How to create a WiFi Hotspot on a linux machine in order to share the ethernet connection?

How to create a WiFi Hotspot on a linux machine in order to share the ethernet connection? I tried several days "all" solutions posted in the internet on my Macbook Pro running on SuSe 12.3 under gnome but nothing worked. My mobile devices (iphone, ipad) could see the created Hotspot but after connecting to it there was no internet connection. The simple solution was to set the "wireless security" to "none". For me no problem at all for that purpose I am using it. So here come the instructions: I use Networkmanager and the nm-applet. a) In nm-applet click on "Create New Wireless Network" Specify any name for "Network name" in the window that will open. Select "none" under "Wireless security" Select "Create" b) connect any wireless device to this newly created hotspot and press "Join Anyway" in case that the iOS will inform you that this hotspot is not connected to the internet. For me that and only that worked out.