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System hardening
ASD ISMISM-1916

ASD ISM 1916 Ensure server application configurations are approved

What it says

Approved configurations for server applications are developed, implemented and maintained.

Quoted as published. Everything else on this page is written by Control Stack.

What it means

In plain English

Organisations should create and maintain approved settings for server software to ensure security.

This control means that organisations should develop and stick to a set of approved settings for their server software to keep things secure. If this isn't done, servers may become vulnerable to attacks, which could result in data breaches, loss of customer trust, or financial harm.

Why it matters

Without approved server application configurations, insecure settings can be introduced, enabling exploitation and causing data breaches and loss of trust.

How to implement

  1. System owners should identify and document the necessary software configurations that must be approved before being applied to servers.

    They can do this by consulting with IT specialists to determine security needs and creating a standard checklist of configurations.

  2. The IT team should apply only those configurations that have been formally approved.

    This means following a documented process where all changes must be reviewed and signed off by a responsible party before implementation.

  3. Managers should conduct regular training sessions to ensure that staff understand why approved configurations are crucial.

    They can use real-world examples of security incidents due to improper configurations to highlight the importance.

  4. IT teams should schedule regular reviews of the configuration settings to ensure they remain up-to-date and secure.

    This involves checking current configurations against the approved list and making updates as necessary.

  5. System owners should create a simple process for updating the approved configurations.

    This process should include gathering input from key stakeholders and documenting any changes made to help maintain clarity and consistency.

Keep it running

Review and update approved server application configuration baselines regularly; enforce change control to prevent unauthorised configuration changes.

Evidence and audit

  1. Check 1 of 5What an auditor asks for

    Ask for

    The approved configuration standards document: Request the file that outlines all approved server settings.

    Look at

    Clear details of each configuration and approval dates.

    Good evidence

    Standards are detailed, dated, and approved by a responsible authority.

  2. Check 2 of 5What an auditor asks for

    Ask for

    To see the change approval record: Request evidence of approved changes for server configurations.

    Look at

    Whether each change has documented approval.

    Good evidence

    All changes have approval records and are consistent with the standard.

  3. Check 3 of 5What an auditor asks for

    Ask for

    Training session records: Request logs or records of training sessions focused on server configurations.

    Look at

    Attendee lists, topics covered, and dates.

    Good evidence

    Regular sessions are conducted with comprehensive coverage of relevant topics.

  4. Check 4 of 5What an auditor asks for

    Ask for

    The procedure document for reviewing configurations: Request the document detailing how configuration reviews are conducted.

    Look at

    Steps that specify how often reviews occur and who is responsible.

    Good evidence

    Procedure is clear, scheduled, and responsibilities are well-defined.

  5. Check 5 of 5What an auditor asks for

    Ask for

    Recent review reports: Request recent reports or records from configuration reviews.

    Look at

    Findings, suggested changes, and any actions taken.

    Good evidence

    Reports are thorough, with documented follow-up actions for improvements.

Mappings

Closest match in ISO/IEC 27001: A.8.8, Management of technical vulnerabilities, which this control covers in full and more.

ISO 27001

ISO/IEC 27001: 2 mappings

ASD Essentials

ASD Essentials for enterprise IT: 1 mapping

Mappings show how controls relate across frameworks. They do not imply full equivalence or certification.