Users of telnet, rlogin, ftp, and other connectivity programs may not realize that their password and data is transmitted across the network unencrypted and can be intercepted by hackers.
Use of these "clear text" protocols is therefore strongly discouraged. The use of the secure shell protocol ("SSH"), which encrypts transmitted data including user IDs and passwords is recommended.
More information about SSH is available in the Safe Computing for Students and Safe Computing for Faculty and Staff sections.