Networking Market Primer
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Strategic Use of the Internet and E-Commerce: Cisco Systems
Journal of Strategic Information Systems 11 (2002) 5±29 www.elsevier.com/locate/jsis Strategic use of the Internet and e-commerce: Cisco Systems Kenneth L. Kraemer*, Jason Dedrick Graduate School of Management and Center for Research on Information Technology and Organizations, University of California, Irvine, 3200 Berkeley Place, Irvine, CA 92697-4650, USA Accepted 3October 2001 Abstract Information systems are strategic to the extent that they support a ®rm's business strategy. Cisco Systems has used the Internet and its own information systems to support its strategy in several ways: (1) to create a business ecology around its technology standards; (2) to coordinate a virtual organiza- tion that allows it to concentrate on product innovation while outsourcing other functions; (3) to showcase its own use of the Internet as a marketing tool. Cisco's strategy and execution enabled it to dominate key networking standards and sustain high growth rates throughout the 1990s. In late 2000, however, Cisco's market collapsed and the company was left with billions of dollars in unsold inventory, calling into question the ability of its information systems to help it anticipate and respond effectively to a decline in demand. q 2002 Elsevier Science B.V. All rights reserved. Keywords: Internet; e-commerce; Cisco Systems; Virtual Organization; Business Ecology 1. Introduction Information systems are strategic to the extent that they are used to support or enable different elements of a ®rm's business strategy (Porter and Millar, 1985). Cisco Systems, the world's largest networking equipment company, has used the Internet, electronic commerce (e-commerce), and information systems as part of its broad strategy of estab- lishing a dominant technology standard in the Internet era. -
Extreme Networks EXOS V12.3.6.2 EAL3+ ST
Extreme Networks, Inc. ExtremeXOS Network Operating System v12.3.6.2 Security Target Evaluation Assurance Level: EAL3+ Document Version: 0.9 Prepared for: Prepared by: Extreme Networks, Inc. Corsec Security, Inc. 3585 Monroe Street 13135 Lee Jackson Memorial Hwy., Suite 220 Santa Clara, CA 95051 Fairfax, VA 22033 Phone: +1 408 579 2800 Phone: +1 703 267 6050 http://www.extremenetworks.com http://www.corsec.c om Security Target , Version 0.9 March 12, 2012 Table of Contents 1 INTRODUCTION ................................................................................................................... 4 1.1 PURPOSE ................................................................................................................................................................ 4 1.2 SECURITY TARGET AND TOE REFERENCES ...................................................................................................... 4 1.3 TOE OVERVIEW ................................................................................................................................................... 5 1.3.1 TOE Environment ................................................................................................................................................... 5 1.4 TOE DESCRIPTION .............................................................................................................................................. 6 1.4.1 Architecture ............................................................................................................................................................. -
Networking Hardware: Absolute Beginner's Guide T Networking, 3Rd Edition Page 1 of 15
Chapter 3: Networking Hardware: Absolute Beginner's Guide t Networking, 3rd Edition Page 1 of 15 Chapter 3: Networking Hardware In this chapter z Working with network interface cards z Selecting and installing a NIC z Using hubs z Working with PC motherboards z Understanding processors and PC RAM z Working with hard drives z Differentiating server and client hardware Our Age of Anxiety is, in great part, the result of trying to do today’s jobs with yesterday’s tools. –Marshall McLuhan Now that we’ve discussed the different kinds of networks and looked at network topologies, we should spend some time discussing the hardware involved in networking. This chapter will concentrate on the connectivity devices that define the network topology—the most important being the network interface card. We will also take a look at hubs, routers, and switches. Another important aspect of building your network is selecting the hardware for your client PCs and your network servers. There are many good primers on computer hardware—for example, the Absolute Beginner’s Guide to PC Upgrades, published by Que. Also, numerous advanced books, such as Upgrading and Repairing PCs (by Scott Mueller, also from Que), are available, so we won't cover PC hardware in depth in this chapter. We will take a look at motherboards, RAM, and hard drives because of the impact these components have on server performance. We will also explore some of the issues related to buying client and server hardware. Let's start our discussion with the network interface card. We can then look at network connectivity devices and finish up with some information on PC hardware. -
