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Install nftables Package

An XCCDF Rule

Description

nftables provides a new in-kernel packet classification framework that is based on a network-specific Virtual Machine (VM) and a new nft userspace command line tool. nftables reuses the existing Netfilter subsystems such as the existing hook infrastructure, the connection tracking system, NAT, userspace queuing and logging subsystem. The nftables package can be installed with the following command: 

$ apt-get install nftables

Rationale

nftables is a subsystem of the Linux kernel that can protect against threats originating from within a corporate network to include malicious mobile code and poorly configured software on a host.

ID
xccdf_org.ssgproject.content_rule_package_nftables_installed
Severity
Medium
References
Updated



Remediation - OS Build Blueprint


[[packages]]
name = "nftables"
version = "*"

Remediation - Ansible

- name: Ensure nftables is installed
  package:
    name: nftables
    state: present
  when: ansible_virtualization_type not in ["docker", "lxc", "openvz", "podman", "container"]
  tags:

Remediation - Puppet

include install_nftables

class install_nftables {
  package { 'nftables':
    ensure => 'installed',
  }

Remediation - Shell Script

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

DEBIAN_FRONTEND=noninteractive apt-get install -y "nftables"

else