Navigation
  • Essay Webtraffic
  • Essay Google Adsense
  • Essay Random Articles
  • Essay Various
  • Essay Self Improvement Articles
  • Essay Articles Marketing1
  • Essay Accounting
  • Essay Acid reflux
  • Essay Acne
  • Essay Adsense
  • Essay Adult
  • Essay Advertising
  • Essay Adwareand spyware
  • Essay Aff10mar
  • Essay Affiliate
  • Essay Affiliate Marketing
  • Essay Affiliate Marketing On The Internet
  • Essay Affiliate Success
  • Essay Affiliate Marketers
  • Essay Affiliate Articles
  • Essay Affiliate Programs
  • Essay After School Activities
  • Essay Aikido
  • Essay Air Purifiers
  • Essay Air freight
  • Essay Air Purifiers
  • Essay Alternative energy
  • Essay Alternative Medicine
  • Essay American History
  • Essay Anger management
  • Essay Art Auctions
  • Essay ArticleMarketing
  • Essay Articles
  • Essay Articles Web Design
  • Essay Articles Marketing
  • Essay Articles
  • Essay Article Marketing
  • Essay Article Writing
  • Essay Artmarketing
  • Essay Arts Entertainment
  • Essay Aspen nightlife
  • Essay Aspen Nightlife
  • Essay Astrology
  • Essay Astronomy
  • Essay Atkins Diet
  • Essay Attraction
  • Essay ATV
  • Essay Auctions
  • Essay Audio Video Streaming
  • Essay Autism
  • Essay Auto Navigation Systems
  • Essay Auto Responders
  • Essay Auto sound systems
  • Essay Auto Leasing
  • Essay Autoresponders
  • Essay Aviation
  • Essay Babies
  • Essay Baby
  • Essay Back pain
  • Essay Backyard Activities
  • Essay Bargain Hunting
  • Essay Bathroom Remodeling
  • Essay Bathroom accessories
  • Essay BBQs
  • Essay Beach Vacations
  • Essay Beauty
  • Essay Biking
  • Essay Biography
  • Essay Black History
  • Essay Blog Marketing
  • Essay Blogging
  • Essay Blogs
  • Essay Bluetooth Technology
  • Essay Boarding
  • Essay Boating
  • Essay Boats
  • Essay Bodydetox
  • Essay Book Marketing
  • Essay Book Reviews
  • Essay Breast Feeding
  • Essay Breast Cancer
  • Essay Budgeting
  • Essay Burglar alarm
  • Essay Business
  • Essay Buying A Boat
  • Essay Buying Paintings
  • Essay California tan
  • Essay Camera bag
  • Essay Candle Making
  • Essay Car Rental
  • Essay Car Stereo
  • Essay Cardio
  • Essay Careers
  • Essay Carpet
  • Essay Cars
  • Essay Cats
  • Essay CD duplication
  • Essay Celebrities
  • Essay Cell Phone
  • Essay Child Care
  • Essay Choosing the Right Golf Clubs
  • Essay Christmas Shopping
  • Essay Cigars
  • Essay Closet Organizers
  • Essay Clothing
  • Essay Coaching
  • Essay Coffee
  • Essay Coin Collecting
  • Essay Colic
  • Essay College
  • Essay College Scholarship
  • Essay Colon Cancer
  • Essay Communications
  • Essay COMPUTER GAMES & SYSTEMS
  • Essay COMPUTERS, LAPTOPS, SMARTPHONES
  • Essay Computers Technology
  • Essay Computer Certification
  • Essay Consumer Electronics
  • Essay Contact Lenses
  • Essay Cooking
  • Essay Copywriting
  • Essay Corporate gifts
  • Essay Crafts
  • Essay Crafts articles
  • Essay Craigslist
  • Essay Creating an online business
  • Essay Creativity
  • Essay Credit
  • Essay Credit Card
  • Essay Credit Cards
  • Essay Credit score
  • Essays Credit Cards
  • Essay Credit Card Debt
  • Essay Criminology
  • Essay Cruise Ships
  • Essay Cruises
  • Essay Currency Trading
  • Essay Customer Service
  • Essay Dance
  • Essays Data Recovery
  • Essay Data Recovery
  • Essay Dating
  • Essay Dating Women
  • Essay Debt
  • Essay Debt Consolidation
  • Essay Decorating for Christmas
  • Essay Dental
  • Essay Dental Assistant
  • Essay Depression
  • Essay Destinations
  • Essay Diabetes
  • Essay Diamonds
  • Essay Diesel VS Gasoline vehicles
  • Essay Dieting
  • Essay Digital Camera
  • Essay Digital photography
  • Essay Digital Cameras
  • Essays Digital cameras
  • Essay Digital Products
  • Essay Disease Illness
  • Essay Disneyland
  • Essay Divorce
  • Essay Divorce rebuild life
  • Essay Dogs
  • Essay Domains
  • Essay EBay
  • Essay Ebooks
  • Essay Ecommerce
  • Essay Education
  • Essay Elderly Care
  • Essay Elliptical trainers
  • Essay Email Marketing
  • Essay Emergency preparation
  • Essay Entrepreneurs
  • Essay Environmental
  • Essay Writing
  • Essay Ethics
  • Essay Eventplanning
  • Essay Excavation Equipment
  • Essay Exercise
  • Essay Extra Income
  • Essay Extreme
  • Essay Ezine Marketing
  • Essay Ezine Publishing
  • Essay Family Budget
  • Essay Fashion
  • Essay Fashion school
  • Essay Feng shui
  • Essay Finance
  • Essay Finance and insurance
  • Essay Fishing
  • Essay Fitness
  • Essay Fitness Equipment
  • Essay Food Beverage
  • Essay Forex
  • Essay Formula D Racing
  • Essay Forums
  • Essay Fruit Trees
  • Essays Fruit Trees
  • Essay Fundraising
  • Essay Gambling
  • Essay Gambling Casinos
  • Essay Games
  • Essay Garage Remodeling
  • Essay Gardening
  • Essay General
  • Essay Goal Setting
  • Essay Golden Retriever
  • Essays Golden Retriever
  • Essay Golf
  • Essay Google Sense
  • Essays Google Adsense
  • Essay Gourmet
  • Essay Government
  • Essay Grief
  • Essay Hair Loss
  • Essay Happiness
  • Essay Hardware
  • Essay Health
  • Essay Health Articles Pack
  • Essay Healthy Aging
  • Essay Healthy Eating
  • Essay Health Fitness
  • Essay Health Insurance articles
  • Essay High Definition Video Cameras
  • Essay High Definition Video Cameras
  • Essay Hiking and Camping
  • Essay Hobbies
  • Essay Hobby Articles
  • Essay Holiday Games Activities
  • Essays Holiday Games Activities
  • Essay Holidays
  • Essay Home and constructions
  • Essay Home decorating
  • Essay Home Schooling
  • Essay Home Security
  • Essay Home Theater Systems
  • Essay Home Theater
  • Essay Homeschooling
  • Essay Home Security
  • Essay Home Based Business
  • Essay Home Entertainment
  •  
    Free Essay
    8.7 of 10 on the basis of 1708 Review.
     

     

     

     

     

     

         
     
    Wireless networks how do they work

     

    Wireless networks use radio waves instead of wires to transmit data between computers. Here's how: The Binary Code: 1s and 0s It's well known that computers transmit information digitally, using binary code: ones and zeros. This translates well to radio waves, since those 1s and 0s can be represented by different kinds of beeps. These beeps are so fast that they're outside the hearing range of humans. Morse Code: Dots And Dashes It works like Morse code, which is a way to transmit the alphabet over radio waves using dots (short beeps) and dashes (long beeps). Morse code was used manually for years via telegraph to get information from 1 place to another very quickly. More importantly for this example, though, it is a binary system, just as a computer system is. Wireless networking, then, can be thought of as a Morse code for computers. You plug in a combined radio receiver and transmitter, and the computer is able to send out its equivalent of dots and dashes (bits, in computer-speak) to get your data from here to there. Wavelengths And Frequencies You might wonder how the computer can send and receive data at high speed without becoming garbled nonsense. The key to wireless networking is how it gets around this problem. First, wireless transmissions are sent at very high frequencies, which allows more data to be sent per second. Most wireless connections use a frequency of 2.4 gigahertz (2.4 billion cycles per second) -- a frequency similar to mobile phones and microwave ovens. However, this high frequency produces a wavelength that is very short, which is why wireless networking is effective only over short distances. Wireless networks also use a technique called "frequency hopping." They use dozens of frequencies, and constantly switch among them. This makes wireless networks more immune to interference from other radio signals than if they transmitted on a single frequency. Internet Access Points The final step for a wireless network is to provide internet access for every computer on the network. This is done by a special piece of wireless equipment called an access point. An access point is more expensive than a wireless card for 1 computer, because it contains radios capable of communicating with around 100 computers, sharing internet access among them. Dedicated access points are necessary only for larger networks. With only a few computers, it is possible to use 1 of them as the access point, or to use a wireless router. Industry Standards Wireless equipment from different manufacturers can work together to handle these complex communications because there are standards which guide the production of all wireless devices. These standards are technically called the 802.11. Because of industry compliance with these standards, wireless networking is both easy to use and affordable today. Wireless Is Simple To Use If all this talk of frequencies has you worried -- relax. Wireless networking hardware and software handle all of this automatically, without need for user intervention. Wireless networking, for all its complicated ability, is far simpler to use than you might expect.

