...LAB 1 PART - A RISK – THREAT - VULNERABILITY | PRIMARY DOMAIN IMPACTED | Unauthorized access from public Internet | LAN –WAN | User destroys data in application and deletes all files | USER | Hacker penetrates your IT infrastructure and gains access to you internal network | SYSTEM APPLICATION | Intra-office employee romance gone bad | USER | Fire destroys primary data center | LAN | Communication circuits outages | WAN | Workstation OS has a known software vulnerability | LAN – WAN | Unauthorized access to organization owned | USER | Workstations | USER | Loss of production data | SYSTEM APPLICATION | Denial of Service attack on organization e-mail Server | LAN – WAN | Remote communications from home office | REMOTE ACCESS | LAN server OS has a known software vulnerability | LAN | User downloads an unknown e-mail attachment | USER | Workstation browser has software vulnerability | WORKSTATION | Service provider has a major network outage | WAN | Weak ingress/ egress traffic filtering degrades Performance | LAN – WAN | User inserts CDs and USB hard drives with personal photos, music, and videos on organization owned computers | USER | VPN tunneling between remote computer and ingress/egress router | REMOTE ACCESS | WLAN access points are needed for LAN connectivity within a warehouse | LAN – WAN | Need to prevent rogue users from unauthorized WLAN access | WAN | LAB ASSESSMENT QUESTIONS 1. Unauthorized access to organization...
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...Solution | Healthcare Network Allied Telesis Healthcare Network Construction Guidebook Contents Healthcare Network Solution | Introduction Outline of a Healthcare Network Importance of the network Main requirements in designing a healthcare network Non-stop Network Network bandwidth and QoS (Quality of Service) Data capacity Network bandwidth and cost of LAN devices QoS (Quality of Service) Redundancy and proactive measures to overcome network failures Core switch redundancy Comparison of redundancy of communication Loop protection Secure and Reliable Network Security Importance of security: both physical and human factors Threats to network security Network authentication External network (Internet) connection Inter-regional cooperative healthcare network Effective use of Wireless LAN Security in Wireless LAN Install and operation of Wireless LAN Ease of Operation Critical issues for network operation SNMP (Simple Network Management Protocol) Measures against system failures; device failures, incorrect wiring Use of SNMP IPv6 Network Configuration Example Network configuration for hospitals with fewer than 100 beds Network configuration for hospitals with more than 100 and fewer than 200 beds Network configuration for hospitals with more than 200 beds (i) Network configuration for hospitals with more than 200 beds (ii) 3 4 4 5 7 7 7 8 9 10 10 11 12 13 13 13 14 15 19 20 21 21 22 23 23 24 24 25 26 27 28 30 32 34 2 | Healthcare Network Solution Healthcare Network...
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...Fund Transfer (POS-EFT) system requires several components to function. List and discuss the function for these components. a) An Information System (IS) manager has two principle roles within an organization. He has to be able to manage the change processes that are inevitably initiated by the introduction of technology into his workplace, and he has to manage the operational aspects of business and organizational activities founded on computing and communication technology. Hence an IS manager is a leading figure in both organizational change and performance. From this definition, it is a natural deduction that for IS manager to work effectively, they must have or need to be: * Detailed knowledge of the organization’s mission and vision, its peculiar business strategies and implementation skills. With these understanding, the IS manager will then be able to design an information system which can help the organization to achieve its goal. * Skilled in inter-personal management. This consists of communication skills both written and oral, people oriented and also negotiation skill. Regardless of how an organization structures its information system department, system development is a team effort. So learning how to work and communicate effectively with other team members is important for any information system professionals. * Good self assessment skills and critical analyzing skills. The manager is a decision maker and such may act as a formal authority that...
