...Wireless Wide Area Networks: Trends and Issues Wireless Wide Area Networks: Trends and Issues Mobile computing devices are getting smaller and more powerful, while the amount of information is growing astronomically. As the demand for connecting these devices to content-rich networks rises, WWAN technology seems like the perfect answer. But today's wireless WANs have some limitations. This white paper discusses those limitations and how NetMotion™ overcomes them. · Specialized equipment and custom applications were needed for deployment over these proprietary wireless systems. · Often the wireless infrastructures themselves were difficult to deploy. · Only a small percentage of the working population was mobile, so corporations considered wireless data deployment a significant investment with little return. Why the resurgence of interest in wireless data networking technologies now? In the late twentieth century, a few interesting social and technological developments took place. In the late 1990's, businesses began seeing the economic benefit of having employees who work away from their campuses. These remote (and sometimes nomadic) workers needed access to everyday corporate information to do their jobs. Providing workers with remote connectivity became a growing challenge for the information staff. Handheld and pocket-sized computers became powerful enough to be useful. The convergence of Internet networking technologies made IP the de facto standard. New standards such...
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...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 Solution...
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...Computer hardware is no longer a major barrier to wide use of wireless information systems. Wireless technology is evolving and becoming the preferred choice for connecting hardware and transferring information. Employing a wireless system allows corporations, like cruise ships, to provide a wireless service to its passengers without comprising information security. Without wireless technology this service would be impossible. To set up a basic wireless network, you will need a network card/adapter, a wireless router, and access points. The network card is the most important hardware component of wireless networking. The wireless router and access points are used to increase performance, accommodate more computers, and increase the network’s range. Network adapters are used to interface a computer to a network. They can be found as a traditional PCI card, PC Card adapter, USB adapter, media adapter, or an integrated wireless adapter chip. A wireless router allows multiple devices to access one internet connection. Through radio frequencies, data is transferred between devices connected to the network. Access points serve as the central receiver and transmitter of these radio frequencies. Other factors to consider when setting up a wireless network are compatibility, expenses, limitations due to distance and building structure, and Wi-Fi network security. Wireless network technology, also referred to as WLANs, uses an industry standard known as IEEE 802.11 that...
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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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...10BaseT: networks (LANs) with twisted-pair cabling and a wiring hub. The weakening of a wireless signal that occurs as it passes through objects, especially those made of metal (walls, stairwells, filing cabinets) or containing large percentages Radio frequency (RF) energy is of water (fish tanks, stacks of Absorption (RF absorbed by material rather than paper, people, etc.). behavior) deflected or reflected. To avoid excessive absorption of the wireless signal, position the access point above any large objects in the area. An adjustment of the antennas may be necessary. An internetworking device that seamlessly connects wired and wireless networks. Access A device that provides wireless points combined with a Access Point (AP) clients with access to a wired distributed system support the network. creation of multiple radio cells that enable roaming throughout a facility. -- Default setting on Lexmark wireless network adapters. -- This will change to infrastructure during the configuration of the print server with an access point. -- Also known as peer-topeer, computer-to-printer, or computer-to-computer depending on the types of devices involved. Simple Definition Ad Hoc Mode A mode of operation for Wi-Fi networks in which devices communicate directly with each other. Term Simple Definition Advanced Definition -- A network composed solely of stations within mutual communication range of each other. Ad Hoc Network -- A direct 11Mbps peer-toA network in which...
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...9/13/2015 SEC-572-Network Security SYED MASTAN Professor Raef Yasin DeVry University Keller Graduate School of Management LAB-2 Assignment SOHO-NETWORK SET-UP SOHO WIRELESS NETWORK: The need and ability to work from home has increased dramatically in the past few years. With lower prices on high-speed Internet and networking equipment, many people are discovering that building and maintaining a small office/home office (SOHO) network isn’t as difficult as it used to be. The wireless or “WiFi” systems operate on a standard called 802.11 and therefore equipment from any vendor will normally work with a user’s device designed to communicate over a WiFi network. The SOHO set-up Includes: • It is a small accounting firm in a building...
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...Wireless Technologies and Networks in a Work Environment Edoardo Castillo BIS 221 February 5, 2015 Bill Fennell Wireless technologies and the use of networks have become a great part of our professional lives. We use networks to communicate and share ideas in a professional environment without having to be face-to-face with one another. Some of the advantages wireless technology has given us are mobility, flexibility, increased productivity, and reduced cost of manpower and material. These are just some of the advantages that wireless technology offers us, but we need to keep in mind that there are risks to this technology (Nascio.org, 2004). Although wireless technology has some significant benefits, it also has some disadvantages. Protecting confidential information within a company continues to be a concern for businesses all around the world. Another concern is the strength of a network and its ability to work at its full potential in broad range areas. Implementing a wireless technology like Wi-Fi will increase the productivity of any company or corporation. Wi-Fi will decrease the cost of materials and wires needed to link all of the workstations to a central network. Placing secure Wi-Fi points in and around offices for employees can significantly improve productivity within a period of work time. Yes, a Wireless Local Access Network gives you several advantages such as convenience, mobility, deployment, and expandability in a network. However just like wireless...
