Those of you that do unix server admin work will realize that Jaguar (10.2) integrates a new telnet feature that many BSD user's have complained about, which is autologin. This can be disabled in two ways - read the rest of the article for the walkthrough.
The first method assumes your using bash shell /bin/bash:
if [ -f ~/.bashrc ]; thenNote there is a space between the period and the tilde within the "if" statement. This makes reference to a file called .bashrc, which is a good file to put aliases in.
. ~/.bashrc
fi
alias telnet='telnet -K'
DEFAULT set autologin offNote that this will be the default for all hosts telneted to. You can set this on a host by host basis by substituting DEFAULT for a particular hostname.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20020829061223936