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...spectrum technology based on radio waves to enable communication between two devices in a limited area. Wireless local area networks (WLANs) based on the Wi-Fi (wireless fidelity) standards are one of today's fastest growing technologies in businesses, schools, and homes, for good reasons. They provide mobile access to the Internet and to enterprise networks so users can remain connected away from their desks. These networks can be up and running quickly when there is no available wired Ethernet infrastructure. They are reported to reduce setting up costs by 15%. But, with these benefits come the security concerns. WLANs have very little security. An attacker can listen to you, take control of your laptops/desktops and forge him to be you. He can cancel your orders, make changes into your databases, or empty your credit cards. a. The 802.11 Wireless LAN Standard: In 1997, the IEEE ratified the 802.11 Wireless LAN standards, establishing a global standard for implementing and deploying Wireless LANS. The throughput for 802.11 is 2Mbps, which was well below the IEEE 802.3 Ethernet counterpart Late in 1999, the IEEE ratified the 802.11b standard extension, which raised the throughput to 11 Mbps, making this extension more comparable to the wired equivalent. The 802.11b also supports the 2 Mbps data rate and operates on the 2.4GHz band in radio frequency for high-speed data communications. As with any of the other 802 networking...
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...Kudler Fine Foods Network Victoria Thompson NTC/ 365 August 11, 2015 Craig Urizzola Data transmission and communication are essential in any networked environment. In order for two devices to communicate with one another they must speak the same language and follow the same rules. This language or set of rules is known as protocol. Protocols and standardization among devices allows for seamless, efficient, and productive communication as well as data transmission and file sharing. The future growth potential for Kudler Fine Foods has initiated a need for converting the current wired Ethernet LAN locations to wireless LANs. In order to do this new hardware, such as WLAN controllers and wireless access points, will be required. In addition to the protocols that the networks already use to communicate- several new protocols will be introduced. The lightweight access point protocol (LWAPP) is one example of a protocol that will be used in addition to the protocols associated with the 802.11n media controls used by the wide area network (WAN) and the IEEE 802.3u standards used by the 100 Base T Ethernet wired cable now in use (“What is Ethernet? Webopedia”, 2015). Converting to the wireless LAN environment will require a few changes in the overall architecture of the network; however, most of the hardware devices that are currently being used will not have to be replaced. As of now, the dedicated lines that connect the three locations are sufficient for the WAN; and...
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...Bachelor of Science in Electronics and Telecommunication Engineering and approved as to its style and contents. The presentation was held on 19th October 2009. Board of Examiners Mr. Golam Mowla Choudhury Professor and Head Department of Electronics and Telecommunication Engineering Daffodil International University ---------------------(Chairman) Dr. M. Lutfar Rahman Dean & Professor Faculty of Science and Information Technology Daffodil International University ---------------------(Member) A K M Fazlul Haque Assistant Professor Department of Electronics and Telecommunication Engineering Daffodil International University ---------------------(Internal) Dr. Subrata Kumer Aditya Professor Department of Applied Physics, Electronics and Communication Engineering University of Dhaka ---------------------(External) ii ABSTRACT Wireless Local Area Network (WLAN) applications are new, fast...
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...I. Your employer, XelPharm, is a large manufacturer and distributor of generic, over-the-counter healthcare products. Its main campus consists of three buildings within two blocks of each other. Each building houses approximately 200 employees, including those in the following departments: Administration, Accounting, Research, Legal, Quality Control, Order Fulfillment, and Production. In addition, XelPharm owns a large distribution warehouse approximately four miles away from the headquarters. Until now, its networks have relied entirely on wired connections. The company’s CIO (chief information officer) decided long ago that he would wait until wireless technology “settled down” before investing in it. 1. What can you tell him about the wireless standards that might convince him that now is the time to adopt wireless technology? Ans: Since 1997 after IEEE released its first wireless network standard, wireless network has evolved into several distinct standards. Most attracting thing about Wireless connection is the absence of wire. Addition to that, the newer technology of wireless network can provide maximum downlink throughput to120 Mbps and maximum uplink throughput to 60 Mbps (WiMax 2). This technology is being considered to be an alternative to DSL and T-carrier services for homes and businesses. It achieves much faster throughput than T-carriers at a lower cost for end users. This type of technology can transmit and receive signals up to 50 km, or approximately...
