Hi, I am not very sure but the ssh problem maybe because of a wrongly entered subnet mask.
You said you just pressed enter and the entries were automatically filled. Now here the subnet mask filled automatically (i.e. by default) is the default subnet mask of the class of I.P. addresses you are using, whereas your network may be using some other subnet mask in which case you may have such problems.
Can you ping other computers in your subnet?
If you get something like :
connect : Network is unreachable
Then the problem may be due to this.
Please check with the people in your subnet about what subnet mask they are using?
Post back what you find.
Hope this helps.