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cis-ubuntu1204-v110-7-4-2

DevOps & Security
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Create /etc/hosts.allow

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How to use this skill

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  3. Review the proposed files and risks before you approve installation.
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_12.04_LTS_Server_Benchmark_v1.1.0/cis-ubuntu1204-v110-7-4-2/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-ubuntu1204-v110-7-4-2/. 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

7.4.2 Create /etc/hosts.allow (Not Scored)

Profile Applicability

  • Level 1

Description

The /etc/hosts.allow file specifies which IP addresses are permitted to connect to the host. It is intended to be used in conjunction with the /etc/hosts.deny file.

Rationale

The /etc/hosts.allow file supports access control by IP and helps ensure that only authorized systems can connect to the server.

Audit Procedure

Using Command Line

Run the following command to verify the contents of the /etc/hosts.allow file.

cat /etc/hosts.allow

Expected Result

Contents will vary, depending on your network configuration.

Remediation

Using Command Line

Create /etc/hosts.allow:

echo "ALL: <net>/<mask>, <net>/<mask>, ..." >/etc/hosts.allow

where each <net>/<mask> combination (for example, "192.168.1.0/255.255.255.0") represents one network block in use by your organization that requires access to this system.

Default Value

The /etc/hosts.allow file may or may not exist by default.

References

  • CIS Ubuntu 12.04 LTS Server Benchmark v1.1.0

Profile

Level 1 - Not Scored