         
    5 Steps to securing your windows xp home computer

     

    Most people are aware that there are continuous security issues with Microsoft’s Windows operating system and other programs. However, what most people do not realize is how easy it is to significantly improve your computer’s security and reduce the likelihood of becoming a victim to ever increasingly sophisticated threats that lurk on the internet. These steps should take less than a couple of hours to complete and should not clean out your wallet. 1) Windows Update – the first crucial step you need to take to make sure that all your Microsoft applications have all the latest product updates installed. These updates or “patches” address security vulnerabilities and other issues. Microsoft usually issues these updates on a monthly cycle. Visit the Microsoft website or switch on automatic updates from the Windows Control panel. Even if your “new” computer is second hand this is still a critical first step. If you buy a used computer with Windows XP make sure Service Pack 2 or SP2 is installed. 2) Strong Passwords - people often overlook this but having well thought through passwords is an important element of your computer security. A strong password should include at least 8 characters with a mixture of text, symbols and numbers. As a minimum you need to make sure the services most at risk have a strong log-in password. These services include your bank, credit card, other financial services like PayPal, your email address and any other services like Ebay which hackers can use to generate profit. 3) Anti Virus Protection – while it is fair to say the threat of the computer virus has receded during the last couple of years they can still inflict serious damage on your computer. Part of the reason why the threat has reduced is because PC manufactures are now more frequently bundling anti virus packages with their new computers. For example last year my new Dell shipped with a 90-day trial of McAfee's Internet Security Suite. The best bet here is to purchase a security package which includes firewall and anti virus software as a minimum. Top brands include McAfee and Symantec Norton products. However, Microsoft has recently entered the market with their "OneCare" offering which is very aggressively priced. 4) Firewall - if you are using a broadband connection then a firewall is definite requirement to manage the traffic flowing between your computer and the internet. A firewall monitors the inbound internet traffic passing through the ports of your computer. Better products also monitor outbound traffic from your computer to the internet. As per above the best bet here is buy a firewall application as part of a security package which most vendors offer as standard. If a hardware firewall is included as part of your router package then you do not need anything else. A company called Zone Labs offer a great free firewall product called Zone Alarm which should be used as a minimum. Windows XP does now ship with a free firewall but the product does not monitor outbound communication and therefore I believe does not offer adequate protection. 5) Anti Spyware Tool - this software is the last piece in your basic internet security set up. This tool helps combat spyware and adware. There is a good mixture of free and paid versions on offer. Good free software include Microsoft's Windows Defender, Spybot S&D or Ewido Anti-Malware. Ewido Anti-Malware is frequently recommended in computer help forums. Be careful if you decide to purchase a solution. There are a number of rogue vendors out there which aggressively push products which offer you little value. Stick to trusted names like Webroot's Spy Sweeper or PC Tool's Spyware Doctor. These products always come out well on independent tests.

         
    An overview of mobile wireless computing

     

    Being able to work while traveling is essential for every professional these days. That’s why laptops have become an essential item. Using the internet on a laptop is also important if one needs to keep in touch with work. Getting wireless internet for your laptop is therefore essential if you are a traveling professional. It is important that if you do so, get a wireless internet capability for your laptop, to get the best possible deal out there and maximize the potential of your computer. Due to the mobility of the laptop, computer users need not to be limited by wires when travelling so wireless internet is very handy. Wireless internet these days is becoming better and faster and almost a necessity for every laptop. Having wireless internet on your laptop allows the user to conduct their business in a timely and easy manner. Having a wifi internet connection on the laptop for example, makes conducting business much easier. It is becoming increasingly popular as well. Being able to connect to the internet while traveling allows the user to check emails constantly and therefore keep contacts, to have access to information like checking figures, and enhance their productivity. To be able to connect to the internet using a laptop, the computer must have the wireless capability to connect to a router. It is imperative that the laptop must have the right network card with a WiFi connector. There are many public spaces that allow for WiFi connections in every western city. The quality of the connection differs from place to place since it depends on a variety of factors. In general, the quality of the connection depends on the quality of the wireless signal that your laptop receives. Being closer or further from the source of the signal in the end will determine the strength and therefore the quality and possibly the speed of your connection. A WiFi network allows for constant connectivity in all hours of the day and every day of the week. Currently, computer and consequently laptop manufactures are investing time and money in enhancing their products networking capabilities and speeds. In the past few years, wireless connectivity has come a long way in terms of quality and strength. When the portable computers were introduced a few years back the notion of the mobile network already existed. Nevertheless, it was not perfected and had many flaws. Over the years however, wireless capabilities have expanded, they have been bettered allowing for greater connectivity, stronger networks, and higher productivity. As a result, and due to the constant technological advancements, laptop users these days can buy the computer and never have to worry about finding a modem, or a router or those inconvenient cables. Just turn on the computer and start surfing the web. Due to the increasing popularity o wireless internet public spaces have been accommodating for this new trend. Public libraries, airports, or even specific businesses provide wireless internet for their customers. In many city centres in North America, there are so many wireless networks functioning at the same place that it is virtually impossible not to find an internet connection to log on to. The only down side to wireless computing is that it might be associated with health risks that we are not yet aware of. Overall, however wireless computing is the way to go for the business professional, the student or every other avid computer user.

         
    Cabling your home for computer network still a requirement

     

    Cabling your home for computer network - still a requirement? With proliferation of wireless networking and communication equipment it is oh-so-tempting to cut the cord and save a significant sum of money in the process. But is everything that a regular computer networking user needs can be done using just wireless network? Let’s take a look at some pros and contras: 1. One important advantage of having a cabled network is the available bandwidth or simply speed. At the present point in time the speed of connection via a simple and inexpensive CAT5E cable can be 1000Mbit/sec, whereas the best that IEEE802.11g (one of the many flavors of Wi-Fi) can offer is only 54Mbit/sec. It may not seem so significant if you think you are only browsing Internet, and the DSL speed available to you is 1.5Mbit/sec. However, if you need to print via your network connection on a remote printer, you should realize that the print jobs, depending on the amount of graphic data in them, can easily reach dozens and even hundreds megabytes. Since 1Byte=8bit one 100MByte print job will take 15 seconds (and in reality this time can be much longer) to transmit via a Wi-Fi wireless connection, and this time shrinks to mere 1 sec or less on wired 1000MBit/s Ethernet connection. Same principal applies to transferring files, backing up files on other computers in the network etc. 2. It is not possible today and with all probability will not be possible in the future to transmit power needed for your networking device via the wireless link. Unless, of course, you would be willing to be subjected to very high levels of microwave radiation. Thus a device that was marketed to you as “un-tethered” will in fact be very much tethered via the power cord or will have to be re-charged every so often. The power requirements are increasingly important for devices that are expected to be always online, such as phone sets. Therefore it is best to have it connected via a cable that can deliver both power and the communication signal at the same time. 3. Wireless communications are very much proprietary and require whole gamut of conversion equipment to transmit multi-media signals. The same CAT5E cable can without any modification support phone, computer network, balanced line level audio signal, baseband video signal as well as host of other, more specialized, control applications’ signals. With inexpensive adapters called “baluns” the same cable can carry significant number of channels of broadband television or carry a baseband video, such as security camera output, through great distances. All of those applications, except the computer network of course, will require specialized expensive conversion equipment if they needed to be transmitted via a Wi-Fi link. 4. The cost benefit of not running wires around the house is not as simple as issue as it seems. Having installed a wireless network at home you have only eliminated the need to wire for a single application – computer network. A modern home, however, requires all kinds of wiring to run even without regard to computers. The power and phones are obvious examples, as well as thermostats and security systems. Pre-wired speakers are common and most homes today have intercom systems as a desirable option, and those also require extensive wiring. It is very likely that the same contractor running the intercom or security cables is qualified to run computer cables – CAT5E or better. If you are building a home, you should definitely check if computer cabling option is available in your new home, and our advice is to go ahead and purchase it before the walls close. It is going to be a pretty involved and expensive procedure to install the cables later. As an added cost benefit of a wired computer network you will find that all modern computers ship with wired Ethernet network interface card included, and the latest models ship with 1000MBit/sec cards that are essentially free for the computer’s owner. There are multiple sources of information available on proper planning and design of a residential cabling for voice, data, audio, video and other applications. One of the best sources is the TIA/EIA-570B standard, most resent release of which has been published in 2004. The standard outlines recommended types of the cables, principals of cable distribution in a single - and multi-dwelling units as well as recommended amount of cables to be installed based on the size of the house. In conclusion, cutting the wire seems like a step forward, some sort of liberation of computer from the bonds of the infrastructure. I would caution the reader, however, to take a more balanced and informed approach before joining the wireless revolution. There are still (and will remain in foreseen future) sound reasons to include properly designed cabling system into the list of your dream home options.

