Maintenance Supervision

Maintenance personnel refers to individuals who perform hardware or software maintenance on organizational systems, while PE-2 addresses physical access for individuals whose maintenance duties place them within the physical protection perimeter of the systems. Technical competence of supervising individuals relates to the maintenance performed on the systems, while having required access authorizations refers to maintenance on and near the systems. Individuals not previously identified as authorized maintenance personnel—such as information technology manufacturers, vendors, systems integrators, and consultants—may require privileged access to organizational systems, such as when they are required to conduct maintenance activities with little or no notice. Based on organizational assessments of risk, organizations may issue temporary credentials to these individuals. Temporary credentials may be for one-time use or for very limited time periods. (Source)

BeyondTrust – How to Secure Remote Access for Vendors & Employees: 10 Tips
This Blog provides tips on how to secure remote access. There are links within the document to additional articles.
Broadcom – Five Best Practices to Manage and Control Third-Party Risk
This link provides 5 best practices for controlling third-party vendor risks.
Colorado Department of Education – Hardware and Software Maintenance Policy
This link provide a sample policy from the Colorado Department of Education. It creates a formal process of maintaining hardware and software to ensure that a clearly defined set of procedures is used to manage system resources.
Delinea – Limit Privileged Access for Third-Party Vendors Without Restricting their Ability to Get Work Done
This link provides specific processes you can use, and how those strategies can be applied to some of the different types of vendor engagements you need to support.
Department of Homeland Security – Configuring and Managing Remote Access for Industrial Control Systems
From the Department of Homeland Security, these are recommended practices for configuring and managing remote access for control systems covering various roles including vendors, field technicians, business partners (all of which may have differing requirements.)
NIST SP 800-53: MA-5 Maintenance Personnel
The organization: a. Establishes a process for maintenance personnel authorization and maintains a list of authorized maintenance organizations or personnel; b. Ensures that non-escorted personnel performing maintenance on the information system have required access authorizations; and c. Designates organizational personnel with required access authorizations and technical competence to supervise the maintenance activities of personnel who do not possess the required access authorizations.
North Carolina – IT System Maintenance Policy
This is State of North Carolina’s IT System Maintenance policy and provides an example of the roles, responsibilities and various components of maintenance supervision.
Security Scorecard – Best Practices for Trusted Third-Party Risk Management
To move your business forward and propel growth, you need to be able to trust your third parties and their security posture.

CMMC Level 1 Self-Assessment Guide
This document provides self-assessment guidance for conducting Cybersecurity Maturity Model Certification (CMMC) assessments for Level 1.
CMMC Level 2 Assessment Guide
This document provides assessment guidance for conducting Cybersecurity Maturity Model Certification (CMMC) assessments for Level 2.
CMMC Level 3 Assessment Guide
This document provides assessment guidance for conducting Cybersecurity Maturity Model Certification (CMMC) assessments for Level 3.
NIST SP 800-171A Assessing Security Requirements for Controlled Unclassified Information
The purpose of this publication is to provide procedures for assessing the CUI requirements in NIST Special Publication 800-171.

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