Network Devices Configuration Guide for Packetfence Version 6.5.0 Network Devices Configuration Guide by Inverse Inc
Network Devices Configuration Guide for PacketFence version 6.5.0 Network Devices Configuration Guide by Inverse Inc. Version 6.5.0 - Jan 2017 Copyright © 2017 Inverse inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License". The fonts used in this guide are licensed under the SIL Open Font License, Version 1.1. This license is available with a FAQ at: http:// scripts.sil.org/OFL Copyright © Łukasz Dziedzic, http://www.latofonts.com, with Reserved Font Name: "Lato". Copyright © Raph Levien, http://levien.com/, with Reserved Font Name: "Inconsolata". Table of Contents About this Guide ............................................................................................................... 1 Other sources of information ..................................................................................... 1 Note on Inline enforcement support ................................................................................... 2 List of supported Network Devices ..................................................................................... 3 Switch configuration .......................................................................................................... 4 Assumptions ............................................................................................................ -
Computer Networking in Nuclear Medicine
CONTINUING EDUCATION Computer Networking In Nuclear Medicine Michael K. O'Connor Department of Radiology, The Mayo Clinic, Rochester, Minnesota to the possibility of not only connecting computer systems Objective: The purpose of this article is to provide a com from different vendors, but also connecting these systems to prehensive description of computer networks and how they a standard PC, Macintosh and other workstations in a de can improve the efficiency of a nuclear medicine department. partment (I). It should also be possible to utilize many other Methods: This paper discusses various types of networks, network resources such as printers and plotters with the defines specific network terminology and discusses the im nuclear medicine computer systems. This article reviews the plementation of a computer network in a nuclear medicine technology of computer networking and describes the ad department. vantages and disadvantages of such a network currently in Results: A computer network can serve as a vital component of a nuclear medicine department, reducing the time ex use at Mayo Clinic. pended on menial tasks while allowing retrieval and transfer WHAT IS A NETWORK? ral of information. Conclusions: A computer network can revolutionize a stan A network is a way of connecting several computers to dard nuclear medicine department. However, the complexity gether so that they all have access to files, programs, printers and size of an individual department will determine if net and other services (collectively called resources). In com working will be cost-effective. puter jargon, such a collection of computers all located Key Words: Computer network, LAN, WAN, Ethernet, within a few thousand feet of each other is called a local area ARCnet, Token-Ring. -
Glossaire Des Protocoles Réseau
Glossaire des protocoles réseau - EDITION LIVRES POUR TOUS - http://www.livrespourtous.com/ Mai 2009 A ALOHAnet ALOHAnet, également connu sous le nom ALOHA, est le premier réseau de transmission de données faisant appel à un média unique. Il a été développé par l'université d'Hawaii. Il a été mis en service en 1970 pour permettre les transmissions de données par radio entre les îles. Bien que ce réseau ne soit plus utilisé, ses concepts ont été repris par l'Ethernet. Histoire C'est Norman Abramson qui est à l'origine du projet. L'un des buts était de créer un réseau à faible coût d'exploitation pour permettre la réservation des chambres d'hôtels dispersés dans l'archipel d'Hawaï. Pour pallier l'absence de lignes de transmissions, l'idée fut d'utiliser les ondes radiofréquences. Au lieu d'attribuer une fréquence à chaque transmission comme on le faisait avec les technologies de l'époque, tout le monde utiliserait la même fréquence. Un seul support (l'éther) et une seule fréquence allaient donner des collisions entre paquets de données. Le but était de mettre au point des protocoles permettant de résoudre les collisions qui se comportent comme des perturbations analogues à des parasites. Les techniques de réémission permettent ainsi d'obtenir un réseau fiable sur un support qui ne l'est pas. APIPA APIPA (Automatic Private Internet Protocol Addressing) ou IPv4LL est un processus qui permet à un système d'exploitation de s'attribuer automatiquement une adresse IP, lorsque le serveur DHCP est hors service. APIPA utilise la plage d'adresses IP 169.254.0.0/16 (qu'on peut également noter 169.254.0.0/255.255.0.0), c'est-à-dire la plage dont les adresses vont de 169.254.0.0 à 169.254.255.255. -
