TCP/IP- The Rules That Rule The Net


TCP/IP- The Rules That Rule The Internet

Until now, we have seen security lapses and problem caused due to viruses. We looked into ways by which you can be infected and preventive measures for them. Now we start on a completely new journey. An exciting and thrilling one. Here onwards you are going to bear with me on the language aspect since it is bound to get technical. As far as possible, I will try to minimise it. But as they say, you cannot teach swimming without going into water. Today we will have a small introduction to TCP/IP.

What Is TCP/IP?

TCP/IP refers to two network protocols (or methods of data transport) used on the Internet. They are Transmission Control Protocol and Internet Protocol, respectively. These network protocols belong to a larger collection of protocols, or a protocol suite. These are collectively referred to as the TCP/IP suite. Protocols within the TCP/IP suite work together to provide data transport on the Internet. In other words, these protocols provide nearly all services available to today's Net surfer. Some of those services include

1.Transmission of electronic mail.

2.File transfers.

3.Usenet news delivery.

4.Access to the World Wide Web.

There are two classes of protocol within the TCP/IP suite. Those two classes are

1.The network-level protocol.

2.The application-level protocol.

Network-Level Protocols

Network-level protocols manage the discrete mechanics of data transfer. These protocols are typically invisible to the user and operate deep beneath the surface of the system. For example, the IP protocol provides packet delivery of the information sent between the user and remote machines. It does this based on a variety of information, most notably the IP address of the two machines. Based on this and other information, IP guarantees that the information will be routed to its intended destination. Throughout this process, IP interacts with other network-level protocols engaged in data transport. Short of using network utilities (perhaps a sniffer or other device that reads IP datagrams), the user will never see IP's work on the system.

Application-Level Protocols

Conversely, application-level protocols are visible to the user in some measure. For example, File Transfer Protocol (FTP) is visible to the user. The user requests a connection to another machine to transfer a file, the connection is established,

The copyright of the article TCP/IP- The Rules That Rule The Net in Internet Security is owned by Mayur Kamat. Permission to republish TCP/IP- The Rules That Rule The Net in print or online must be granted by the author in writing.

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