telnet

A form of connecting to a remote server and accessing files. It also enables the user to directly send commands as if they were being entered locally on the computer terminal. It is a common method for systems administrators to access and remotely control web servers.

A terminal emulation program for TCP/IP networks such as the Internet. The Telnet program runs on your computer and connects your PC to a server on the network. You can then enter commands through the Telnet program and they will be executed as if you were entering them directly on the server console. This enables you to control the server and communicate with other servers on the network. To start a Telnet session, you must log in to a server by entering a valid username and password. Telnet is a common way to remotely control Web servers. A Telnet command request looks like this (the computer name is made-up):

telnet the.libraryat.whatis.edu The result of this request would be an invitation to log on with a userid and a prompt for a password. If accepted, you would be logged on like any user who used this computer every day. Telnet is most likely to be used by program developers and anyone who has a need to use specific applications or data located at a particular [|host] computer.

Open a command prompt on your computer and connect to the mail server over port 25. Let's say your mail server is called smtp.example.com, then in Windows, you can do this from the command prompt by typing telnet smtp.example.com 25
 * Troubleshooting Email, The Telnet Way**

Type "helo me" and enter Then set the From and To addresses, type the following lines and enter separately: Mail from: myaddress@orcsweb.com Rcpt to: youraddress@orcsweb.com First type: "Data" and press enter

Next add the headers and body:

From: "Scott Forsyth"  To: "Your name"  Subject: This is a test message sent from telnet

Here is where the body goes. Notice that one blank line is required between the headers and the body of the email. Again, the three headers aren't required. They can be in any order and they aren't case sensitive either. You can also get away with just the email address there like so:

To end the Data / body, there needs to be a line with only a "." (period) on it, and then press enter. Like so: .

=Summary of telnet commands= code
 * To ...                          Do this ...**

Connect to a remote system      telnet> **open //remote_system_name//**

Suspend a telnet connection     **Ctrl ]** and return to the telnet prompt

Close a connection to a         **Ctrl ]** remote system                   telnet> **close** code


 * Suspend telnet and work on telnet>** z
 * the local system**

Resume the use of telnet prompt% **fg** telnet>

End the telnet session telnet> **quit**

To display a list of telnet telnet> **?** commands

To get an explanation of a telnet> **help** //name_of_command// command A simple example illustrating typical use: <