I'm a complete beginner on all things Linux but have now got a new server (red hat) set up yesterday and I'm struggling to connect to via SSH it using Putty on a windows box. I get 'Network error: connection timed out' although I've tried to connect to the server from two different locations.

Could anyone give some clues to what might be wrong? Could it be a port that need opening from within my own firewall?

Any help much appreciated. Thanks.