How to restrict Zendesk access to a specific IP address using Conditional Access

**Executive summary:** This guide explains how to restrict Zendesk access to specific IP addresses by configuring Named Locations and Conditional Access policies in Microsoft Entra ID, covering prerequisites (licenses, SSO configuration, static IPs, break‑glass account), steps to create and validate a report‑only policy, and recommendations for safe enablement and complementary controls such as MFA, VPNs, and Zero Trust.