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...Updated Wireless At Reading Room Bookstore/ Café Prepared for: Mrs. Karen Dickens, Owner of Reading Room Bookstore/ Café Prepared by: Wendell Brown, Peter Bacon, and Alex McCurdy Owners of Keep Austin Wireless April 25, 2014 Table of Contents Executive Summary 2 Introduction 2 Methods 3 Which 802.11 specification is best for your specific needs? 3 Should we get a router that works at 2.4 GHz, 5 GHz, or both? 3 What security level is best for your business? 4 What speed router should be considered? 4 What else should our router(s) have for current or future considerations? 4 What would happen if something were to go down? 5 How many UPS-powered outlets do we need? 5 How much power do our devices require? 5 How long do we need to use the battery? 5 How many feet of Ethernet cabling do we need? 5 Results 7 Conclusions 8 Decision Matrix 10 Recommendation 11 Assumptions 13 Installation 15 Equipment Parts List 16 Works Cited 17 List of Illustrations Figure 1: Picture of Linksys EA6900 (Linksys Employee, 2014) 7 Figure 2: Picture of ASUS RT-AC66U (Endgadget Employee, 2014) 7 Figure 3: Picture of Trendnet TEW-812DRU (Softpedia Employee, 2014) 7 Figure 4: Decision Matrix 8 Figure 5: High Level Parts Diagram 10 Table 1: Detailed parts list (Bacon, 2014) 10 Executive Summary This report was developed to summarize the newer, better, and more secure wireless network...
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...Wireless Communications Paper Wireless communication involves the transmission of data from one point to another without the need to run cabling in-between. Although it seems relatively new to the end user today, it has surprisingly been around for longer than you may think dating back to the late 1800’s. The first wireless technology discovered was the Radio Frequency (RF signal). Thomas Edison and Nikola Tesla were two inventors that played a huge role in developing the RF technology we still use today. By conducting many experiments using wireless technology they together came up with the RF signal that was first implemented in WWII by the US Military. It wasn’t until the 1970s’ that the first ‘wireless network’ was developed called ALOHAnet. This new wireless network was made to communicate from island to island is Hawaii. Using LAN technologies and a 400 MHz frequency band ALOHAnet was the predecessor of many wireless technologies to come. Today we have many wireless technologies that are used for many different types of services. If you’ve used Bluetooth technology then you’ve used a Personal Area Network (PAN). A PAN network is intended for short ranges and typically controlled and used by a single person. If you’ve connected to the internet at work, a coffee shop, work, or at school then you’ve connected to part of a Wide Area Network (WAN) configured into a Local Area Network (LAN). Most people know a typical WAN by the name of WIFI, even though that’s just a business...
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...Unfortunately, the cables has not reached this area, and given the numerous obstacles to digging, it would be prohibitively expensive to install. The only choice left here is to use the wireless technology. But what form of wireless signal would we use? The wireless signal would have to go through walls (eliminating infrared), be able to traverse approximately 12kms (eliminate Bluetooth, Wireless Lans, Ultra-wideband, again infrared and ZigBee) and be able to carry a high-speed signal (again eliminate Bluetooth and ZigBee). for obvious reasons, microwave, satellite and WiMAX are reasonable solutions. The new distribution centre is located in an industrial area, industrial environments with heavy machinery produce electromagnetic radiation, and wireless transmission also can be disrupted by electromagnetic noise and interference from other transmisiions.Sunspots, although they do not happen often, can be disruptive to satellite transmissions. (Might eliminate satellite). It is worth noting that microwave transmission can be hampered by bad weather. Microwave will work only if the headquarters and the new distribution center are tall and no obstructions, such as other buildings are in the way (might eliminate microwave). In order for the company to establish a long-distance, high-throughput wireless connection, 802.16 (WiMAX) technology should be used. This technology which stands for Worldwide Interoperability for Microwave Access, is able to transmit and receive signals up to 30 miles...
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...Case Analysis 4: Google’s attempt to but into wireless via 700MHz Spectrum Auction TM583 12/09/2012 Why did Google make this move? What do they hope to accomplish? Google made this move because they wan to compete with the other companies and become innovated. Google has most been known for their website and maps and now, they want to be known for more. “Google interest in the spectrum came after AT&T and other larger broadband providers expressed interest in recent years in getting web-based businesses to pay more for their customers’ use of the broadband networks.”(http://www.cio.com/article/160601/Google_to_Bid_in_700MHz_Spectrum_Auction) Google wanted control of the Internet experience on the device that hosted it. If they got the wireless spectrum, they could control how much the consumer would decide to pay or not pay for their service. However, since they put a bid in for the wireless spectrum, they wanted to do the same thing on their network. The 700MHz spectrum will travel far making it perfect for the wireless industry. How does Google support for Open Access fit into Google’s plans? “Google has said it would bid on the 700MHz spectrum only if the FCC guarantees certain open-access principles; including open access for companies wanting to buy wireless capacity wholesale.” (http://news.cnet.com/Googles-battle-for-wireless-spectrum---page-2/2008-1039_3-6199374-2.html) Open Access for the 700MHz spectrum can be lay down “four freedom” 1.) Open...
