Important protocols in the tcp ip protocol family

For the Internet, various protocols are used to regulate its usage, so that this large and complex network can work in an orderly manner. In this protocol structure, the tcp ip protocol family is the foundation. What protocols are included in this structure? In order to allow readers to fully understand some basic network communication protocols and services, this section briefly describes several main protocols included in the tcp ip protocol family ｡

◆ Remote logon protocol (Telnet)

Telnet is used to log on to a remote computer and access information. It can access all databases, online games, conversation services, and bulletin boards, it works in the same room as the accessed computer, but only supports character-class operations and sessions ｡

◆ File Transfer Protocol (Ftp)

This is the basic protocol for file transfer. With the FTP protocol, you can upload files and obtain many applications and information (downloads) from the Internet ), many software sites provide users with download tasks through the FTP protocol, commonly known as "FTP servers". The original FTP program was running on UNIX systems, currently, many FTP programs work in Windows. In addition to transferring files, FTP allows users to establish connections with remote computers and log on to remote computers, and can be moved between directories on the remote computer ｡

◆ Email service)

Email Service is currently the most common and widely used online service, it can exchange information with anyone on the Internet. The fast, efficient, convenient, and inexpensive email has been widely used, currently, Internet users have certainly used email services. At present, there are tens of millions of emails sent online on average every day ｡

◆ WWW Service

WWW Service (service) is also one of the most widely used basic Internet applications, which we use every day for Internet access, it can be anywhere in the world. Because the WWW Service uses hypertext links (HTML ), therefore, you can easily switch from one information page to another. It can not only view text, you can also enjoy pictures, music, and animation. The most popular WWW Service Program is Microsoft's IE browser ｡

◆ Simple Mail Transfer Protocol (SMTP)

SMTP is a member of the TCP/IP protocol family. This Protocol assumes that your computer is permanently connected to the Internet, in addition, you think that your computer on the network can be accessed at any time. It applies to computers that are permanently connected to the Internet, however, users connected through the SLIP/PPP protocol cannot receive emails. The solution to this problem is to run the SMTP and POP protocol programs on the mail computer at the same time, SMTP is responsible for sending mails and sorting and storage on the mail computer, and POP protocol is responsible for transmitting mails to the user computer through the SLIP/PPP protocol connection ｡

◆ Information Service (Gopher)

Gopher was first introduced in 1991. It is the first simple and widely used client application to obtain information from Internet servers, the Gopher runtime displays an interactive menu for users to choose. The options in the menu are composed of simple short sentences, and each short sentence usually points to another menu, and finally point to useful files. Gopher is a navigator that helps users search for useful information in the Internet Information Ocean. Users only need to care about the browsing content, rather than the specific server ｡

◆ File Retrieval Service (Archie)

It is a service for obtaining files from anonymous FTP servers on the Internet. It relies entirely on anonymous FTP system administrators who have registered the sites on Archie servers around the world, archie only searches by file name ｡

I have listed many protocols related to the TCP/IP protocol family. I don't know what you know. In any case, there are a wide variety of Internet protocols. In a simple operation we use, many protocols may also be used. I hope you will learn more in the future.