TELNET AND FILE TRANSFER PROTOCOL WITH DIAGRAM

TELNET:

TELNET service enables an internet users to log into another computer on the internet from his/her local computer. That is, a user can execute the telnet command on his/her local computer to start a login session on a remote computer. This action is also called remote login.

Client-Server Interaction in telnet

HOW TO USE TELNET:

1. TO START we need to know the internet name( or the numeric ip address) of the machine you want to log into.
2. To enter, type the command telnet followed by the machine name or ip address.
3. Then system asks the user to enter a login name (user id) and a password. Once login session is established then anything type in terminal of local computer by the user is sent to remote computer for processing.
4. Log out when you finished.

FILE TRANSFER PROTOCOL:

• FTP (File Transfer Protocol) is the simplest and most secure way to exchange files over the Internet. A FILE MAY CONTAIN any type of digital information – text document, image, art work, movie, sound software etc. Transferring files from a client computer to a server computer is called "uploading" and transferring from a server to a client is "downloading. To access an FTP server, users must be able to connect to the Internet or an intranet (via a modem or local area network) with an FTP client program.
• FTP doesn’t not really move files , it copies files from one computer to another
• To access an FTP server, users must be able to connect to the Internet or an intranet (via a modem or local area network) with an FTP client program.
  
  
  
  
  
  
  
  
  BY USING FTP SERVICE, A FILE TRASFER TAKES PALACE IN A FOLLOWING MANNER:
  1. A USER EXECUTES THE ftp command on his/her local computer, specifying adderess of the remote computer.
  2. A ftp client stablishes a connection with an ftp server.
  3. Then system ask to user for login on the remote computer .
  4. After successful login desired files are downloaded or uploaded by using GET or PUT command.
  5. Log out when you finished.