID (Service Set Identifier) is essentially the “name” of your ...
TCP/IP: An overview
TCP/IP: An overview

... • Interworking between networks (de-facto standard) • All networks need to used TCP/IP suite when communicating with each other. • Within them- network can use any protocol of thier choice. They need to convert between TCP/IP and protocol being used. TCPTransmission control protocol. IPInternet p ...
EL736 Communications Networks II: Design and Algorithms
EL736 Communications Networks II: Design and Algorithms

... next hop ...
CSCE 790: Computer Network Security
CSCE 790: Computer Network Security

... Mail exchange is performed by a message transfer agent (MTA), for example Sendmail Users don’t interact with MTA but can choose their user agent ...
Logical Addressing
Logical Addressing

... divide and allocate those addresses however it sees fit. • The network address must point to the network’s router, which is responsible for forwarding packets out to the appropriate machines on its network. • Some organizations may choose to subnet their network. They divide their address block into ...
IST 220-001: Networking and Telecommunications
IST 220-001: Networking and Telecommunications

... RosettaNet – XML based ...
Computer networks and data communication
Computer networks and data communication

... minicomputer systems, many mainframe and supercomputing systems and some microcomputer and PC systems ...
Network Security - Chair of Network Architectures and Services
Network Security - Chair of Network Architectures and Services

... Specifying packet filtering rules:  As a packet filter protects one part of a network from another one, there is an implicit notion of the direction of traffic flow: • Inbound: The traffic is coming from an interface which is outside the protected network and its destination can be reached on an in ...
Title
Title

... (BTW, How long do we talk about introducing IPv6???) ...
About Border Bank: Located in Baltimore Washington Metropolitan
About Border Bank: Located in Baltimore Washington Metropolitan

... from several applications to be transmitted onto a single physical link. Virtual circuits are established, maintained, and terminated by the transport layer. Error checking involves creating various mechanisms for detecting transmission errors, while error recovery involves taking an action, such as ...
ppt
ppt

...  “I have a question”  introductions … specific msgs sent … specific actions taken when msgs received, or other events ...
Yee-Ting Li
Yee-Ting Li

... • Defines information flow to diagnose networks and hosts ...
Week 3 Teacher Presentation File
Week 3 Teacher Presentation File

...  MOST: Successfully explain how data is transferred across the internet/networks  SOME: Successfully explain using technical terms how data is transferred and describe some of the problems that may arise during data transfer ...
Mobile Communications
Mobile Communications

... – which prematurely send spoofing acknowledgments upon receiving packets – The GSs at split points are also responsible for retransmitting any missing data  TCP splitting – Instead of spoofing, the connection is fully split – A proprietary transport protocol can be used in a satellite network witho ...
D1S1_TSV404_Course_Intro_2011_v1
D1S1_TSV404_Course_Intro_2011_v1

... ■ Accountability is important from the system owner, to OIS, to the vendor implementing the controls ■ Standard reporting template would be useful ■ Application security tools are not generally available (code analyzer) ■ Databases behind firewalls are protected from external threats but still vulne ...
Figure 9.1: Communication at the data
Figure 9.1: Communication at the data

... the medium is used. We can have a data-link layer that uses the whole capacity of the medium; we can also have a data-link layer that uses only part of the capacity of the link. In other words, we can have a point-to-point link or a broadcast link. ...
UDP
UDP

... TCP  Transport Control Protocol  Flow control and Responds to congestion  Reliable In-order delivery  “Nice” Protocol ...
Q and A slides
Q and A slides

... drive) a part of universal service? A: That is not what the author means. He means all computers on the Internet can talk to each other. That does not mean they have the authorization to access services within companies’/schools’ networks. ...
Presentation title
Presentation title

... communications among emergency response teams when terrestrial infrastructure is damaged or lacking. They are also instrumental for risk/ disaster management (e.g. seismic/weather data collection and distribution). Our networks can be deployed at short notice and at a low cost. ...
Overview and History - Georgia State University
Overview and History - Georgia State University

... graphical Web browsers that popularized the WWW for the general public (Erwise was the first one, ViolaWWW the second)  the intuitive, clickable interface helped make hypertext accessible to the masses  made the integration of multimedia (images, video, sound, …) much easier  Andreessen left NCSA ...
Packet Marking Schemes
Packet Marking Schemes

... It proposes a scheme for detecting and preventing the most harmful and difficult to detect DoS Attacks those that use IP address spoofing to disguise the attack flow. The scheme is based on a firewall that can distinguish the attack packets(containing spoofed source addresses) from the packets sent ...
08-Application File
08-Application File

... an acknowledgement before sending any more data • It does not require a reliable transport protocol and runs over UDP ...
< 1 ... 309 310 311 312 313 314 315 316 317 ... 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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