PSATool (Physical Security Assessment tool) is a checklist-based application for assessing the physical security of Intermediate Distribution Frames (IDF). It supports the assessment of IDF physical security relative to 52 requirements derived from the NIST SP 800-53 (2009), NIST SP 800-53A (2010), and ISO/IEC 27002 (2005) standards for physical security and other authorities on best practices for safety critical systems. Additionally, PSATool allows its administrative users to customize this checklist to match an organizations practices.