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...TERM PAPER Wireless LAN Security Enabling and Protecting the Enterprise INSIDE INSIDE ∆ Wireless LAN Technology ∆ ∆ ∆ Benefits of Wireless LANs Security Risks and Technical Challenges Recommendations WIRELESS LAN SECURITY Contents Executive Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Wireless LAN Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Benefits of Wireless LANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Simplified Implementation and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Extended Reach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Increased Worker Mobility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Reduced Total Cost of Ownership and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Security Risks and Technical Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 “Leaky” Buildings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Unapproved Deployments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Exposure of Wireless Devices . . . . . . . . . . . . . . . ....
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...Wireless LAN is a networking technology that allows the connection of computers without any wires and cables, mostly using radio and infrared frequency (RF) technology. It's called LAN because the range targets within an office, a building, a store, a small campus, or just a house. The description of a WLAN is a mobile data communication connectivity system installed and configured as an alternative in some cases for traditional LAN. The WLAN equipment is capable of receiving and sending data over an adequate range. In the United States, the WLAN business is increasing in areas like the airports, health-care, warehousing and manufactures. Several research companies are predicting a healthy increase in WLAN business market in the coming years. The WLAN provides advantages over traditional LAN technology such as buried cables in the ground, hidden cables behind walls, and long cable runs measured in feet or miles. Without restrictions, the new technology infrastructure can easily be installed and ready to be used. Current growth concerning network communication technology in the enterprise communication environment has resulted in widespread deployment of numerous products that cover only a small part of the total mobile and WLAN infrastructure required. The WLAN industry has experienced phenomenal increase over the past ten years. The U.S. wireless industry posted revenue of $40 billion in 1999, according to the Cellular Telecommunications Industry Association...
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...Wi-FiFrom Wikipedia, the free encyclopediaJump to: navigation, search For the radio station, see WIFI (AM). Wi-Fi logoWi-Fi ( /ˈwaɪfaɪ/, also spelled Wifi or WiFi) is a popular technology that allows an electronic device to exchange data wirelessly (using radio waves) over a computer network, including high-speed Internet connections. The Wi-Fi Alliance defines Wi-Fi as any "wireless local area network (WLAN) products that are based on the Institute of Electrical and Electronics Engineers' (IEEE) 802.11 standards".[1] However, since most modern WLANs are based on these standards, the term "Wi-Fi" is used in general English as a synonym for "WLAN". A device that can use Wi-Fi (such as a personal computer, video game console, smartphone, tablet, or digital audio player) can connect to a network resource such as the Internet via a wireless network access point. Such an access point (or hotspot) has a range of about 20 meters (65 feet) indoors and a greater range outdoors. Hotspot coverage can comprise an area as small as a single room with walls that block radio waves or as large as many square miles — this is achieved by using multiple overlapping access points. "Wi-Fi" is a trademark of the Wi-Fi Alliance and the brand name for products using the IEEE 802.11 family of standards. Only Wi-Fi products that complete Wi-Fi Alliance interoperability certification testing successfully may use the "Wi-Fi CERTIFIED" designation and trademark. Wi-Fi has had a checkered security...
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...between various equipment locations. Wireless telecommunications networks are generally implemented and administered using radio communication. This implementation takes place at the physical level (layer) of the OSI model network structure. Examples of wireless networks include cell phone networks, Wi-Fi local networks and terrestrial microwave networks. Wireless network made up of There are two kinds of wireless networks: * An ad-hoc, or peer-to-peer wireless network * Access point Ad-hoc or peer-to-peer wireless network It consists of a number of computers each equipped with a wireless networking interface card. Each computer can communicate directly with all of the other wireless enabled computers. They can share files and printers this way, but may not be able to access wired LAN resources, unless one of the computers acts as a bridge to the wired LAN using special software. (This is called "bridging") Each computer with a wireless interface can communicate directly with all of the others. Access point or base station A wireless network can also use an access point, or base station. In this type of network the access point acts like a hub, providing connectivity for the wireless computers. It can connect (or "bridge") the wireless LAN to a wired LAN, allowing wireless computer access to LAN resources, such as file servers or existing Internet Connectivity. There are two types of access points: * Hardware...
