I purchased an Airport Extreme router to be able to add a disk to it and share files with Macs and PCs over my LAN and over WAN. We have never gotten it to work. Apple tells me that it works but they cannot emulate my situation and suggests I hire an Apple certified consultant to fix the problem. They came in and told me that it's a Comcast modem problem and that I should contact Comcast. Comcast said they do not support 3rd party hardware and they could not help. My teams are very talented but not super tech savvy. We are currently afp file sharing on an older machine but cannot get the promised Windows file sharing to work. LAN Yes, WAN Yes, AFP Yes, SMB No. We tried a Synology server but it's implementation of AFP is DooDoo. Very slow and no indexing. Takes a week for a team member to see contents of a directory. I cannot be the only person in the world that want's to share files from a disk attached to an Airport Extreme over WAN using Comcast. Tired of Apple, Comcast and Consultants pointing the finger at each other with a retail product that claims to be able to share files over WAN to Macs and PCs. If someone has solid answers, I would appreciate any help.