Page 684 - (ISC)² CISSP Certified Information Systems Security Professional Official Study Guide

Wiring closets are also commonly used to house and manage the
wiring for many other important elements of a building, including

alarm systems, circuit breaker panels, telephone punch-down blocks,
wireless access points, and video systems, including security cameras.

Wiring closet security is extremely important. Most of the security for
a wiring closet focuses on preventing physical unauthorized access. If
an unauthorized intruder gains access to the area, they may be able to
steal equipment, pull or cut cables, or even plant a listening device.

Thus, the security policy for the wiring closet should include a few
ground rules, such as the following:

Never use the wiring closet as a general storage area.

Have adequate locks, which might include biometric elements.

Keep the area tidy.

Do not store flammable items in the area.

Set up video surveillance to monitor activity inside the wiring
closet.

Use a door open sensor to log entries.

Do not give keys to anyone except the authorized administrator.

Perform regular physical inspections of the wiring closet’s security

and contents.

Include the wiring closet in the organization’s environmental
management and monitoring, in order to ensure appropriate
environmental control and monitoring, as well as detect damaging
conditions such as flooding or fire.

It is also important to notify your building management of your wiring

closet security policy and access restrictions. This will further reduce
unauthorized access attempts.

Wiring closets are just one element of a cable plant management
policy. A cable plant is the collection of interconnected cables and
intermediary devices (such as cross-connects, patch panels, and
switches) that establish the physical network. Elements of a cable
plant include the following: