Remove iptables-persistent Package
Description
The iptables-persistent package can be removed with the following command:
$ apt-get remove iptables-persistent
Rationale
Running both ufw and the services included in the
iptables-persistent package may lead to conflict.
Shell script
The following script can be run on the host to remediate the issue.
#!/bin/bash
# Remediation is applicable only in certain platforms
if dpkg-query --show --showformat='${db:Status-Status}\n' 'ufw' 2>/dev/null | grep -q installed; then
# CAUTION: This remediation script will remove iptables-persistent
# from the system, and may remove any packages
# that depend on iptables-persistent. Execute this
# remediation AFTER testing on a non-production
# system!
DEBIAN_FRONTEND=noninteractive apt-get remove -y "iptables-persistent"
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: Gather the package facts
package_facts:
manager: auto
tags:
- disable_strategy
- low_complexity
- low_disruption
- medium_severity
- no_reboot_needed
- package_iptables-persistent_removed
- name: Ensure iptables-persistent is removed
package:
name: iptables-persistent
state: absent
when: '"ufw" in ansible_facts.packages'
tags:
- disable_strategy
- low_complexity
- low_disruption
- medium_severity
- no_reboot_needed
- package_iptables-persistent_removed
