Unix users, you may already have
If you don't have them, you should get them, and stop using FTP and Telnet to talk to computers whose security you care about. The risk is greatest if you or the hosts you talk to are on a shared network segment with a lot of untrusted neighbors who can see every bit you send or receive. Once you've switched, you should change your passwords on those computers.
Examples of shared network segments: cable modem service, university campus network, untrusted co-location environment.
Once you have
scp, you can replace your personal
home page on rachel by creating a new
file and going
scpcommand on your system will prompt for your rachel password.
To get a shell on rachel, type