I just submitted a question with regards to networking. A router is involved. Unfortunately, there is no router tag, only a route tag.
I would have to disagree with the need for a router tag, your question has nothing to do with the router, it's just an additional detail. Tags have gone under several major changes - in this case router would be considered more a meta tag, which wouldn't add any additional value to your post. Instead I've added the file-sharing tag which seems to be more in-line with your ultimate goal.