diff --git a/configs/conf-available/05-source-portknock.conf b/configs/conf-available/05-source-portknock.conf
index 39b8c5f..7ff7db0 100644
--- a/configs/conf-available/05-source-portknock.conf
+++ b/configs/conf-available/05-source-portknock.conf
@@ -1,5 +1,14 @@
 [source:portknock]
 load = source_portknock.so
+; listen = 0.0.0.0:21 # ftp
 ; listen = 0.0.0.0:23 # telnet
+; listen = 0.0.0.0:25 # smtp
+; listen = 0.0.0.0:110 # pop3
+; listen = 0.0.0.0:143 # imap
+; listen = 0.0.0.0:1080 # socks
+; listen = 0.0.0.0:3128 # proxy
+; listen = 0.0.0.0:3389 # rdp
 ; listen = 0.0.0.0:5060 # sip
 ; listen = 0.0.0.0:6667 # irc
+; listen = 0.0.0.0:7547 # TR-069
+; listen = 0.0.0.0:8080 # proxy