         
    Category 6 cable a category above the rest

     

    Today's bandwidth expectations mean that Category 5 is strategically dead. The Category 5 Enhanced (5e) standards, which should have been ratified in August and may be finalized at November's committee meeting, specify new measurements that provide more margins for 100BaseTX and ATM-155 traffic. Critically, Category 5e standards make reliable Gigabit Ethernet connections possible. But many structured cabling suppliers argue that Category 5e is only an interim solution on the road to Category 6, which will support at least 200 MHz; in the interests of sufficient operating margin, the IEEE is requesting a 250-MHz Category 6 specification. Despite the fact that the Category 6 standards are only at draft stage, manufacturers are offering a host of products and claiming that these products comply with the draft proposals. What is a category 6 cable? Out of the three cable categories (Cat-5, Cat-5e & Cat-6), Category 6 is the most advanced and provides the best performance. Just like Cat 5 and Cat 5e, Category 6 cable is typically made up of four twisted pairs of copper wire, but its capabilities far exceed those of other cable types because of one particular structural difference: a longitudinal separator. This separator isolates each of the four pairs of twisted wire from the others, which reduces crosstalk, allows for faster data transfer, and gives Category 6 cable twice the bandwidth of Cat 5! Cat 6 cable is ideal for supporting 10 Gigabit Ethernet, and is able to operate at up to 250 MHz. Since technology and standards are constantly evolving, Cat 6 is the wisest choice of cable when taking any possible future updates to your network into consideration. Not only is Category 6 cable future-safe, it is also backward-compatible with any previously-existing Cat 5 and Cat 5e cabling found in older installations. Category 6, (ANSI/TIA/EIA-568-B.2-1) is a cable standard for Gigabit Ethernet and other network protocols that is backward compatible with the Category 5, category 5e and Category 3 cable standards. Cat-6 features more stringent specifications for crosstalk and system noise. The cable standard is suitable for 10BASE-T / 100BASE-TX and 1000BASE-T (Gigabit Ethernet) and is expected to suit the 10000BASE-T (10Gigabit Ethernet) standards. It provides performance of up to 250 MHz. The cable contains four twisted copper wire pairs, just like earlier copper cable standards. Although Cat-6 is sometimes made with 23 gauge wire, this is not a requirement; the ANSI/TIA-568-B.2-1 specification states the cable may be made with 22 to 24 AWG gauge wire, so long as the cable meets the specified testing standards. When used as a patch cable, Cat-6 is normally terminated in 8P8C often incorrectly referred to as “RJ-45" electrical connectors. Some Cat-6 cables are too large and may be difficult to attach to 8P8C connectors without a special modular piece and are technically not standard compliant. If components of the various cable standards are intermixed, the performance of the signal path will be limited to that of the lowest category. As with all cables defined by TIA/EIA-568-B, the maximum allowed length of a Cat-6 horizontal cable is 90 meters (295 feet). A complete channel (horizontal cable plus cords on either end) is allowed to be up to 100 meters in length, depending upon the ratio of cord length: horizontal cable length. The cable is terminated in either the T568A scheme or the T568B scheme. It doesn't make any difference which is used, as they are both straight through (pin 1 to 1, pin 2 to 2, etc). Mixed cable types should not be connected in serial, as the impedance per pair differs and would cause signal degradation. To connect two Ethernet units of the same type (PC to PC, or hub to hub, for example) a cross over cable should be used, though some modern hardware can use either type of cable automatically. Return loss measures the ratio of reflected-to-transmitted signal strength and is the single most difficult test to repeat with consistent results; at Category 6 levels, the difference between a pass and a fail can be the amount of bend in a test cord. Return loss is also causing headaches for connector manufacturers, because the RJ-45 system isn't up to the job. The final stumbling block with Category 5e ratification concerns the RJ-45 hardware; Category 6 is committed to RJ-45 for backward compatibility, but the ISO's proposed Category 7 system will have a new and as-yet-unspecified connector to accompany its revised cabling. Today, the return loss problem explains why manufacturers of Category 6 hardware, which is supposed to be interoperable, claim Category 6 performance only if you use the manufacturers' matched parts throughout a channel link. The Telecommunications Industry Association (TIA) is working to complete a new specification that will define enhanced performance standards for unshielded twisted pair cable systems. Draft specification ANSI/TIA/EIA-568-B.2-10 specifies cable systems, called "Augmented Category 6" or more frequently as "Category 6a", that operates at frequencies up to 500 MHz and will provide up to 10 Gbit/s bandwidth. The new specification has limits on alien crosstalk in cabling systems. Augmented Category 6 specifies cable operating at minimum frequency of 500 MHz, for both shielded and unshielded. It can support future 10 Gb/s applications up to the maximum distance of 100 meters on a 4-connector channel.

         
    Cisco s catalyst 6500 remains the network switch to beat

     

    San Francisco, California October 10, 2006: Following a lackluster Q3, Cisco Systems emerges as the leader in the 10 Gigabit Ethernet Switch Market for the fourth quarter. Fueled by increased demand and an overall rise in the average selling price, Cisco experienced significant gains in a market of over $300 Million. With almost 70% of the projected $1.3 Billion 10-Gig market share and a more powerful, yet affordable design, the Catalyst 6500 is poised to cement Cisco as the dominating force in the industry. With the recent release of an eight-port, 10-Gigabit Ethernet module for the 6500, Cisco is quickly pulling away from the rest of the pack. In addition, upgrades like the Application Control Engine (ACE) module have prompted companies like Pure Video Networks to adopt Cisco switches to manage traffic of their popular video websites. Implementing simultaneous data center services such as server load balancing, integrated network and application switching/security, the ACE module delivers the highest performance in the industry. The ACE Simplifies application infrastructure by combining the functionality of multiple application delivery appliances into a single module, including server load balancing and off-load, Secure Socket Layer (SSL) protocol, security, and application optimization capabilities. Already the most successful networking switch on the IT market, the 6500 Series reduces existing operational costs and improves a network's ability to respond to intensive bandwidth demands. In general, customers using the services modules for the Catalyst 6500 reduce their total cost of ownership by taking advantage of simplified infrastructure, improved investment protection, pervasive security, and the high levels of performance, scalability, and innovative technologies. With over twenty unique service modules in five distinct categories, the Catalyst 6500 ranks among the most scalable, high-performance platform for integrated services. Currently, Cisco offers modules that address security issues, application, networking, network monitoring, wireless/mobility, and IP communications, which can be integrated into existing catalyst switches. Each modules offers upgraded performance and reinforces Cisco's hold on the market for network switches. With more than $20 Billion is sales sine it's release in 1999, the 6500 Series switch has become the most popular networking platform ever. While Cisco has been able to fend off most threats to their position, rival Foundry Networks, and newcomer Force 10 have recently launched new 10Gbe ready products aimed at disrupting the company's market share. According to literature on Force 10's Terascale E-Series 1200, the E1200 boasts of more than double the ports of the Catalyst 6500 (1260 vs. 576 Ethernet ports/chassis). While this may be good news for the company, Force 10 has been focused on the data center vertical, and is therefore still untested in the enterprise market. Foundry's BigIron RX series switch has received favorable press for it's size/performance ratio and lower prices. With the launch of the new RX series, Foundry has mounted a consistent affront to Cisco's unchallenged reign. Even with the competition mounting new efforts, the Cisco name is still a major factor among IT professionals whose networks depend on their equipment. Fortunately for the stalwart Cisco, reputation is still the key to market dominance.

