Ah, telnet. You know, when the internet was Arpanet, this was great - total, complete, full access simply and quickly - no pesky security stuff to get in the way of anything. However, this antiquated beast still lurks around because admins won't install SSH (working with my University right now to get SSH rolled on their servers - but, no, "there's nothing wrong with telnet"), and because users won't install SSH clients (good call on putty, Focmaester! - you can also head to openssh.org , if I remember correctly, to get clients for all kinds of OS's) and won't pressure their local / upstream admins to install SSH. Of course, in a cluster you don't want SSH - it eats about 10% of your bandwidth over rlogin/rexec scripts.
<sigh> Yeah, this is fragmented ... time to make my brain contiguous again, I guess! Oh, well ... grennies are being packed off to Focmaester as I speak now. :)
