how to make openbsd immun to telnet hijacking?

[Carsten Hammer <chammer_(_at_)_POST_(_dot_)_uni-bielefeld_(_dot_)_de>]

Hi,
in the last issue of the german computer magazine C t there is
an article about the programm juggernaut that was published in 
the hackermagazin Phrack.
What can i do to make openbsd secure? How can i disable ftp and telnet
sessions into a openbsd machine? Just remove them from /etc/inetd.conf?
Is there a way to look for a increasing of acknowledgements on the net?
ssh claims to be secure in this point but how to do ftp transfers 
through ssh?
ciao
Carsten