Networking / Beginners

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SSH and the Death of Telnet

Telnet has seen long and heavy use in the TCP world from the earliest days of the Internet, but it suffers from lack of any security. Telnet passwords as well as data are transmitted in clear text and are thus easily hacked. To that end, SSH has now replaced Telnet for any serious terminal emulation. In terms of what it does, SSH is extremely similar to Telnet in that it creates a terminal connection to a remote host. Every aspect of SSH, however, including both login and data transmittal, is encrypted. SSH also uses TCP port 22 instead of Telnet's port 23.

TIP SSH enables you to control a remote computer from a local computer over a network, just like Telnet. Unlike Telnet, SSH enables you to do it securely!