Advanced Penetration Testing for Highly-Secured Environments - Second Edition

Reader challenge

For this section, review the information from the chapter and try to expand on the topics. This will allow you to increase your knowledge of the different topics. To stimulate your thinking, try some of the following topics:

• The tcp wrappers can be considered as a simple firewall. It is a host-access control system and also can be used to secure a service. The tcp wrappers contains two files named hosts.allow and hosts.deny. Research this feature, try to implement it on one of your virtual machines, and then attempt to scan the network services once they are wrapped. An example of a wrapped service that has been scanned by Nmap is shown in the following image:

  Using the image as an example, configure the settings and scan the ports ...