         
    Computer consulting and virtual it

     

    Do you own or manage a computer consulting company? Would you like to achieve greater small business success? If so, then get ready to learn why most computer consulting companies get IT (Information Technology) wrong and what you can do about IT. The Problem: Why Most Computer Consulting Companies Get IT Wrong Most owners of computer consulting companies make their jobs much harder than need be. Why? Because these computer consulting business owners fall in love with the technology… and view their small business clients as a distant second priority. However, if you get this part of “IT” wrong, you will doom your computer consulting company to “clueless geek” status. It's crucial that you understand one extremely important principle here: Recruiting and retaining small business clients is your #1 computer consulting priority. Keeping up with IT should never get in the way of the mission of your computer consulting company. In other words, don't get seduced by the hardware, operating systems or applications. Fall-in-love with the business opportunities surrounding how you solve your clients' biggest business problems with your recommended IT solutions. That's the real mission of a computer consulting company. The Solution: Blend Computer Consulting and Virtual IT To put this all in perspective with your computer consulting company, you need to understand and embrace the concept of virtual IT. Virtual IT is what allows your computer consulting company to function as an extension of your small business clients' companies. Your computer consulting company essentially becomes the outsourced IT department for your small business clients. As owner or manager of a computer consulting company in this role, you will most likely become the de facto CIO (chief information officer), CTO (chief technology officer), or IT manager for your small business clients. And just like any well-rounded internal IT department, your virtual IT computer consulting business will need to provide, or arrange for, a complete soup-to-nuts solution that includes services like help desk, desktop support, network administration, engineering, security, training, procurement, and asset management… because anything short of the complete virtual IT solution will leave valuable computer consulting money on the table. The Bottom Line Most computer consulting companies are making a huge mistake when it comes to their small business engagements… because these computer consulting business owners fall-in-love with the technology, at the expense of the business opportunities. In order for your computer consulting company to flourish, make sure that you understand the concept of virtual IT and build virtual IT into every major business decision for your computer consulting company. To continue learning more about how you can use virtual IT to grow your computer consulting company, go sign-up right now for the one-hour free training seminar on 5 Easy Ways to Grow Your Computer Consulting Business at ComputerConsultingBusiness Copyright MMI-MMVI, Computer Consultants Secrets, All Worldwide Rights Reserved. {Attention Publishers: Live hyperlink in author resource box required for copyright compliance}

         
    Computer consulting profit secrets

     

    Do you own or manage a computer consulting company? Are you having trouble growing your computer consulting company's profits? If so, then you must learn how to focus on your computer consulting firm's profit and bottom line. In this article, we'll look at 7 profit secrets and strategies you can use in your computer consulting business, to ensure that you are able to balance your clients' small business IT needs against your own computer consulting company's profitability challenges. Origins of the Problem While focusing on your computer consulting profits may sound simple enough at first glance, this business-focused discipline often eludes many a computer consulting firm. This usually happens because many computer consulting business owners fall in love the technology gadgetry, and get seduced by seemingly attractive reseller channel programs, at the expense of their business' profit. At the end of the day however, your computer consulting company is a business… not a charity and not a hobby. And your computer consulting company must be run like a business. Profit Secret #1: Show motivation with your small business computer consulting clients. To avoid being labeled as just another clueless geek, you need to position your computer consulting services to be more in line with those of a virtual CIO for hire. So always be on the look out for new ways to enhance your clients' businesses… not just fix broken desktops and servers. Profit Secret #2: Be dedicated to the task and relentless in your pursuit to improve the status quo. Because it takes a lot of work to land the best computer consulting clients, you need to focus on lifetime customer value… not just one-shot-deal sales. So always remember that your proposed or recently implemented computer consulting technology solution isn't a one-shot deal. This kind of long-term vision and planning requires tremendous staying power and perseverance… which often escapes many computer consulting business owners. Profit Secret #3: Don't be afraid to be creative with your client engagements. Small business technology solutions often need to stay within relatively modest budgets. And your computer consulting solutions must work without the need for in-house IT staff. To satisfy these challenges, don't be afraid to think outside of the box when appropriate. Profit Secret #4: Evaluate how your clients' systems, both paper - and computer-based, function today. As part of your virtual CIO role, look at how these existing clients systems are meeting or not meeting present and future needs. Most of this work will be done during IT audits… another key computer consulting profit secret that can really help to separate you from the pack of mediocrity. Profit Secret #5: Put yourself in your clients' shoes and think about what THEIR clients need from them. Yes, as a computer consulting business owner, you need to have good people skills and a certain degree of empathy for your clients' business problems. But an even more advanced computer consulting business owner doesn't just stop at understanding their clients' business problems. The virtual CIO really digs in and learns about their clients' customers' business problems… one layer down on the value chain. Profit Secret #6: Keep up with advances and new versions. As virtual CIO for your computer consulting clients, your clients depend on your firm to advise them on what tools can better help their businesses grow. So while you can't allow this R&D and training to consume and devour all of your scarce weekly schedule, you do need to stay a few steps ahead of your clients' IT needs at all times. Profit Secret #7: Summarize and share that information with your clients. The essence of your R&D and training should focus on one major objective: will this new platform or tool add value to your computer consulting clients' existing or future installations? And how you can best summarize this information, in layperson language that non-technical clients can understand? The Bottom Line Your computer consulting firm's needs to be your client's virtual IT department can often be at odds with your computer consulting firm's need to be profitable. A big part of this problem happens because computer consulting business owners fall in love with technology, at the expense of their marketing and sales activities. To make sure you don't fall into this same strap, which can kill your computer consulting profits, don't go overboard with your training and R&D activities. Be sure to keep business development activities in your weekly schedule… EVERY week. If you want to keep your computer consulting profits as healthy as possible, make sure that you're proactive in your marketing and sales activities… dig the well for computer consulting profits BEFORE you're thirsty. And a great way to start is by listening to the profit-generating secrets at computer-consulting-101.com Copyright MMI-MMVI, Small Biz Tech Talk Blog. All Worldwide Rights Reserved. {Attention Publishers: Live hyperlink in author resource box required for copyright compliance}

         
    Computer network management

     

    : Today it is almost inconceivable for a business not to have computers, whether it is a construction company or a high technology firm. When a business has more than one computer, they are almost always connected together in a local area network. These networks may be more or less advanced and therefore more or less costly. Companies invest so much (in terms of both money and time) in a local area networks because there are many advantages that a local area network brings to a business and how it is administered. Some businesses use a local area network in such a way they are highly dependent on it always working. If the company's network fails, then you may see all the employees chatting away in the corridors because they can't do their work. This means big losses for the company and causes stresses on the employees. All companies must consider their local area networks a vital asset and downtime must be avoided. This imposes huge demands on the network staff to keep such networks running almost 100% of the time. The advantages of Computer Network Management One of the main advantages of installing and maintaining LANs is the opportunity they create for better communication and cooperation between employees and customers. Security considerations: Local Area Network security can be both a help and hindranceprehensive security is beneficial because it provides a central and safe strategy for data access and disaster recovery. All information is protected by the design and implementation of the network security solution. On the other hand, interconnecting computers in local area networks creates a security risk, since doing so makes it technically possible for intruders to access many machines on the network at once. Cost considerations: Installing a local area network is a relatively expensive project. Servers, cabling, switches, routers and software can all be expensive and should never be purchased without expert advice. Keeping the network operating and secure also requires a lot of resources and can be costly. Surprisingly, a local area network can bring a number of cost savings. Sharing resources avoids the need to purchase equipment for each individual. Even more important is the security that a local area network can provide. Data loss could cost a business a great deal of money and in some cases, cause the business to shutdown altogetherputer Network Management should require a consistent routine for data backups with regular checkups of data quality - a practice that will save a company huge sums in the event of a mishap. Computer Network Management: preliminary analysis phases The first phase of computer network management is to determine the source of the problem (a preliminary study that looks into several options of differing scope may be useful here) and defining it in a specification of requirements. Examples of what should be evaluated are different network operating systems, mail systems, and other applications. The choice of hardware components should also be evaluated. This phase is generally aimed at establishing what the system should do, not how it should do it. Computer Network Management: design phase The purpose of design phase is to determine how the requirements of the specification are to be met. The current approach to large, complex projects is to break them down into smaller, more manageable subprojects. Computer Network Management: implementation phase This phase involves the physical installation of the local area network. Cables are run, software is installed, and computers and other hardware are put in place. Computer Network Management: integration and system testing phase In this phase, commissioning of the network begins, and routines are adapted to users and the operating personnel. The system must be tested, both to ensure that the network meets the requirements set out in the specification and that it is stable enough to perform the central function it has in the organization. Computer Network Management: operation and maintenance Local area networks have complex operating routines. This is because there may be serious consequences when faults occur or unauthorized persons gain access to the system. Many companies have employees devoted solely to take care of running and maintaining computer networks. These system administrators may deal with network issues such as performance, reliability and security of both hardware and software. Computer Network Management: tools Although an organization may have computer administrators on site, they must also monitor the network more than eight hours a day. In fact, some of the worst trouble that arises with networks can happen during the night hours when nobody is using the network. With the right computer network management tools, your organization can receive the security of knowing that problems will be foreseen, prevented, and taken care of - and that your network administrator can be notified at a moment's notice, should anything go exceptionally wrong.

