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Telnet is a terminal (console) emulator, which allows you to access the server (Pisces) your account is hosted on remotely. In addition to providing Telnet access, Preston Company also supports SSH1 and SSH2 as well. Unlike Telnet, SSH1 and SSH2 both provide strong authentication and secure communications over unsecure channels, and it is intended as a replacement for Telnet. Therefore, we strongly recommend the use of SSH over Telnet on your account. The advantages to SSH version 1 and version 2 over Telnet also includes the inability of interception of cleartext passwords and other data by intermediate hosts. The difference between SSH1 and SSH2 is they are two entirely different protocols. SSH1 and SSH2 encrypt at different parts of the data packets, and SSH1 uses server and host keys to authenticate systems where SSH2 only uses host keys. SSH2 is a complete rewrite of the protocol, and it does not use the same networking implementation that SSH1 does. Finally, SSH2 is more secure. In a nutshell, SSH2 is a rewrite of the SSH1 protocol, with improvements to security, performance, and portability. In order to use Telnet, SSH1 and/or SSH2, you will need a client software application. Think of Telnet and SSH as the protocol (it is) rather than the application, just like FTP, it requires a software program to use the application. For information on recommended software applications for use of Telnet and SSH, click here. |