diff --git a/libraries/networking/src/DomainHandler.h b/libraries/networking/src/DomainHandler.h
index fb18866001..505bbb94b5 100644
--- a/libraries/networking/src/DomainHandler.h
+++ b/libraries/networking/src/DomainHandler.h
@@ -12,6 +12,8 @@
 #ifndef hifi_DomainHandler_h
 #define hifi_DomainHandler_h
 
+#include <QProcessEnvironment>
+
 #include <QtCore/QJsonObject>
 #include <QtCore/QObject>
 #include <QtCore/QTimer>
@@ -30,10 +32,37 @@
 #include "ReceivedMessage.h"
 #include "NetworkingConstants.h"
 
-const unsigned short DEFAULT_DOMAIN_SERVER_PORT = 40102;
-const unsigned short DEFAULT_DOMAIN_SERVER_DTLS_PORT = 40103;
-const quint16 DOMAIN_SERVER_HTTP_PORT = 40100;
-const quint16 DOMAIN_SERVER_HTTPS_PORT = 40101;
+const unsigned short DEFAULT_DOMAIN_SERVER_PORT = 
+    QProcessEnvironment::systemEnvironment()
+    .contains("HIFI_DOMAIN_SERVER_PORT")
+        ? QProcessEnvironment::systemEnvironment()
+            .value("HIFI_DOMAIN_SERVER_PORT")
+            .toUShort()
+        : 40102;
+
+const unsigned short DEFAULT_DOMAIN_SERVER_DTLS_PORT = 
+    QProcessEnvironment::systemEnvironment()
+    .contains("HIFI_DOMAIN_SERVER_DTLS_PORT")
+        ? QProcessEnvironment::systemEnvironment()
+            .value("HIFI_DOMAIN_SERVER_DTLS_PORT")
+            .toUShort()
+        : 40103;
+
+const quint16 DOMAIN_SERVER_HTTP_PORT = 
+    QProcessEnvironment::systemEnvironment()
+    .contains("HIFI_DOMAIN_SERVER_HTTP_PORT")
+        ? QProcessEnvironment::systemEnvironment()
+            .value("HIFI_DOMAIN_SERVER_HTTP_PORT")
+            .toUInt()
+        : 40100;
+
+const quint16 DOMAIN_SERVER_HTTPS_PORT = 
+    QProcessEnvironment::systemEnvironment()
+    .contains("HIFI_DOMAIN_SERVER_HTTPS_PORT")
+        ? QProcessEnvironment::systemEnvironment()
+            .value("HIFI_DOMAIN_SERVER_HTTPS_PORT")
+            .toUInt()
+        : 40101;
 
 const int MAX_SILENT_DOMAIN_SERVER_CHECK_INS = 5;