diff --git a/cfg/linse-apu6.cfg b/cfg/linse-leiden.cfg
similarity index 53%
rename from cfg/linse-apu6.cfg
rename to cfg/linse-leiden.cfg
index 59dd6ff..9a8954c 100644
--- a/cfg/linse-apu6.cfg
+++ b/cfg/linse-leiden.cfg
@@ -1,3 +1,4 @@
+# to hide old windows for for leiden cryo
 [BOX]
 type=bare-apu
 MAC=00:0d:b9:5f:a5:cc
@@ -11,5 +12,9 @@ eth3=192.168.127.254
 
 [ROUTER]
 ; please refer to README.md for help
-3001=192.168.127.254:3001
-8080=192.168.127.254:80
+3001=192.168.2,2:3001
+5900=192.168.2.2:5900
+
+[FRAPPY]
+cfg=demo   # the cfg file for the frappy server
+port=5000   # the port for the frappy server