diff --git a/Deploy/harbor.cfg b/Deploy/harbor.cfg
index 3bf02a7fd..16440e31b 100644
--- a/Deploy/harbor.cfg
+++ b/Deploy/harbor.cfg
@@ -1,10 +1,11 @@
 ## CONFIGURATIONS 
-#The endpoint for user to access UI and registry service
-hostname = mydomain.com
+#The IP address or hostname to access UI and registry service.
+#DO NOT use localhost or 127.0.0.1, because Harbor needs to be accessed by external clients.
+hostname = reg.mydomain.com
 #The protocol for accessing the UI and token/notification service, by default it is http
 #User can set it to https if ssl is setup on nginx
 ui_url_protocol = http
-#Email settings for ui to send password resetting emails
+# Email settings for ui to send password resetting emails
 email_server = smtp.mydomain.com 
 email_server_port = 25
 email_username = sample_admin@mydomain.com