cis-ubuntu1604-v200-3-5-2-9

DevOps & Security

Ensure nftables service is enabled

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How to use this skill

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Prompt to paste

I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/CyberStrikeus/CyberStrike/blob/HEAD/.cyberstrike/skill/CIS_benchmarks/Operating_Systems/Ubuntu/CIS_Ubuntu_Linux_16.04_LTS_Benchmark_v2.0.0/cis-ubuntu1604-v200-3-5-2-9/SKILL.md

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First, summarize what it does, its dependencies, license status if identifiable, and any risks. Show the exact files you propose to add under .agents/skills/cis-ubuntu1604-v200-3-5-2-9/. Do not write files or run scripts until I approve.

After I approve, install the complete skill folder, including required referenced files, into that project location. Verify it is discoverable, then tell me its actual invocation name and how to use it. Do not claim it is installed until you have verified it.

Copying this prompt does not install or run the skill. Review third-party files before use. Codex skill guide

CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0 - Control 3.5.2.9

Profile

Level: Level 1 - Server, Level 1 - Workstation
Assessment Status: Automated

Description

The nftables service allows for the loading of nftables rulesets during boot, or starting on the nftables service.

Rationale

The nftables service restores the nftables rules from the rules files referenced in the /etc/nftables.conf file during boot or the starting of the nftables service.

Audit Procedure

Command Line

Run the following command and verify that the nftables service is enabled:

systemctl is-enabled nftables

Expected Result

enabled

Remediation

Command Line

Run the following command to enable the nftables service:

systemctl enable nftables

References

None

CIS Controls

Version 7

9.4 Apply Host-based Firewalls or Port Filtering - Apply host-based firewalls or port filtering tools on end systems, with a default-deny rule that drops all traffic except those services and ports that are explicitly allowed.