Level 5 CMMC - CMMC Practices

PE.3.136  

Reference: CMMC 1.02

Family: PE

Level Introduced: 3

Practice:
Enforce safeguarding measures for CUI at alternate work sites.

CMMC Clarification:
Most organizations focus on securing their corporate network and devices. Today many organizations have mobile staff who work from home or travel as part of their job. This means the organization needs to define and implement safeguards to account for protection of information beyond the enterprise perimeter. Safeguards may include physical protections, such as locked file drawers, as well as electronic protections.

Example
In your organization many of the project managers work remotely as they often travel to sponsor locations or even work from home. Since the projects they work require access to Controlled Unclassified Information (CUI) the organization must ensure the same level of protection is afforded as when they work in the office. Each laptop is deployed with patch management and anti-virus software protection. Since data may be stored on the local hard drive you have enabled full-disk encryption on their laptops. When the remote staff member needs access to the internal network you require VPN connectivity that also disconnects the laptop from the remote network (i.e., prevents split tunneling). The VPN requires multifactor authentication to verify the user is who they claim to be.

3.10.6

Enforce safeguarding measures for CUI at alternate work sites.

Discussion:
Alternate work sites may include government facilities or the private residences of employees. Organizations may define different security requirements for specific alternate work sites or types of sites depending on the work-related activities conducted at those sites.

[SP 800-46] and [SP 800-114] provide guidance on enterprise and user security when teleworking.

Source: NIST Special Publication 800-171 Rev. 2

PE-17

ALTERNATE WORK SITE

Description:
The organization:
    a. Employs [Assignment: organization-defined security controls] at alternate work sites;
    b. Assesses as feasible, the effectiveness of security controls at alternate work sites; and
    c. Provides a means for employees to communicate with information security personnel in case of security incidents or problems.

Supplemental Guidance:
Alternate work sites may include, for example, government facilities or private residences of employees. While commonly distinct from alternative processing sites, alternate work sites may provide readily available alternate locations as part of contingency operations. Organizations may define different sets of security controls for specific alternate work sites or types of sites depending on the work-related activities conducted at those sites. This control supports the contingency planning activities of organizations and the federal telework initiative. Related controls: AC-17, CP-7.

Source: NIST Special Publication 800-53 Rev. 4

Source: CMMC v1.02