diff --git a/port.json b/port.json
index 17fdad0..dfeea1d 100644
--- a/port.json
+++ b/port.json
@@ -2,6 +2,10 @@
   "version": 3,
   "rules": [
     {
+      "source_port": [],
+      "source_port_range": [
+        "21000:21999"
+      ],
       "port": [],
       "port_range": [
         "21000:21999"