add azure ip address range

windows/security/threat-protection/windows-defender-atp/TOC.md

@@ -181,7 +181,7 @@
 ##### [Network firewall](../windows-firewall/evaluating-windows-firewall-with-advanced-security-design-examples.md)
 #### [Evaluate next generation protection](../windows-defender-antivirus/evaluate-windows-defender-antivirus.md)
 
-### [Access the Windows Security app](community-windows-defender-advanced-threat-protection.md)
+### [Access the Windows Defender Security Center Community Center](community-windows-defender-advanced-threat-protection.md)
 
 ## [Configure and manage capabilities](onboard.md)
 ### [Configure attack surface reduction](configure-attack-surface-reduction.md)

windows/security/threat-protection/windows-defender-atp/configure-proxy-internet-windows-defender-advanced-threat-protection.md

@@ -98,8 +98,22 @@ United Kingdom | ```uk.vortex-win.data.microsoft.com``` <br>```uk-v20.events.dat
 United States | ```us.vortex-win.data.microsoft.com```<br> ```us-v20.events.data.microsoft.com```<br>```winatp-gw-cus.microsoft.com``` <br>```winatp-gw-eus.microsoft.com```
 
 
+
 If a proxy or firewall is blocking anonymous traffic, as Windows Defender ATP  sensor is connecting from system context, make sure anonymous traffic is permitted in the above listed URLs.
 
+### IP range 
+You'll need to whitelist the following Azure IP addresses/ranges published on [Microsoft Azure Datacenter IP Ranges](https://www.microsoft.com/en-us/download/details.aspx?id=41653).
+
+The Windows Defender ATP service is deployed in the following regions:
+- \+\<Region Name="uswestcentral">
+- \+\<Region Name="useast2">
+- \+\<Region Name="useast">
+- \+\<Region Name="europenorth">
+- \+\<Region Name="europewest">
+- \+\<Region Name="uksouth">
+- \+\<Region Name="ukwest">
+
+
 
 ## Verify client connectivity to Windows Defender ATP service URLs