eBox firewall, by default, does NOT allow to make internal ssh connections.

To allow internal ssh connections:

  1. In the left menu click on Firewall and then on Packet filter.
  2. Get Configure default rules (You can also configure rules per object basis).
  3. In Services section select ssh with allow policy and click on add.
  4. Don't forget to save the changes (upper right button)

When all above is done, you should be able to make ssh connections.