Linux TCP Wrappers is an open-source ACL (Access Control List) that aims at providing you with a way of restrict access to network services based on source IP or host addresses. This it does through two files
/etc/hosts.deny. It is meant to strengthen then security position of a server, and is intended to work in conjunction with other more robust firewalls in the system.
What you will learn
This scenario covers the following concepts, among others: - Denying all access to all network services - Restricting access to localhost - Resrticting access one or more services in a single rule - Restricting access to a range of hosts - Determining which services can be used with TCP wrappers, among others...
It is recommended, but not necessary to be familiar with the following concepts:
- Basic Linux usage
However, it is still possible to follow the mission and complete the assessment by learning as you go.
This scenario contains one virtual machine.
- TIME30 MINUTES
- COST10 CRYSTALS