changing password on red hat 7.2 mail server
I work at a school where our email server is a red hat 7.2 box. Our administrator assigns us passwords and won't help us change them, which I find pretty unnaceptable. How can I try to change it myself? I tried telneting to the box and logging in. After I entered my password, my connection dropped - does that mean the box will not accept telnet sessions? I tried using ssh but wasn't sure of the format - ssh xxx.xxx.xxx.xxx - is that correct? That didn't work - I suppose I can't do that from a Windows box - which is what I was on. Any other ideas?
My administrator knows even less about linux than I do, so I'm sure he hasn't set up any clever security beyond whatever the default is for 7.3