         
    Computer networking fundamentals

     

    A computer network is a collection of two or more computers with communication between them through a medium. The communication medium can be through radio waves, wires, infrared, optical fibers etc. Computer network is an integral part of our daily lives, with the most important reason being that of communication. The use of computer networking is to share resources like fax machines, printers, modems, files etc., and its other uses are database server, computer server, email, chat, internet etc. The computer to which the resources are attached is called the server and the other computers that access the resource are called clients. In peer-to-peer computer networks there are no servers. The sharing of fax machines, printers, and modems amongst many computers and users reduce the operational cost. A database on a computer network is a very important application as it stores and runs many important data and jobs. Emails and chats can be used for instantaneous communication and sending of files on a computer network. The computer networks are classified, depending upon the size, as Local Area Networks (LAN), Wide Area Networks (WAN), Metropolitan Area Networks (MAN) and Personal Area Networks (PAN). The topology (topology is the way the computer networks and network resources are connected) of the networking can be classified as Bus Network, Ring Network and Star Network. The networking hardware basically consists of wiring, network cards and a hubputer network cards are required so that one computer can understand what the other computer is “talking”. Network cards have a unique MAC address to identify computers on a computer network. Hubs connect all the computers in the network. Hubs can also be used to connect to other hubs to increase the size of the computer network. Two computers can be connected using Ethernet cards or phone lines or power lines for communication, with hardware kits available at roughly a cost of $100. As the number of computers in an office or a home increases, so do the number of cables, so wireless networking is a viable solution. In wireless networking radio transreceivers or infrared signals are used to communicate between computers and devices. Examples of wireless networking include Wi-fi and Bluetooth technology, though there may be security issues involved in wireless networking. However there definitely is a stronger preference towards wireless networking nowadays among consumers. Computer networks have added a new dimension to the 21st century. Today the cyber world is much faster and wider than the real world. This has all been made possible due to computer networksputer networks have revolutionized business, communication, travel, research, defense, society and almost all human endeavors. The evolution of computer networks has helped the technological revolution take a big leap forward.

         
    Crime fighting computer systems and databases

     

    As crime globalizes, so does crime fighting. Mobsters, serial killers, and terrorists cross state lines and borders effortlessly, making use of the latest advances in mass media, public transportation, telecommunications, and computer networks. The police - there are 16,000 law enforcement agencies in the Unites States alone - is never very far behind. Quotes from the official Web pages of some of these databases: National Center for the Analysis of Violent Crime (NCAVC) Its mission is to combine investigative and operational support functions, research, and training in order to provide assistance, without charge, to federal, state, local, and foreign law enforcement agencies investigating unusual or repetitive violent crimes. The NCAVC also provides support through expertise and consultation in non-violent matters such as national security, corruption, and white-collar crime investigations. It comprises the Behavioral Analysis Unit (BAU), Child Abduction and Serial Murder Investigative Resources Center (CASMIRC), and Violent Criminal Apprehension Program (VICAP). VICAP is a nationwide data information center designed to collect, collate, and analyze crimes of violence - specifically murder. It collates and analyzes the significant characteristics of all murders, and other violent offenses. Homicide Investigation Tracking System (HITS) A program within the Washington state's Attorney General's Office that tracks and investigates homicides and rapes. Violent Crime Linkage System (ViCLAS) Canada-wide computer system that assists specially trained investigators to identify serial crimes and criminals by focusing on the linkages that exist among crimes by the same offender. This system was developed by the RCMP (Royal Canadian Mounted Police) in the early 1990s. UTAP, stands for The Utah Criminal Tracking and Analysis Project Gathers experts from forensic science, crime scene analysis, psychiatry and other fields to screen unsolved cases for local law enforcement agencies. International Criminal Police Organization (ICPO) - Interpol's DNA Gateway Provides for the transfer of profile data between two or more countries and for the comparison of profiles that conform to Interpol standards in a centralized database. Investigators can access the database via their Interpol National Central Bureau (NCB) using Interpol's secure global police communications system, I-24/7. Interpol's I-24/7 Global communication system to connect its member countries and provide them with user-friendly access to police information. Using this system, Interpol National Central Bureaus (NCBs) can search and cross-check data in a matter of seconds, with direct and immediate access to databases containing critical information (ASF Nominal database of international criminals, electronic notices, stolen motor vehicles, stolen/lost/counterfeit travel and ID documents, stolen works of art, payment cards, fingerprints and photographs, a terrorism watch list, a DNA database, disaster victim identification, international weapons tracking and trafficking in human beings-related information, etc). Interpol Fingerprints Provides information on the development and implementation of fingerprinting systems for the general public and international law enforcement entities. Europol (European Union's criminal intelligence agency) Computer System (TECS) Member States can directly input data into the information system in compliance with their national procedures, and Europol can directly input data supplied by non EU Member States and third bodies. Also provides analyses and indexing services.

         
    Does the google desktop really put your privacy in jeopardy

     

    There has been a lot of talk recently about Google Talk and how there are serious privacy concerns with the new application. The biggest concern seems to come with the ability to search and share multiple computers with one account. In other words, you could use a single desktop search account to search, index and allow you to share files between your desktop and laptop for example. But are these concerns grounded in truth? Is there really a privacy issue here? I downloaded and installed the new Desktop Search beta the other day. It has some interesting new features such as the ability to remove panels from the sidebar and dock them anywhere you like on your desktop. And there are several more panels available to let you do anything from manage what is indexed, to passing time by playing games. One of the coolest features is its ability to reach beyond the desktop it is on to do a variety of things. Now, I can play tic tac toe with co-workers, or even friends around the world. But the biggest, and most troubling update to some is the ability to remotely index files, as well as share them using Google servers to temporarily store the items. By turning this feature on you give Google the right to store your files for up to 30 days. Therein lies the crux of the issue – there seems to be no way around this 30 day requirement. All I have to say is 'so what?' So what if you have to give Google this ability? Google will encrypt the data so that no one else can access it. And even if there is some sort of DOJ subpoena requiring access to these files I don't think it would stand up in court. This is because Google has set up a network whereby all your Google activities are tied to one Google account. Your personalized home page, gmail, google analytics, adwords and adsense accounts all share the same Google account. Therefore, it would be difficult for anyone to get a subpoena to review information pertaining to only part of that account. Legalities aside, if you are that concerned about the privacy being surrendered to Google in order to use this system then don't sign up for it. You can still download and use the new Desktop Search with most of its new features, but you don't have to use the file sharing. But what if you want to share files between computers? Well, do what I did – go to your favorite electronics store and buy a flash drive. I just bought a USB flash drive with over 2 gigs of storage for under $100. Now I can easily transfer anything between any computer with no worry of some government agency wanting to know what's on it. As I said, I do have the new Google Desktop installed, and I did look at the settings for the search and file sharing, but I didn't turn them on. I have no need to be able to search my home computer from work and vice versa, nor do I need to share files between the two computers. And if I did, I'll simply use the FTP site I have set up on a computer at home or the aforementioned flash drive. Really, when it comes to all the other ways that Google captures your personal data, from search history to Gmail, should we be all that concerned that some files may end up being stored on a Google server somewhere? I think we should have other concerns. For example, I think we should be concerned about what Google already knows about us via those services I mentioned earlier. I think business owners should be concerned that such a service would allow employees to easily steal and transfer data to and from work. I think if you are that scared of the US government infringing on your privacy then you shouldn't have a Google account, nor Google Desktop Search nor a Gmail account. In fact I don't think you should have any Internet accounts because quite honestly everyone is a target for the DOJ. Further, I can almost guarantee you that your local ISP will fold and hand over the data much easier than Google will. So before you start complaining about how Google could infringe your privacy, remember that YOU have the ability to stop it from happening. It's just a matter of choosing to do so.