An Extensible System-On-Chip Internet Firewall
An Extensible System-On-Chip Internet Firewall ----- ----- ----- ----- ----- ----- ABSTRACT Internet Packets A single-chip, firewall has been implemented that performs packet filtering, content scanning, and per-flow queuing of Internet Fiber packets at Gigabit/second rates. All of the packet processing Ethernet Backbone Switch operations are performed using reconfigurable hardware within a Switch single Xilinx Virtex XCV2000E Field Programmable Gate Array (FPGA). The SOC firewall processes headers of Internet packets Firewall in hardware with layered protocol wrappers. The firewall filters packets using rules stored in Content Addressable Memories PC 1 (CAMs). The firewall scans payloads of packets for keywords PC 2 using a hardware-based regular expression matching circuit. Lastly, the SOC firewall integrates a per-flow queuing module to Internal Hosts Internet mitigate the effect of Denial of Service attacks. Additional features can be added to the firewall by dynamic reconfiguration of FPGA hardware. Figure 1: Internet Firewall Configuration network, individual subnets can be isolated from each other and Categories and Subject Descriptors be protected from other hosts on the Internet. I.5.3 [Pattern Recognition]: Design Methodology; B.4.1 [Data Communications]: Input/Output Devices; C.2.1 [Computer- Recently, new types of firewalls have been introduced with an Communication Networks]: Network Architecture and Design increasing set of features. While some types of attacks have been thwarted by dropping packets based on the value of packet headers, new types of firewalls must scan the bytes in the payload General Terms of the packets as well. Further, new types of firewalls need to Design, Experimentation, Network Security defend internal hosts from Denial of Service (DoS) attacks, which occur when remote machines flood traffic to a victim host at high Keywords rates [1]. -
Cisco Systems (A): Evolution to E-Business
Case #1-0001 Cisco Systems (A): Evolution to E-Business "We view the Internet as a prototype of how organizations eventually will shape themselves in a truly global economy. It is a self ruling entity." —John Morgridge, Annual Report, 1993 Cisco Systems, says president and CEO John Chambers, is “an end-to-end networking company.” Its products and services enable the construction of corporate information superhighways, a driving concern of today’s CEOs, seeking to become “e-business” leaders in their industries. Defining “e-business” can prove more difficult than embracing it, however. In executive programs at the Tuck School, Professor Phil Anderson frequently asks participants, “How will you know when you have seen the first e-business within your industry?” Typically, there is little consensus. Is it mass customization? Streamlined production processes? One- to-one marketing? Cisco’s Internet Business Systems Group (IBSG), an internal consulting group, advises senior executives on information technology investment strategies. The group is closer to major corporate buying decisions than anyone at Cisco. As advocates for Cisco’s equipment, group members’ main struggle is identifying the benefits of becoming an e-business, which are wide, varied, and difficult to quantify. Additionally, the initial infrastructure investment is large enough to prompt many CEOs to wonder whether it’s really worthwhile to become an e-business. Trying to build a business case (calculate an ROI) for making a major IT investment can be an exercise in frustration. Says Sanjeev Agrawal, a director within the IBSG, “Can you show me the ROI of going to sixth grade? The amount of time it is going to take to try to go through the logic of that is not worth it.” The IBSG hopes that potential customers will look to Cisco as an example of how a company can make the most of information technology. -
Sintesi Catalogo Competenze 2
Internet of Things Competenze Campi di applicazione • Progettazione e sviluppo di firmware su micro • Monitoraggio ambientale meteorologico di para- controllori a basso e bassissimo consumo quali ad metri climatici e parametri della qualità dell’aria, esempio Arduino, Microchip, NXP, Texas Instru- anche in mobilità ments e Freescale • Monitoraggio ambientale distribuito per l’agricol- • Sviluppo su PC embedded basati su processori tura di precisione ARM e sistema operativo Linux quali ad esempio • Monitoraggio della qualità dell’acqua e dei parame- Portux, Odroid, RaspberryPI ed Nvidia Jetson tri di rischio ambientale (alluvioni, frane, ecc.) • Progettazione e sviluppo di Wired e Wireless Sen- • Monitoraggio di ambienti indoor (scuole, bibliote- sor Networks basate su standard quali ZigBee, che, uffici pubblici, ecc) SimpliciTI, 6LoWPAN, 802.15.4 e Modbus • Smart building: efficienza energetica, comfort am- • Progettazione e sviluppo di sistemi ad alimentazio- bientale e sicurezza ne autonoma e soluzioni di Energy harvesting • Utilizzo di piattaforme microUAV per misure distri- • Ottimizzazione di software e protocolli wireless buite, per applicazioni di fotogrammetria, teleme- per l’uso efficiente dell’energia all’interno di nodi tria e cartografia, per sistemi di navigazione auto- ad alimentazione autonoma matica basata su sensoristica e image processing, • Design e prototipazione (con strumenti CAD, pianificazione e gestione delle missioni stampante 3D, ecc) di circuiti elettronici per l’inte- • Smart Grid locale per l’ottimizzazione -
