cyberstrikeus 3.4.1 Ensure TCP Wrappers is installed (Scored)
Profile Applicability
- Level 1 - Server
- Level 1 - Workstation
Description
TCP Wrappers provides a simple access list and standardized logging method for services capable of supporting it. In the past, services that were called from inetd and xinetd supported the use of tcp wrappers. As inetd and xinetd have been falling in disuse, any service that can support tcp wrappers will have the libwrap.so library attached to it.
Rationale
TCP Wrappers provide a good simple access list mechanism to services that may not have that support built in. It is recommended that all services that can support TCP Wrappers, use it.
Audit Procedure
Run the following command and verify TCP Wrappers is installed:
dpkg -s tcpd
Expected Result
The package tcpd should be installed (status: install ok installed).
Remediation
Run the following command to install TCP Wrappers:
apt-get install tcpd
Default Value
Not installed by default on all systems.
References
- CIS Controls: 9.2 - Leverage Host-based Firewalls
Profile
- Level 1 - Server
- Level 1 - Workstation