Internet offers, in addition to its most popular services (email, navigation) lesser-known alternatives, such as Telnet.
Before the www make possible the “navigation chart” Internet-connected computers only understand “script” to a DOS or UNIX. Telnet was and is one of the ways to connect to another computer and run it these commands. In fact predates Telnet internet is used computer-computer, i.e., direct call through the computer terminal to the host computer, while normal today is run across the internet, by the common protocol IP /TCP.
The advent of graphical navigation Telnet has relegated most restricted uses, usually associated with remote management of equipment or highly specialized consulting resources (libraries, BBS, Archie, databases). However, there are interesting resources which can only be accessed by Telnet.
Program need for Telnet
The Telnet program for windows terminal simulators consist of UNIX. Windows provides a program of this kind: simply open a DOS session and type telnet (or if you own the latest versions of communicator or iexplorer, type in the address bar telnet: / / server name).
What is to get after connecting to another pc via telnet is to pretend that your keyboard and your screen is physically connected to that computer, i.e., it may be operating with a computer in the house as if you were on you computer at work, visiting their same resources, according to the permissions available to you.
As your computer acts as a simple terminal, you must remember that once connected, the commands to use are the same as you would use to be against that remote computer: DOS commands (there are servers with this system), but the overwhelming majority of UNIX-system commands OS installed on most web servers own commands, or program you run via telnet (mysql, PINE, SENDMAIL, etc)
When you make your first telnet connection, check at times you can not see in your terminal the letters you type, this is because this particular telnet service does not return your letters written, To resolve this problem we have to order the program to send an echo local; how do you use depends on the program, in Easyterm is as simple as clicking the icon with an ear drawn.
You must insist that when you run telnet leave the comfortable world of graphic windows and spent the UNIX realm. UNIX is powerful, but requires precision. Note, for example, that the same word in upper or lower case has a different meaning.
With telnet you can access thousands of remote computers, establishing a direct connection with them. Today it is normal telnet connections are made via the Internet, using port 23. Normally, once connected (login) the remote computer (host) we ask for a username and password to execute commands, but there are many computers that offer resources for anonymous visitors, which we access as guests, not keyword .
The typical way to begin is to seek the order connect, a window indicate the host you want to connect and port connection (telnet port 23 by default, but one machine can be running telnet different services, each for a different port, such as pop3 or smtp)
If all goes well and the remote computer allows access to telnet, the program will indicate that the connection was successful. Then you have to identify to the remote system (login) by you user name and password. Normally the remote computer itself is calling you asking for user data and password, but sometimes the terminal just shows that you are connected, so you enter the data without assistance, usually by typing user and password.