Install ufw Package

Classification:

compliance

Framework:

Control:

Description

The ufw package can be installed with the following command:


$ apt-get install ufw

Rationale

ufw controls the Linux kernel network packet filtering code. ufw allows system operators to set up firewalls and IP masquerading, etc.

Remediation

Shell script

The following script can be run on the host to remediate the issue.

# Remediation is applicable only in certain platforms
if [ ! -f /.dockerenv ] && [ ! -f /run/.containerenv ]; then

DEBIAN\_FRONTEND=noninteractive apt-get install -y "ufw"

else
 >&2 echo 'Remediation is not applicable, nothing was done'
fi

Ansible playbook

The following playbook can be run with Ansible to remediate the issue.

- name: Ensure ufw is installed
 package:
 name: ufw
 state: present
 when: ansible\_virtualization\_type not in ["docker", "lxc", "openvz", "podman", "container"]
 tags:
 - DISA-STIG-UBTU-20-010433
 - enable\_strategy
 - low\_complexity
 - low\_disruption
 - medium\_severity
 - no\_reboot\_needed
 - package\_ufw\_installed