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Web Hosting - DNS, How The Internet Keeps Track of Names
The way computers communicate is, in a way, very similar to something very familiar: the postal system that delivers letters and packages. Here's how...
The Internet is just what the name suggests, a large inter-connected set of networks. But those networks are pointless without the one part that forms what is called their 'end-nodes', otherwise known as computers. Those computers often need to share information because the people who use them want to share information.
But, in a system where there are millions of separate computers, how can you enable them all to communicate? One very important feature of that solution is performed by something called DNS, the Domain Name System.
Every part of a network that is going to send or receive information is assigned an IP address. That's a numeric identifier that uniquely specifies a particular 'node', such as a computer, a router that directs traffic or other component. They look like this: 209.131.36.158
But those numbers are more difficult for people to remember and work with. They also aren't very attractive from a marketing perspective. So, a naming system was layered on top of some of them, mostly the computers involved, though routers have names, too.
But once you have a system that associates a unique IP address to a given name, you need some way of keeping track of all of them. That's carried out by several different pieces of the system: Name Registrars, DNS Servers and other components.
The Name Registrars, overseen by IANA (Internet Assigned Numbers Authority) and other international bodies, provide and keep track of domain names. When you register with GoDaddy or any of a hundred other intermediate companies, ultimately that information makes its way into a number of specialized databases stored inside DNS Servers.
A DNS Server is the hardware and/or software that tracks and forwards the IP Address/Domain Name pair from one place to the next. In many cases, there are a number of them between your browser and the remote computer you want to share information with.
Suppose you request information from, say, Yahoo's site by clicking on a link on their site. DNS resolves (translates) the name of WHO IS making the request and OF WHOM, to addresses, then passes the request through the network to the requested IP address. The requested data is then passed back through the mesh of network components to your computer and displayed in your browser.
Whether the communication is between a desktop computer and a server somewhere, or between one server and another, the process is essentially the same. DNS servers translate names into IP addresses and the requests for data are forwarded on.
In some cases those DNS servers are part of a specialized network computer whose sole job is to do the translation and forwarding. In other cases the DNS software may reside on a server that also houses a database of general data, or stores email, or performs other functions.
But however complicated the chain or the parts, the basic process is simple. Translate the name to an address, just as the postal system does. Whether international or local, your name is associated with an address, and the deliveries are made to the address, then forwarded to a particular name.
Movie Copyright Law College Students Are Being Targeted For Breaking Movie Copyright Law Many people have taken up the hobby of downloading movies and songs on the Internet and sharing them with their friends and family online. However, this is direct violation of the movie copyright law. Not surprisingly, the biggest violators of the movie copyright law are students. It is not surprising that the movie industry sector is sending out copyright infringements claims to college universities around the country. One reason that college students may be the hardest hit when it comes to violations brought against them for infringing on movie copyright law is that they are not aware of how serious a crime it truly it. Many college students who have suits brought against them are shocked, to say the least. They question why they were not warned about the perils of downloading movies and songs online and passing them along to friends. However, with the rise of claims that are being handed down, no one can claim ignorance for much longer. Word is being spread near and far that if you are engaging in illegal downloading and/or sharing then you can be brought to court. College students are learning the hard way that it is against the law and in violation of the movie copyright law to share or download copyrighted material. Many colleges and universities are now stating in their handbooks that it is against the law and the university rules to illegally download movies, music and other forms of media online using a school computer. In addition to illegal downloading and sharing software, the files take up space on the computer systems and use a considerable amount of bandwidth. While most universities and colleges will not look at the content an individual has -- they can isolate and identify the individuals who are hogging up the bandwidth by using illegal file sharing software. The movie and music industries have stepped in and are demanding restitution for illegally downloaded movies, music and other forms of copyrighted media. They have detection agencies that have the technology to identify and trace copyright infringements straight to their source. Once the computer is located they can notify the university or the college that they are in violation. The university will be told that they have a copyright infringement claim against them. Based on the Digital Millennium Copyright Act once the computer is isolated Internet access is terminated to that computer and court proceedings can begin. Does this sound far fetched? Well, it is not. You should know that in April of 2003 four students were sued by Recording Industry Association of America. These students attended Princeton, Michigan Technical University and Rensselear Polytechnic Institute. One student alone had an estimated liability of $150 billion. When you consider that you can be charged $750 per song that is illegally downloaded, the total can add up fast! The good thing is the lawsuits against the college students were settled for amounts less than $20,000. That is not pocket change for college students – or anyone for that matter! Movies and music are meant to be enjoyed. However, illegally downloading movies and music is not much different than walking into a video store and sticking DVDs and CDs in your pocket. Be careful. You do not want to be caught violating the movie copyright law. Self-Publishing and Other Options Online (how to get a book published online) There’s no question about it. There is more room for more types of writing on the internet. Many people know that getting a book published for the book store shelves is next to impossible. The competition is overwhelming. Most successful writers have already achieved fame and so are able to write book after book. The unknown, though still talented writers are shut out. Publishing books is expensive and time consuming. There are only so many readers in the world. To keep the ratios between writers and readers comfortable, less than one percent of would be writers actually get published. That is all changing now. The internet is big enough for everyone it seems. It offers many more, less expensive publishing opportunities. It also gives exposure to aspiring writers allowing them more chances to impress the hard copy publishers. So, the opportunities are there. Do you want to know how to get a book published online? Is Self-Publishing Cheating? Self-publishing is certainly not cheating. Depending on what your goals are of course, it may or may not be a direction you would like to take. In the hard copy world, self-publishing is cost prohibitive. Actually getting a book into print costs more money than a typically poor beginning writer can muster. That is the great thing about the internet. It’s free. You can either start up a free website of your own and post your novel, or pay a small monthly sum and attempt to sell your writing online. By paying for a website you will be allowed to sell a product from that site. If you can write well enough to catch someone’s attention, they may be willing to pay for a download of your book. That is how to get a book published online. Just do it yourself. You circumvent the normal book publishing costs and still get some exposure. You just may luck out and get the attention of someone who thinks you could make money off of your writing. If you’d really like to hurry up the process to getting your books in print, there is another route to go. Pay to Be Published Everything is cheaper when done ‘en masse’. There are book publishers that reduce the cost of publishing by running the presses all of the time. If you’d like to know about another way of how to get a book published online, this is it. With publishing companies though, you don’t have to dream about getting your book on the shelves. The online self-publishing companies require a fee – which will be much less than if you were to try to print yourself. They use your money to get your writing into print. You have the option of publishing your own book, or for a much smaller investment, to be included in an anthology. You won’t get as much exposure as from a big name publishing company, but it will be significant nonetheless. E-Book Publishers A third road to travel if you’re wondering how to get a book published online is that of e-books. They are another form of writing that can get you the practice and exposure that you need. Instead of writing on a topic of your choice though, e-book assignments are centered on topics that a typical person will search for online. They are normally informative and how-to books. They are usually short and to the point. E-book publishers are willing to pay experienced and capable writers to create book length, researched writing. How about adding that to your resume? Publishing a book online is easier than publishing in the world of hard copy. The end result is not as glorified, but it is a step towards success in the published realm. The more experience you can get writing, the better writer you will be. As the internet becomes more depended upon, you may find yourself on the frontline of the publishing movement. |