you don't mention whether or not you have enabled
Remote Access:
Secure shell (ssh) access: No access | Private | Public
Allow administrative command line access over ssh: no |yes
Allow ssh access using standard passwords: : no | yes
If you haven't made these active, then you can't connect. If you have, check that the ports you are trying to access are matching your desired values from these previous settings. If you try to access the public port, but it's disabled you wilobviously not connect. Try the private (internal) port instead...