|
|
| Buffalo NY Broadband Internet Information |
|
|
|
|
ICMP Protocol - Internet Control Message Protocol
The Internet Control Message Protocol communicates errors messages between systems that require attention. This error is not usually at the user level, the error is handled by the application layer. In the OSI Reference model, ICMPs are generally considered part of the IP layer. To put to plain and simple, ICMP messages are sent "behind the scenes" to your applications to tell them if there is a problem with the connection or transfer of data. These messages tell your application to change what they are doing, change how they are sending and basically give them an error code on how they can successfully fix their problems. ICMPs' are sent in a standard IP datagram, this datagram contains an IP header of twenty (20) bytes and then the ICMP message. There are fifteen values for the type field of the datagram which identifies the type of ICMP message. The "code" portion of the datagram specifies the condition of the "type" even further. This sounds a bit confusing at first, but you have two major categories, the primary "problem," and then a secondary more in depth look at that problem. This will all make more sense when you look at information below. Type 0, code 0 - echo reply Type 3 (destination unreachable) Type 4, code 0 - source quench Type 5 (redirects) Type 8, code 0 - echo request Type 9, code 0 - router advertisement Type 10, code 0 - router solicitation Type 11 (time exceeded) Type 12 (parameter problem) Type 14, code 0 - timestamp reply Type 15, code 0 - information request Type 16, code 0 - information reply Type 17, code 0 - address mask request Type 18, code 0 - address mask reply As you can see from the above information, the primary "type" groups are the main problem, with the "code" further specifying the problem. Much of this stuff doesn't make sense to the human end-user anyway, but it means a lot to the software developers who use these requests to fix problems in their coding. ICMP's are a nice behind the scenes helper that are good to have their, but be thankful you don't really have to deal with them. For even more detailed information on the Internet Control Message Protocol (ICMP) the protocol is defined in RFC 792. Ken Dennis
|
|
|
|
RELATED ARTICLES
Broadband Broadband is the name given to a high-speed Internet connection that provide large bandwidth. It is a quick connection, typically "always-on" and capable of transmitting data at a much faster rate than a standard dialup modem connection. Broadband also won't tie up your phone line, allowing you to use the internet and telephone simultaneously. Broadband can be provided from a dedicated line such as Cable or ISDN, or over the top of your phone line such as ADSL. Long Arm of the Law Reaches New Internet (RIAA, Internet-2, i2hub Lawsuit) Have you heard of the new Internet? It's called Internet 2 and this time they're not fooling around. The Abilene Network , begun in 1999 provides the main backbone and they're a pure optical network wired for speed. Broadband is State-of-the-Art Internet Access: How Can a Broadband Cable Benefit You? We are now well ensconced in a time when the Web is riddled with graphics, animations, sounds, and videos, bringing about a necessity for superior internet access such as that which broadband can provide. The fact is that anything less than the speed supplied by a broadband cable has become inadequate for today's Web users. Beta Testing First Mobile Internet Satellite Broadband, Part I Being on the road has its advantages; the freedom is the biggest one. One draw back was the Internet Service, but having done much study on the mobile Internet Satellite Systems and future technologies; I was able to become a beta tester of the MotoSat system in 1999. I have used the system ever sense. Why Choose Dial Up ISP Services Dial up ISP service is the cheapest choice of any of the ISPs and may be a good option for that family on a tight budget. The software upgrades have definitely increased the speed of dial up ISPs, but their speed is still slower than some other options. Dial up ISP service can be purchased from several different companies including Earthlink, AOL, Juno, and others. Wifi Hotspot Locations for Sale..is that a Good Thing? Recent companies have been advertising wifi hotspot locations that are 'turnkey' (they can run themselves), and only cost between $13,000 and $20,000 to start. Is that good? Remotely Connecting by Satellite To the Hospital - 2005 Hospital's and the Medical Professionals associated with them across America have discovered during the last few years that a great deal of efficiency can be accomplished by utilizing the World Wide Web to connect Doctors, Surgeons, Medical Transcribers and remote or mobile Clinics together. A specialist can instantly review an X-Ray or medical chart half way