Ch05-Hardware.Pdf
5 Networking Hardware In the last couple of years, an unprecedented surge in interest in wireless networking hardware has brought a huge variety of inexpensive equipment to the market. So much variety, in fact, that it would be impossible to catalog every available component. In this chapter, well look at the sort of features and attributes that are desirable in a wireless component, and see several examples of commercial and DIY gear that has worked well in the past. Wired wireless With a name like “wireless”, you may be surprised at how many wires are involved in making a simple point-to-point link. A wireless node consists of many components, which must all be connected to each other with appropri- ate cabling. You obviously need at least one computer connected to an Eth- ernet network, and a wireless router or bridge attached to the same network. Radio components need to be connected to antennas, but along the way they may need to interface with an amplifier, lightning arrestor, or other de- vice. Many components require power, either via an AC mains line or using a DC transformer. All of these components use various sorts of connectors, not to mention a wide variety of cable types and thicknesses. Now multiply those cables and connectors by the number of nodes you will bring online, and you may well be wondering why this stuff is referred to as “wireless”. The diagram on the next page will give you some idea of the ca- bling required for a typical point-to-point link. -
Network Devices Configuration Guide
Network Devices Configuration Guide PacketFence v11.0.0 Version 11.0.0 - September 2021 Table of Contents 1. About this Guide . 2 1.1. Other sources of information . 2 2. Note on Inline enforcement support. 3 3. Note on RADIUS accounting . 4 4. List of supported Network Devices. 5 5. Switch configuration . 6 5.1. Assumptions . 6 5.2. 3COM . 6 5.3. Alcatel . 12 5.4. AlliedTelesis . 16 5.5. Amer . 21 5.6. Aruba. 22 5.7. Avaya. 24 5.8. Brocade. 25 5.9. Cisco . 28 5.10. Cisco Small Business (SMB) . 61 5.11. D-Link. 63 5.12. Dell . 65 5.13. Edge core . 70 5.14. Enterasys . 71 5.15. Extreme Networks. 74 5.16. Foundry . 78 5.17. H3C . 80 5.18. HP . 83 5.19. HP ProCurve . 84 5.20. Huawei . 94 5.21. IBM . 97 5.22. Intel. 98 5.23. Juniper . 98 5.24. LG-Ericsson . 104 5.25. Linksys . 105 5.26. Netgear . 106 5.27. Nortel . 108 5.28. Pica8. 110 5.29. SMC . 111 5.30. Ubiquiti. 112 6. Wireless Controllers and Access Point Configuration . 116 6.1. Assumptions. 116 6.2. Unsupported Equipment . 116 6.3. Aerohive Networks . 117 6.4. Anyfi Networks . 135 6.5. Avaya . 138 6.6. Aruba . 138 6.7. Belair Networks (now Ericsson) . 158 6.8. Bluesocket . 158 6.9. Brocade . 159 6.10. Cambium . 159 6.11. Cisco. 163 6.12. CoovaChilli. 204 6.13. D-Link. 206 6.14. Extricom . 206 6.15. Fortinet FortiGate . 207 6.16. Hostapd . -
Red Hat Openstack Platform 12 Networking Guide
Red Hat OpenStack Platform 12 Networking Guide An Advanced Guide to OpenStack Networking Last Updated: 2019-12-04 Red Hat OpenStack Platform 12 Networking Guide An Advanced Guide to OpenStack Networking OpenStack Team [email protected] Legal Notice Copyright © 2019 Red Hat, Inc. The text of and illustrations in this document are licensed by Red Hat under a Creative Commons Attribution–Share Alike 3.0 Unported license ("CC-BY-SA"). An explanation of CC-BY-SA is available at http://creativecommons.org/licenses/by-sa/3.0/ . In accordance with CC-BY-SA, if you distribute this document or an adaptation of it, you must provide the URL for the original version. Red Hat, as the licensor of this document, waives the right to enforce, and agrees not to assert, Section 4d of CC-BY-SA to the fullest extent permitted by applicable law. Red Hat, Red Hat Enterprise Linux, the Shadowman logo, the Red Hat logo, JBoss, OpenShift, Fedora, the Infinity logo, and RHCE are trademarks of Red Hat, Inc., registered in the United States and other countries. Linux ® is the registered trademark of Linus Torvalds in the United States and other countries. Java ® is a registered trademark of Oracle and/or its affiliates. XFS ® is a trademark of Silicon Graphics International Corp. or its subsidiaries in the United States and/or other countries. MySQL ® is a registered trademark of MySQL AB in the United States, the European Union and other countries. Node.js ® is an official trademark of Joyent. Red Hat is not formally related to or endorsed by the official Joyent Node.js open source or commercial project.