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CIS Ubuntu 14.04 LTS - 3.6.1 Ensure iptables is installed

DevOps & Security
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Verify that iptables is installed for firewall management and configuration

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Source SKILL.md: https://github.com/CyberStrikeus/CyberStrike/blob/HEAD/.cyberstrike/skill/CIS_benchmarks/Operating_Systems/Ubuntu/CIS_Ubuntu_Linux_14.04_LTS_Benchmark_v2.1.0/cis-ubuntu1404-v210-3-6-1/SKILL.md

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3.6.1 Ensure iptables is installed (Scored)

Profile Applicability

  • Level 1 - Server
  • Level 1 - Workstation

Description

iptables allows configuration of the IPv4 tables in the linux kernel and the rules stored within them. Most firewall configuration utilities operate as a front end to iptables.

Rationale

iptables is required for firewall management and configuration.

Audit Procedure

Run the following command and verify iptables is installed:

dpkg -s iptables

Expected Result

The package iptables should be installed (status: install ok installed).

Remediation

Run the following command to install iptables:

apt-get install iptables

Default Value

Installed by default on Ubuntu.

References

  • CIS Controls: 9.2 - Leverage Host-based Firewalls

Profile

  • Level 1 - Server
  • Level 1 - Workstation