         
    Fiber optics in the real world

     

    Optic fibers are used widely in the medical field for diagnosing and treating a variety of ailments. Because optic fibers can be made extremely thin and made into flexible strands, they can be used for insertion into blood vessels, lungs and other parts of the body. Optic fibers have been enabling physicians to look and work inside the body through tiny incisions with an instrument called an Endoscope. An Endoscope is a medical instrument made to carry two bundles of optic fibers inside one long tube. One bundle of optic fiber directs light at the tissue being examined, while the other bundle of optic fiber transmits light reflected from the tissue, producing a detailed image. Endoscopes may be designed to look into specific areas of the human body. For example, physicians can use the optic fibers in the Endoscope to examine knees, shoulders and other joints in the body. Arthroscopy (pronounced ahr-THROS-kuh-pee) is a technique of using another medical instrument called the Arthroscope. This instrument is straight and cylinder-like with a series of lenses and optic fiber bundles that come in sizes of 1/12 to 1/5 inch (2 to 5 millimeters.) The Arthroscope is used to examine a joint in a body, such as knee joints, ankles, elbows, hips and shoulders. This is done by the Arthroscope being inserted into a joint of the body through a small incision. A light is then transmitted by the use of the optic fibers to the tip of the Arthroscope to illuminate the joint. The use of optic fiber through the Arthroscope enables a physician to thoroughly examine a joint for diagnosis or treatment. Optic fibers used in the Arthroscope can be used to measure temperature and other bodily attributes as well as being used in performing surgical procedures. The problem most commonly treated by Arthroscopy is torn cartilage in the knee. This is when a small incision is made at the joint for use of the optic fiber in the Arthroscope and then a second incision is made for the use of other surgical instruments to remove the cartilage. The primary advantage of using optic fibers through Arthroscopic surgery is that the operation can be performed through a small incision, resulting in the patient experiencing the least amount of discomfort and a healing time that is much shorter, when compared to the other methods of surgery. Aside from the uses of the Endoscopes and the Arthroscopes, another widely used function of optic fibers in the medical field is the ability for the optical fibers to be inserted into blood vessels to give a quick and accurate analysis of blood chemistry. Physicians have also found medical use of the optical fibers to direct intense laser light at a wound to stop bleeding or to burn away abnormal tissue. Fiber optic training is necessary in the field of medicine. The use of optic fiber through medical science continues to grow rapidly to everyday to develop more new and advanced medical devices to enable physicians to provide people with better service.

         
    Finding your mac address on wired and wireless network cards

     

