I use SSH for various "stuff" ( one of those technical terms again ) and if you don't know, SSH is an acronym for Secure SHell. Wikipedia has this to say. This link at Linux Commando has an interesting explanation that is very easy to understand about "keys" and authentication. They also discuss MiM (Man in the Middle) attacks and have a good way of dealing with some of the odd things that happen when you are SSH-ing to a host that you don't control or for the first time. There is one other things you can do, which is get the key through another channel ( email, IRL, etc. ) before you log in.
If you have seen this message:
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
and wonder what it means, check out the Linux Commando link. It is a well writen article and worth a read to those who have an interest in such things.
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