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...assist students in their network planning. This document includes information under the following main headings: Introduction to Networking Advantages of Networking Types of Networks Models of networking appropriate to students NCTE recommendation to students Some relevant terms. 1.1. Basic of Networking A computer network consists of a collection of computers, printers and other equipment that is connected together so that they can communicate with each other. Fig 1 gives an example of a network in a school comprising of a local area network or LAN connecting computers with each other, the internet, and various servers. 2 File and Print Server CD or Multimedia Servers Access to: Internet content & learning resources, Scoilnet etc Email communication Users computers Cache, Proxy, Filtering, Firewall Server Modem or Router School ‘Local Area Network’ (LAN) Other users, computers Fig 1: Representation of Network in a school. Broadly speaking, there are two types of network configuration, peer-to-peer networks and client/server networks. Peer-to-peer networks are more commonly implemented where less then ten computers are involved and where strict security is not necessary. All...
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...technological world, especially Internet. Internet has allowed users around the world to communicate with each other very quick and fast. And with the development of Wi-Fi, these communication methods have been even more available. But Wi-Fi also brings its disadvantages with it since potential hackers can access the network faster than wired networks. In this research paper, our team has put forward a goal to observe and find information about the communications ways through the internet and how to improve the security of a wireless network. During our research our team members carefully researched and practiced all those communication methods. Our goal was to evaluate the best ways of communication. Our team members have also learned the threats that could affect Wi-Fi. Our next goal was to prevent all of those threats, to find security measures and evaluate which security measure would work the best. In order to experiment the Wi-Fi and its security we have taken a hotel in Djizak City, Afrosiyob Hotel, which has been opened in July, 2012 and does not have Wi-Fi system. We will implement a Wi-Fi network and we will suggest security measures for the network and propose our plan to the owner, Mr. Jahon Isakov. Introduction Since the invention of Internet, it has had numerous uses, from data analysis to communication, from...
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...industry and demographic. Their business process is quite simple. They have a server at the Company Headquarters, where they store all of their proprietary data (including images, scripts, templates, etc). They utilize a Microsoft Visual Studio Team Foundation Service (TFS) server to manage their content and the progress of the project. “Team Foundation is a set of tools and technologies that enable a team to collaborate and coordinate their efforts on building a product or completing a project. Team Foundation enhances team communication, tracks work status, supports team roles, enacts the team process, and integrates team tools.” (Microsoft.com (2011) Team Foundation Overview) In addition to the Team Foundation, they also utilize Visual Studio to code, and build the websites. These resources are accesses through different methods. Those methods include WAN connection, VPN connection through a remote office, and through the corporate office via LAN. They also have other services such as Outlook Web Access for E-mail that is accessed via the methods mentioned above. They have also created security control measures that are published through the corporate security manual. Two Security Vulnerabilities Software Vulnerability The main vulnerability I see on the software side would be protecting their Server. Since Quality Web Design utilizes the access to their servers via remote connection and wireless access, these servers can become victims of Man-in-the-Middle...
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...Components • Component Name: Access point o Rationale for using component: Receive and transmit signal that can be picked up by any node that has the ability to receive wireless signals through a wireless network interface card. o Rough cost estimate: $100 • Component Name: Switches o Rationale for using component: Give the ability to expansion of a WLAN o Rough cost estimate: $250 • Component Name: Cables o Rationale for using component: The access point is connect to wired network with cables to give wireless access o Rough cost estimate:$10 IEEE Wireless Network Type Apex Designs has identified that an 802.11n LAN will be implemented. Access Point Management Apex Designs has decided that thin access points will be used to simplify the management of the wireless LAN. These access points allow the wireless network to be managed from one central location rather than to be configured separately for each access point. Location of Wireless Devices Network Performance Impediment Report (overview of floor plan and possible impediments) This floor doesn’t need a lot of attention. The microwave and the vending machines in one of the rooms could affect the network performance. WLAN operates by RF same as the microwave and the vending machines. This is a...
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