Now we are starting to get in to the juicy stuff! This level is designed to make you scan for open ports, identify the services on those ports, then connect securely to the only applicable port in the same manner as the last level.
This level has 3 stages, in the first one you will use nmap to scan for and identify ports. In the second one you will follow the same exact process to connect as the last level. In the third stage you will need to create your own private key to connect to the next level. This level may take some trial and error, but stick with it – the errors are pretty self explanatory and if you have patience you should be able to get through it in a reasonable amount of time. If you are interested in security work, make sure to learn all you can about nmap – it will almost certainly be one of the most used tools in your toolbox!