Source IP restoration is enabled

Overview

When organizations deploy Global Secure Access as their cloud-based network proxy, Microsoft’s Secure Service Edge infrastructure routes user traffic. If you don’t enable source IP restoration, all authentication requests come from the proxy’s IP address instead of the user’s actual public egress IP.

Without this protection:

• Threat actors who compromise user credentials can authenticate from any location while bypassing IP-based Conditional Access controls and named location policies.
• Microsoft Entra ID Protection risk detections lose visibility into the original user IP address, which degrades the accuracy of risk scoring algorithms.
• Sign-in logs and audit trails no longer show the true source of authentication attempts, which makes incident investigation and forensic analysis more difficult.

Remediation

• Enable Global Secure Access signaling in Conditional Access. For more information, see Source IP restoration.

Run it

The check runs as part of the whole assessment, with the ZeroTrustAssessment module installed:

Install-Module ZeroTrustAssessment -Scope CurrentUser
Connect-Maester
Invoke-Maester -Pack ZTA -SkipBuiltIn

Leave out -SkipBuiltIn to run Maester’s own checks in the same run.

About this check

Severity	Medium
Effort to fix	Low
Impact on users	Low
Pillar	Network
Category	Network
Product	Entra ID
Feature	Global Secure Access
Area	Access control
ATT&CK	T1078.004 Cloud Accounts
Licence	Entra_Premium_Private_Access, Entra_Premium_Internet_Access
Tenant	Workforce, External

Product, feature, area and ATT&CK are Maester’s: the assessment does not record them, so Maester keeps them in the pack’s taxonomy.json.

A Microsoft check, part of the Zero Trust Assessment pack. Text from ZeroTrustAssessment 3.1.0, © Microsoft, MIT licence.