Are you able to telnet to your servers IP on port 22? Looks like your connection is timing out on the SSH connect. That would be my first trouble shooting step
Code:
telnet 10.207.15.81 22
ctrl+] to escape out of telnet if you need to
Also take a look at the log files on the server to see if there is anything reporting, your /var/log/messages is a good place to start.