Restrict Telnet Access

[liang_mike]

I have a server with many user accounts. Is there a way to block their telnet access? So that they will not be able to telnet into the server.

Thanks.

[jamesConf]

would not running the telnet server work?

anyway you know that telnet will send everything in clear text, if this is an external computer it would be easy for someone the get user names and passwords(it happend to me once)

but anyway set their accounts shell to /dev/null. This makes it imposable for that user to get a command line on the server.
ftp will work just fine.