    The Answer To The Media Access Control Question ---------------------------- Over the past few weeks I have received quite a few e-mails about Ethernet cards, both wired and wireless, and more specifically, about Media Access Control (MAC) addresses. I think the main reason I’ve received so many questions about Ethernet cards and MAC addresses is people trying to secure their home wireless networks and their desire to use MAC address filtering. This type of filtering in wireless networks can be configured to allow or deny specific computers to use or attach to the wireless network, based on the MAC address. My first thought was to write an article just about MAC addresses and wireless Ethernet. After thinking about it I decided to expand on this and go over some specific information about Ethernet cards and communication. Different Ways Of Finding Your MAC Address And More -------------------------------------------------- There are several ways of finding your Ethernet and communications protocol information. Many Ethernet card manufacturer’s have proprietary software that can reveal this information but they work differently depending on the manufacturer. So we will use the Windows 2000 and XP “ipconfig” utility since this is available in the majority of Windows Operating Systems. First, go to “start” -> “run” and type “cmd” without the quotes. Then hit the enter key. At the command line type “ipconfig /all”, again without the quotes. Actually, just typing ipconfig without the /all will work but will only provide you with abbreviated information regarding your network cards. An example of what you might see by typing the “ipconfig /all” command is below with each item commented in green lettering: Fault Tolerant And Highly Availability Computer Systems ---------------------------- There are several ways of finding your Ethernet and communications protocol information. Many Ethernet card manufacturer’s have proprietary software that can reveal this information but they work differently depending on the manufacturer. So we will use the Windows 2000 and XP “ipconfig” utility since this is available in the majority of Windows Operating Systems. First, go to “start” -> “run” and type “cmd” without the quotes. Then hit the enter key. At the command line type “ipconfig /all”, again without the quotes. Actually, just typing ipconfig without the /all will work but will only provide you with abbreviated information regarding your network cards. An example of what you might see by typing the “ipconfig /all” command is below: OutPut Of The “Ipconfig /All” Command ---------------------------------------------------------- Windows IP Configuration Host Name . . . . . . . . . . . . : Home Computer This is the name of your computer, typically defined during the windows installation. However, it can be changed after installation. Primary Dns Suffix . . . . . . . : domain If your computer participates in a network such as a Microsoft Windows domain this item may contain the name of the domain. Node Type . . . . . . . . . . . . : Unknown The Node Type may say Unknown, or peer-to-peer, or in some cases “hybrid”. It is a setting that has to do with the Windows Internet Naming Services used in certain types of Windows domain networks. IP Routing Enabled. . . . . . . . : No This setting determines if Windows XP or 2000 will function as an IP router. If you have two or more network cards you can setup your system to act as a router, forwarding communications requests from one network to another. Windows 2000 can be configured to do this in a pretty straight forward fashion; Windows XP will need a registry modification. WINS Proxy Enabled. . . . . . . . : No WINS Proxy is another setting that is related to the “Node Type” we discussed earlier. It is normally not a required setting in a home or small office network, or newer types of Microsoft Windows domains. Ethernet adapter Wireless Network Connection 2: If you have multiple Ethernet (network) cards in your systems, as I do in this laptop, you will have multiple listings. This one happens to be the second Ethernet card, an internal wireless Ethernet card. Description . . . . . . . . . . . : Broadcom 802.11b/g WLAN This is the description of the Ethernet card, usually the Name / Manufacturer and type of Ethernet card. In this case, it is a Broadcom wireless Ethernet card built into my laptop. Physical Address. . . . . . . . . : 00-90-4B-F1-6E-4A And here we have the MAC address. The MAC address is a 48 bit hexadecimal code and is suppose to be a totally unique address. It is 48 bits because each number or letter in hexadecimal represents 8 bits. Hexadecimal numbers range from 0,1,2,3,4,5,6,7,8,9,A, B,C, D,E, F. There are 6 alpha-numeric codes hence 6*8=48(bits). The first 3 codes identify the manufacturer of the card and the remaining codes are used to create a unique number. Theoretically there should never be a card with same MAC address on a local network. However, there are a few exceptions. There are software tools that allow you to change this code. In fact, this is a step some hackers take to attack other systems on a local network. I say local network because MAC addresses are not routable between network segments. By spoofing this address, you can impersonate another machine on the local network. Traffic that was bound for the intended target can be redirected to the hacker’s machine. This is the address you would also use to populate a MAC address, or physical address table when setting up your wireless access point to support MAC address filtering. DHCP Enabled. . . . . . . . . . . : Yes DHCP, or the Dynamic Host Control Protocol, if enabled means your computers IP address is being provided by a DHCP server on you network. The DHCP server could be your wireless access point, cable/dsl router, cable modem, or a server on your network. Also, if a DHCP server is not enabled on your network, your computers Operating System will auto generate a random IP address within a certain predefined range. This means you could network a group of systems together without having to manually assign the IP settings. IP Address. . . . . . . . . . . . : 192.168.0.117 This parameter provides you with your current IP address. The address listed above is what is called a "private" address. There are certain classes of IP addresses that have been set aside for private use. This means for your internal, local, or private network at home or office. These addresses are not, or should not, be routable on the Internet. The Internet routes what are called “valid” IP addresses. Your cable/dsl router or cable modem has a valid IP address assigned to its “external” network interface. The external interface may be your phone line or cable TV cable. Subnet Mask . . . . . . . . . . . : 255.255.255.0 The Subnet Mask is a special number, or in some sense, filter, that breaks down your IP address, in this case private IP address, into certain groups. IP addresses and Subnet Masks can be a complicated matter and would take an entire article to go over. Default Gateway . . . . . . . . . : 192.168.0.254 The default gateway, the IP addresses listed above, is the IP address of the device that will route your request, such as when you try to browse a website, to the Internet. It is a bit more complicated than that though as gateways or routers can route traffic to various different networks, even other private networks. At your home or small office, this gateway most likely is your cable/dsl modem or router. DHCP Server . . . . . . . . . . . : 192.168.0.49 The DHCP server, remember we talked a little about this above, is the device that assigns your computer an IP address and other information. DHCP servers can assign all kinds of information such as; Default Gateway, Domain Name Servers (DNS), IP address, Subnet Mask, Time Server, and much more. DNS Servers . . . . . . . . . . . : 192.168.0.49, 64.105.197.58 DNS Servers are internal or external servers that resolve Fully Qualified Domain Names (FQDN), such as defendingthenet , to IP addresses. This is done because computers don’t actually transmit your requests using the domain name, they use the IP address assigned to the FQDN. For most home or small office users, the primary DNS server is the IP address of your cable/dsl router. Your cable/dsl router than queries an external DNS server on the Internet to perform the actual resolution of the FQDN to IP address. The address 192.168.0.49 is an internal private device on my network whereas the 64.105.197.58 is an external public Internet DNS server and is present just in case my router has trouble performing the DNS resolution tasks. Lease Obtained. . . . . . . . . . : Sunday, March 19, 2006 6:38:16 PM This information tells you when your computer received its IP address and other information from a DHCP server. You will notice it says “Lease Obtained”, that is because most DHCP servers only lease the IP address to you from a pool of available address. For instance, your pool may be 192.168.1.1 through 192.168.1.50. So your DHCP server has 50 IP addresses to choose from when assigning your computer its IP address. Lease Expires . . . . . . . . . . : Wednesday, March 29, 2006 9:38:16 PM When the IP address, assigned by the DHCP server, lease expires it will attempt to lease you the same or another IP address. This function can typically be changed on the DHCP server. For instance, on some fully functional DHCP servers, you can configure the Lease to never expire, or to expire within 1 day and so on. Why Are MAC Addresses So Important And How Do They Work ------------------------------------------------------ To jump back to MAC address for just a bit. You may think that IP addresses are the most important thing when it comes to network communication. The reality is, MAC addresses are very important because without them computers would not be able to communicate over Ethernet networks. When a computer wants to speak with another computer on a local network, it will make a broadcast request, or ask a question, of who owns a particular IP address. For instance, your computer may say “Who is 192.168.0.254”. Using the information above, my default gateway is 192.168.0.254 and will answer “I am “00-90-4B-F1-6E-4A” 192.168.0.254”. It sends back its MAC address. That MAC address then goes into what is called a Address Resolution Protocol (ARP) table on your computer. You can see this information by going to the command prompt like you did above and typing "arp – a". You will get information like the following: Internet Address Physical Address Type 192.168.0.49 00-12-17-5c-a2-27 dynamic 192.168.0.109 00-12-17-5c-a2-27 dynamic 192.168.0.112 00-0c-76-93-94-b2 dynamic 192.168.0.254 00-0e-2e-2e-15-61 dynamic How A Hacker Can Use MAC Addresses In An Attack ---------------------------------------------- You will notice the IP addresses and to the right of them the MAC addresses. Without this information, without the MAC address, you would not be reading this article right now. MAC addresses are not routable like IP addresses. They work on your local or private network. However, devices on the Internet perform the same tasks. Routers and switches maintain a list of their peer devices MAC address just like your computers and devices on your home or office network. I mentioned above that MAC addresses can be changed in order to redirect requests. For instance, if I were on your office network and you had an internal web server that took personal information as input, I could tell your computer to go to my laptop for the web site by broadcasting my MAC address tied to the real web servers IP address. I would do this when you computer asked “Who is the “Real Web Server””. I could setup a fake web server that looks just like the real thing, and start collecting information the real web server would normally collect. You can see how dangerous this can be. Conclusion ----------- There are several other easy ways you can find your MAC address but they can be a little confusing if you have more than one internal network card. Most external USB, or PCMCIA wired and wireless Ethernet cards have their MAC address printed on them. In cases where the wired or wireless network card are inside your computer, such as in laptops, the MAC address is sometimes printed on the bottom of the laptop. Even Desktop systems cards that are inserted in PCI slots have the MAC address printed on the Ethernet card. You may reprint or publish this article free of charge as long as the bylines are included. Original URL (The Web version of the article) ------------ defendingthenet/NewsLetters/FindingYourMACAddressOnWiredAndWirelessNetworkCards. htm About The Author ---------------- Darren Miller is an Information Security Consultant with over seventeen years experience. He has written many technology & security articles, some of which have been published in nationally circulated magazines & periodicals. If you would like to contact Darren you can e-mail him at Darren. [email protected] If you would like to know more about computer security please visit us at defendingthenet.

         
    How a computer consulting business can help your company

     

    While many small companies only call in a local computer consulting business when something computer-related breaks, there's a lot to be gained by forging a proactive, long-term relationship with a local computer consulting business in your area. Consider Getting Advice from a Computer Consulting Business If you need to get advice once-in-a-while on how your computers can be better utilized, or you have a specific computer-related problem that needs to be solved, a computer consulting business is generally the way to go. However, if computer-systems and information technology (IT) are really important to your industry and your company, outsourcing your computer-related service needs to a local computer consulting business is often a much better solution than just piecemeal, ad-hoc usage of a computer consulting business. Hiring a Computer Consultant Many computer consulting businesses choose to specialize and end up becoming extremely valuable to their particular area or niche. In many cases, these kinds of computer consulting businesses can know almost as much about your industry and competitive challenges as you do. So to help your company grow and to make sure it's not being short-sighted with its computer-related needs, consider getting advice from a computer consulting business. Wearing Lots of “Hats” is Fine… But Don't Let These “Hats” Blind-Sight You Sometimes small companies already have an idea of what their computer-related needs are when they enlist the help of an outside computer consulting business. There are several advantages to bringing in an outside computer consulting business, as opposed to trying to limp along with someone internally who just wears the “hat” of the occasional computer person. One of the most important reasons to bring in a computer consulting business though is that a computer consultant is someone who is an expert in his or her field. This means you can have access to an expert for a fraction of the cost it would take to hire that caliber of professional on a full time basis. In almost all cases, a computer consultant like this can troubleshoot problem much faster and much more effectively than your internal employees. A Fresh Computer Consultant Perspective A computer consultant or computer consulting business can also being in a fresh perspective to your company. It's often really helpful to have a fresh set of eyes to look at your company and its IT infrastructure. Over time, non-technical small business owners and managers have a tendency to see the same things within their own companies. A good computer consultant or computer consulting business brings a new and fresh perspective into your situation and can help you truly visualize the forest through the trees. How Computer Consulting Businesses Help A good computer consulting business or computer consultant is prepared to do any number of things to help your company make the most out of any business or technology challenge it faces. This may include personal coaching, training for small and large groups of employees, and leading strategy-planning meetings with key people… almost as if that computer consultant were your part-time chief information officer (CIO). The best computer consultants will not enter into your company with a preset plan, but rather will tailor a plan according to the specific needs of your company. A good computer consulting business will have computer consultants on their staff who can quickly find out what the needs of your company are and then come up with cost-effective solutions. The Bottom Line In this article, you've been introduced to the basics of why to hire a computer consulting business and what computer consulting businesses can do for your company. Copyright MMI-MMVI, ComputerConsultingSecrets, All Worldwide Rights Reserved. {Attention Publishers: Live hyperlink in author resource box required for copyright compliance}

         
     
