Telnet

Telnet is a command-line tool that provides access to a command-line interface on a remote host. As it uses Transmission Control Protocol (TCP), it may also be used to test TCP connectivity with a remote host. Because of serious security concerns when using Telnet over an open network such as the Internet, its use for this purpose has waned significantly in favor of SSH. The following activities will show you how to use Telnet.

Readings

 * 1)  Telnet
 * 2)  netcat

Lessons

 * 1)  Internet Protocol Analysis - Transport Layer

Activities

 * 1)  Install the Telnet Client (Windows)
 * 2)  Test an HTTP Connection
 * 3)  Test an SMTP Connection