diff --git a/etc/emq.conf b/etc/emq.conf
index e0a0508d3..a063025dc 100644
--- a/etc/emq.conf
+++ b/etc/emq.conf
@@ -449,7 +449,7 @@ listener.wss.external.certfile = {{ platform_etc_dir }}/certs/cert.pem
 ##--------------------------------------------------------------------
 ## External MQTT/REST API Listener
 
-listener.api.external = 8080
+listener.api.external = 127.0.0.1:8080
 
 listener.api.external.acceptors = 4
 
@@ -457,19 +457,6 @@ listener.api.external.max_clients = 64
 
 listener.api.external.access.1 = allow all
 
-## TCP Options
-listener.api.external.backlog = 1024
-
-listener.api.external.recbuf = 4KB
-
-listener.api.external.sndbuf = 4KB
-
-listener.api.external.buffer = 4KB
-
-listener.api.external.nodelay = true
-
-
-
 ##-------------------------------------------------------------------
 ## System Monitor
 ##-------------------------------------------------------------------