         
    Essay Service
  • Essay Home Family
  • Essay Home Improvement
  • Essay Home Security
  • Essay Horse racing
  • Essay Hosting
  • Essay Humanities
  • Essay Humor
  • Essay Hunting
  • Essay Hybrid car
  • Essay Hypoallergenic dogs
  • Essay Improve personal life
  • Essay Innovation
  • Essay Inspirational
  • Essay Insurance
  • Essay Interior Design
  • Essay International Airports
  • Essay Internet security
  • Essay Internet Marketing
  • Essay Internet Business
  • Essays Internet Marketing
  • Essay Investing
  • Essay Investment Basics
  • Essay Ipod Video
  • Essay Ireland golf vacation
  • Essay Jewelry
  • Essay Jewelry Wholesale
  • Essay Job Search
  • Essay Junior golf
  • Essay K 12 Education
  • Essay Kitchen
  • Essay Kitchen Remodeling
  • Essays Kitchen Remodeling
  • Essay Koi
  • Essay La Jolla California
  • Essay Landscaping
  • Essay Language
  • Essay Las Vegas
  • Essay Law
  • Essay Leadership
  • Essay Leasing
  • Essay Legal
  • Essay Leukemia
  • Essay Loans
  • Essay Low cholesterol
  • Essay Making Money With Articles
  • Essay Male menopause
  • Essay Management
  • Essay Marketing
  • Essay Marketing PLR
  • Essay Marketing Your Business On The Internet
  • Essay Marriage
  • Essay Martial Arts
  • Essays Martial Arts
  • Essay Writing Martial Arts
  • Essay Medicine
  • Essay Meditation
  • Essay Membership Sites
  • Essay Men s Issues
  • Essay Mesothelioma
  • Essay Mexico Vacations
  • Essay Microbrews
  • Essay Mini Blinds or Wood Shutters
  • Essay MLM
  • Essay Mobile A V
  • Essay Mobility scooters
  • Essay Monograms
  • Essay Mortgage
  • Essay Motivation
  • Essay Motor Homes
  • Essay Motorcycles
  • Essay Motorcycles and Scooters
  • Essay Mountain Biking
  • Essay Movies
  • Essay Movie Reviews
  • Essay Moving
  • Essay Moving overseas
  • Essay Movinghouse
  • Essay Multiple Sclerosis
  • Essay Muscle Building
  • Essay Music
  • Essay Music Reviews
  • Essay Mutual Funds
  • Essay Myspace
  • Essay Networking
  • Essay Networks
  • Essay New Air Travel Rules
  • Essay New Years Eve Party Planning
  • Essay New York
  • Essays New York
  • Essay NewAirTravelRules
  • Essay Newport Beach
  • Essay New Years Eve Party Planning
  • Essay Niche Marketing
  • Essay Nursing Assistant
  • Essay Nutrition
  • Essay Office Chairs
  • Essay Online Dating General
  • Essay Online Dating Man
  • Essay Online Dating Woman
  • Essay Online Shopping
  • Essay Opt In List
  • Essays Opt In List
  • Essay Organizing
  • Essay Outdoors
  • Essay Outsourcing
  • Essay Outsourcing Ebooks and Software Jobs
  • Essay Ovarian Cancer
  • Essay Paint Ball
  • Essay Parenting
  • Essay Parentingskills
  • Essay Paris
  • Essay Personal Loans
  • Essay Personal Finance
  • Essay Pet health care
  • Essay Pets
  • Essay PH Miracle Diet
  • Essay Philosophy
  • Essay Photography
  • Essay Playstation3
  • Essay PLC AffiliateMarketing
  • Essay Podcasting
  • Essay Podcasts
  • Essay Poetry
  • Essay Politics
  • Essay Politics Commentary
  • Essay Politics Current Events
  • Essay Politics History
  • Essay Pool Accessories
  • Essay Porsche
  • Essay Power Tools
  • Essay PPC
  • Essay PPC Advertising
  • Essay Pre Paid Legal
  • Essay Pregnancy
  • Essay Private Jet Charters
  • Essay Private Label Resell Rights
  • Essay Private Yacht Charters
  • Essay Private investigation
  • Essays Private Label Resell Rights
  • Essay Product Reviews
  • Essay Prostate Cancer
  • Essay Psychology
  • Essay Public Relations
  • Essay Public Speaking
  • Essay Rawfood
  • Essay RC Hobbies
  • Essay Rc car
  • Essay Re Financing
  • Essay Real Estate
  • Essay Real Estatearticles
  • Essay Real Estate
  • Essay Recipes
  • Essay Recreation Sports
  • Essay Reference
  • Essay Reference Education
  • Essay Relationships
  • Essay Religion
  • Essay Remote control helicopters
  • Essay Renting A House Or Apartment
  • Essay Retirement Planning
  • Essay RSS
  • Essay Running
  • Essay RVs
  • Essay Sales
  • Essay San Diego
  • Essay San Fransisco
  • Essay Satellite Radio
  • Essay Science
  • Essay Scotch
  • Essay Seattle
  • Essay Security
  • Essay Self Improvement Articles
  • Essay Self Help
  • Essay Self Improvement
  • Essays Self Improvement
  • Essay Sell Your House
  • Essay SEO
  • Essay Sexuality
  • Essay Shoes
  • Essay Show Business
  • Essay Site Promotion
  • Essay Ski vacations
  • Essay Skiing Locations
  • Essay Skincare
  • Essay Skin Cancer
  • Essay Sk Vacations
  • Essay Sleepingbaby
  • Essay Small Business
  • Essay Snoring
  • Essay Snoring remedy
  • Essay Snowboarding
  • Essay Snowmobiling
  • Essay Social Networking
  • Essay Society
  • Essay Sociology
  • Essay Software
  • Essay Spam
  • Essay Spirituality
  • Essay Sports
  • Essay Sports Car
  • Essay Sports coaching articles
  • Essay St. Thomas Vacations
  • Essay Stock Market
  • Essay Stress Management
  • Essays St Thomas Vacations
  • Essay Success
  • Essay Summer Vacations
  • Essay Supercross Racing
  • Essay Supplements
  • Essay Surround Sound
  • Essay Swimming Pools
  • Essay Tattoos
  • Essay Tax attorney
  • Essay Taxes
  • Essay Tech gadgets
  • Essay Teeth whitening
  • Essay Tennis
  • Essay Terrier dogs
  • Essay Thanksgiving Party Articles
  • Essay Theater Arts
  • Essay Time Share Investments
  • Essay Time Management
  • Essay Toothache and Tooth Care
  • Essay Top Golfing Accessories
  • Essay Tracking Software
  • Essay Trafficand SEO
  • Essay Traffic Generation
  • Essay Travel Tips To European Countries
  • Essay Travel Leisure
  • Essay Travel Tips
  • Essay Trucks SUVS
  • Essay Universal Studio Tours
  • Essay Vacations
  • Essay Vacuum Cleaners
  • Essay Valentines Day
  • Essay Vehicles
  • Essay Video Sites
  • Essay Video streaming
  • Essay VideoSites
  • Essay Vitamins
  • Essay Vitamins and Supplements
  • Essay WAHM
  • Essay Wart Removal
  • Essay Wealth Building
  • Essay Weather
  • Essay Web Design
  • Essay Web Traffic
  • Essay Web Design
  • Essay Web Development
  • Essay Web Hosting
  • Essay Wedding Favors
  • Essay Wedding Games Activities
  • Essay Weddings
  • Essay Weight Loss
  • Essays Weight Loss
  • Essay Wine
  • Essay Wine And Spirits
  • Essay Women s Issues
  • Essay Writing
  • Essay Writing Speaking
  • Essay YEAR OF CONTENT
  • Essay Yoga
  • Essay YouTube
  •  
    Free Essay
    easy essay on the topic of Demonitisation | anything | essay on importance of demonitisation | write a paragraph on demonitisation | paragrapha on demonitisation | Demonitisation eassy word easy | a short paragraph on demonitisation | paragraph of demonitisation | argumentative essay on demonitisation | short paragraph on demonitisation | demonitisation eassy | demonetisation drive eassy point to point | fullopin tube kise kahte h | Essay on demonitisation for college student | eassy on demonitisation | short eassy on demonitisation | college essay about "demonitisation" | bhujangasan eassy | steroid hormones kise khte hai? | Demonitisation short paragraph | car danting kise kahte hai | demonitisation and student life essay | Gzhel pottery | hamilton coach dynamics wealth mbti types | the rain water damage the wall essay | demonitisation essay | dating | paragraph on demonitisation | cytomel | essay on gardening grooms the personality
     

     

     

     

     

     

     

     
     
     
      Free Essay Archive BloguinHos