• Online, Self-Paced
Course Description

In this challenge, you will limit access to a system to a single subnet, edit the /etc/hosts.deny file and deny all traffic to this system, edit the /etc/hosts.allow file and allow SSH traffic to this system from a single subnet, demonstrate that access has been limited, and allow your subnet access to the system and test connectivity. Note: Once you begin a challenge you will not be able to pause, save, or return to your progress. Please ensure you have set aside enough time to complete the challenge before you start.

Learning Objectives

In this challenge, you will limit access to a system to a single subnet, edit the /etc/hosts.deny file and deny all traffic to this system, edit the /etc/hosts.allow file and allow SSH traffic to this system from a single subnet, demonstrate that access has been limited, and allow your subnet access to the system and test connectivity. Note: Once you begin a challenge you will not be able to pause, save, or return to your progress. Please ensure you have set aside enough time to complete the challenge before you start.

Framework Connections

The materials within this course focus on the Knowledge Skills and Abilities (KSAs) identified within the Specialty Areas listed below. Click to view Specialty Area details within the interactive National Cybersecurity Workforce Framework.