I know that there are already plenty of issues regarding WOL over the Internet but I thinkt that mine is still a little bit different. Because I am using an internet provider which doesn't allow me to change anything on my router (this is really annoying - my dad bought it... times ago) I called my provider and they told me that it's not possible to open ports (for WOL) with the packet we're using. So either we'll have to switch to another packet or I find another solution about how to use WOL without customizing the router.
Are there any solutions/hints out there? ;)