around the world or from a very remote area. Although most of this connectivity is accomplished utilizing high speed terrestrial internet connections like a T1, Cable or DSL connections, there are many areas in the U.S. where this type of internet connection isn't available. Google Brings Millions of Hard-to-Find Library Books to Your Fingertips Millions of hard-to-find books from five major libraries will soon be a lot easier to access: Google has made plans to scan and digitize them, making the books available on their widely used Internet search engine. Bleeding Edge or Expensive Enterprise Satellite Internet? The State of Satellite Internet in 2005 What is Broadband? Defining broadband can get complicated ICMP Protocol - Internet Control Message Protocol The Internet Control Message Protocol communicates errors messages between systems that require attention. This error is not usually at the user level, the error is handled by the application layer. In the OSI Reference model, ICMPs are generally considered part of the IP layer. Dreams Come True With The Help Of Global Consciousness On The Internet Dreams. There are two types of dreams: 1. When you are sleeping there are stories unfolding in your mind from a parallel dimension. 2. The aims one has in life. The latter is the type of dream I wish to discuss. We all have these dreams, don't we? We picture ourselves in the future having realized our talents, having achieved in the areas that interest us most. Your dream may have been a relatively simple one, like reaching enlightenment, or helping to create world peace! Maybe your dream was just to set foot on as many beaches across the planet as possible, a little selfish-but hey, you're still sharing a smile everywhere you go. In this the Information Age, our dreams have become more realistic and practical to attain. With the Internet and web sites in particular, a global consciousness is forming to help all people towards their goals. How to Secure your DSl / Cable Internet Connection Against Malicious Attacks Securing your Windows Xp computer is done by achieving two main tasks. Cheap Internet Access For anyone trying to get the cheapest internet available, there are tons of options available. Some providers offer completely free service. But the trade-off is permanent pop ups along the bottom of your desktop, or other advertiser gimmicks that may inhibit your Internet experience. Its On! (Free Internet TV - Watch TV Online) Get ready because "there's going to be television out the wazoo!" This according to Jonathan Klein, the president of CNN - U.S. operations in a USA Today story on the merger of the Internet and television. Major broadcast networks, cable networks, and content providers are gearing up for the 'mother of all media battles' in staking out territory on the new and rising medium called "Internet TV". Basically it's video online, which is not new, but what is new is that the major networks are now getting fully involved. Klein continued, "It will be pausable, searchable, with all the customizable 'on demand' advantages of the Internet. It's a future that's not very far away" Klein did not elaborate on how long it will take, what a 'wazoo' is, or how a television would fit through it. How Peer to Peer (P2P) Works Peer to Peer (P2P) Technology- How it works: Searching for the Right ISP When searching for the right ISP there are a number of items to look at. How much is it going to cost me? What is the connection like? What are the Features? Is it available in my area? You will soon find that there are many ISP's to choose from. So, it is beneficial for you to pick the right internet service provider. A Cheap Alternative To Broadband? Are you a dial-up user looking for a faster connection, but don't like Broadband prices? If so, you should take a look at a new service called OnSpeed, which has received rave reviews in Internet technology publications. How to Test Your DSL and Cable Internet Connection Speed There are two measured elements that determine your internet connection speed. They are: The download rate, and the upload rate of data measured in bits per seconds. Usually, it is expressed in Kilobits per second. Finger Protocol - TCP/IP Suite The "finger" protocol is used to return information on users on a specific host. Information that can be gained by using the finger is to see if someone is actively logged on to a server, or find a valid username. The finger protocol is far less prevalent now than it once was due to some problems with the protocol. Back in 1988 an Internet worm exploited an error in the protocol, and additional it was used by mischievous people to find information about server users. Finger had the potential to provide one of these mischievous users with information such as login name, phone number, and the last time the user had logged on to the system.
|
| home | site map |
| © 2020 |