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...Helen Ross, Network Technician Currently concerned with upgrading the schools printing scheme. They have over 50 printers and wants to consolidate them. The network also is experiencing latency due to collision and filled print queues. For this issue I would recommend the use of a Print Server, and RAID. The addition of a print server will allow the school to consolidate to using a smaller amount of printers. Utilizing a print server will allow a centralized location to manage all print jobs. Once the server receives the job, it will then forward the job to the corresponding printer. Helen also mentioned there was a significant amount of collisions being detected within the network. Each device will be mapped to an assigned printer within its quadrant. However, when its time to print instead of the message going directly to its assigned printer, the printer server will receive the request. Then it will make sure there aren’t any other request or jobs waiting before new job prints. Using a print server will greatly reduce the amount of congestion on the network and will also allow your organization to consolidate from 50 computers to just a few. John Fischer, HVAC Tech, Laptop is operating at 10mbps either hard-wired or wireless. John was advised that it is a network issue as he was able to rule out the network card when he contacted the HVAC Tech Support Team. In order for him to be able to monitor the HVAC equipment he will need to have a connection to the LAN with at...
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...Abstract:-The fourth generation of mobile networks will truly turn the current mobile phone networks, in to end to end IP based networks, couple this with the arrival of IPv6, every device in the world will have a unique IP address, which will allow full IP based communications from a mobile device, right to the core of the internet, and back out again. If 4G is implemented correctly, it will truly harmonize global roaming, super high speed connectivity, and transparent end user performance on every mobile communications device in the world. 4G is set to deliver 100mbps to a roaming mobile device globally, and up to 1gbps to a stationary device. With this in mind, it allows for video conferencing, streaming picture perfect video and much more. It won’t be just the phone networks that need to evolve, the increased traffic load on the internet as a whole (imagine having 1 billion 100mb nodes attached to a network over night) will need to expand, with faster backbones and oceanic links requiring major upgrade. 4G won’t happen overnight, it is estimated that it will be implemented by 2012, and if done correctly, should takeoff rather quickly. 4G networks i.e. Next Generation Networks (NGNs) are becoming fast and very cost-effective solutions for those wanting an IP built high-speed data capacities in the mobile network. Some possible standards for the 4G system are 802.20, Wi-MAX (802.16), HSDPA, TDD UMTS, UMTS and future versions of UMTS. The design is that 4G will be based on OFDM...
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...Classify Data for Access Control Requirements Lab Assessment Questions & Answers 1. What is the Data Classification Method used in the Military and Government Agencies that line up with the corporate data classification method defined earlier in this lab? Explain. Secret- This is the second-highest classification. Information is classified Secret when its release would cause "serious damage" to national security. Most information that is classified is held at the secret sensitivity. 2. Describe one way to help prevent unauthorized users from logging onto another person’s user account and accessing his/her data? By authorization, a person have to identify his/herself, the access control system verifies the person’s identity, the access control system must determine whether the person is authorized with a username and passwords 3. What permissions are necessary to allow an Active Directory Group called AD_Group to read and write files in a Sensitive directory such as C:\ERPdocuments\HRfiles? Read-Write permissions (Author) 4. How would you apply the permissions (ACLs) stated above (M,RX) to the AD_Group on C:\ERPdocuments\HRfiles from the command prompt using built-in Windows tools? You can use the extended change access control List tool (Xcals.exe) to modify and view NTFS permissions for files or folders 5. When adding permissions to a directory in an Active Directory Domain, would you prefer to add Groups or individual...
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...connects to the wireless medium such as a network adapter or NIC) that communicates with each other. ESS - An Extended Service Set (ESS) is a set of two or more BSSs that form a single sub network. 6.1.2 6.1 review 1. How the service works is that it allows you to connect to the network. 2. Radio frequency is superior because it is fast cause it through a satellite. 3. WLAN is used in home because there easier to maintain and to take care of it I could be private. 6.2.1 The information that it’s giving me is that its showing the wireless networks around my area. A security key. 6.2.2 the information that given on the command line is it shows all your information on the router you have and it shows you in details. Its allows you to see in-depth allowing your to see information on your router. 6.2 review 1. The biggest problem would be collision if multiple routers are using the same channel a common example of this is Comcast routers are set to use a channel close to the signal for the ps3 so you get a depredation of signal and loss of data packets as the connection goes on. 2. If a previously stated standard is not compatible with your adapter you could have issues with your connection not connecting. 6.3.1 For a secure connection 6.3.2 The IP config show you everything you need to know from your IP address and your gateway and basically it shows you your networking. 6.3.3 Event viewer. 6.3 review 1. A guest having access to your network could result in...
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