diff --git a/support/windows-server/active-directory/config-firewall-for-ad-domains-and-trusts.md b/support/windows-server/active-directory/config-firewall-for-ad-domains-and-trusts.md
index c0d3c4382c..e69989f676 100644
--- a/support/windows-server/active-directory/config-firewall-for-ad-domains-and-trusts.md
+++ b/support/windows-server/active-directory/config-firewall-for-ad-domains-and-trusts.md
@@ -70,6 +70,7 @@ For more information about the dynamic port range change in Windows Server 2012
 |49152-65535/TCP/UDP|88/TCP/UDP|Kerberos|
 |49152-65535/TCP/UDP|445/TCP|SMB (**)|
 |49152-65535/TCP|49152-65535/TCP|DFSR RPC (*)|
+|49152-65535/TCP|9389/TCP|Active Directory Web Services (ADWS)|
   
 NetBIOS ports as listed for Windows NT are also required for Windows 2000 and Server 2003 when trusts to domains are configured that support only NetBIOS-based communication. Examples are Windows NT-based operating systems or third-party Domain Controllers that are based on Samba.