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AWS mgn medium security documentation change

Service: mgn · 2026-06-16 · Security-related medium

File: mgn/latest/ug/mgn-initialize-api.md

Summary

Added documentation for two new IAM roles and updated policy attachment steps

Security assessment

Added two new IAM roles (AWSApplicationMigrationFsxProxyRole and AWSApplicationMigrationFsxProxyLinkRole) with sts:AssumeRole permissions. This explicitly documents new security controls for FSx integration, requiring specific policy attachments to delegate permissions securely.

Diff

diff --git a/mgn/latest/ug/mgn-initialize-api.md b/mgn/latest/ug/mgn-initialize-api.md
index 312c8a40a..a9f6442fb 100644
--- a//mgn/latest/ug/mgn-initialize-api.md
+++ b//mgn/latest/ug/mgn-initialize-api.md
@@ -54,0 +55,2 @@ Role name | Trusted entities
+**AWSApplicationMigrationFsxProxyRole** | "mgn.amazonaws.com" | "sts:AssumeRole" | -  
+**AWSApplicationMigrationFsxProxyLinkRole** | "mgn.amazonaws.com" | "sts:AssumeRole" | -  
@@ -67 +69,5 @@ Role name | Trusted entities
-  6. Attach Managed Policy**AWSApplicationMigrationAgentPolicy_v2** to Role **AWSApplicationMigrationAgentRole**
+  6. Attach Managed Policy**AWSApplicationMigrationFSxProxyPolicy** to Role **AWSApplicationMigrationFsxProxyRole**
+
+  7. Attach Managed Policy**AWSApplicationMigrationFSxProxyVPCPolicy** to Role **AWSApplicationMigrationFsxProxyLinkRole**
+
+  8. Attach Managed Policy**AWSApplicationMigrationAgentPolicy_v2** to Role **AWSApplicationMigrationAgentRole**