diff --git a/README.md b/README.md
index cf6987e..ae6f1b7 100644
--- a/README.md
+++ b/README.md
@@ -60,4 +60,5 @@ bash install.sh
 
 # After the Installation
 - When changing IP, the address should update every half hour
-- you can manually update with ```sudo dedyn.sh```
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+- you can manually or check update with ```sudo dedyn.sh```
+- you may need to create some Portforwardings or IPv6-forwardings in yout router to be able to access your device from the Internet. Often used ports are 80 and 443 for http and https for example.
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