diff --git a/cmd/shadowsocks-server/server.go b/cmd/shadowsocks-server/server.go
index a18404e..d06f96a 100644
--- a/cmd/shadowsocks-server/server.go
+++ b/cmd/shadowsocks-server/server.go
@@ -160,7 +160,6 @@ func main() {
 		if config.ServerPort != 0 {
 			log.Println("ignoring server_port and password option, only uses port_password")
 		}
-		c := make(chan byte)
 		for port, password := range config.PortPassword {
 			go run(port, password)
 		}
@@ -170,6 +169,7 @@ func main() {
 		}
 		log.Println("all ports ready")
 		tableCache = nil // release memory
+		c := make(chan byte)
 		<-c              // block forever
 	}
 }
diff --git a/config.json b/config.json
index e56fa0d..02a39cc 100644
--- a/config.json
+++ b/config.json
@@ -3,6 +3,10 @@
     "server_port":8388,
     "local_port":1080,
     "password":"barfoo!",
+    "port_password": {
+        "8388": "barfoo!",
+        "8387": "foobar!"
+    },
     "timeout":60,
     "debug":true
 }