So I am trying to use ARD to access my parent's imac in another state. They are behind a router and the appropriate ports are forwarded for their IP in the router settings. I have forwarded the specific ports to their machine for both iChat file transfers/screen sharing, and Apple Remote Desktop, making sure not to overlap any of the port listings. The strange thing is that ARD will not find their system when i put in their WAN IP under the Scanner part of ARD. It's really strange because this used to work about 6 months ago but now it does not and nothing has changed with their system or internet settings. I can screenshare with them via iChat without any issues whatsoever. I thought that one was overriding the other but I don't see why iChat would override remote desktop. I am an experienced network and ARD user and this is really boggling my mind. Does anyone have any suggestions on anything I may be missing???