Long time twit listener, first time poster.
I have three (semi) dumb routers with the head router being a modem/router. Suddenly my FingBox tells me TCP Port 30005 is open to the world (an open port checker website confirmed this).
No uPNP is enabled anywhere and I haven’t made any changes. I have checked each router individually.
What do ya reckon caused this ghostly port to open? And how can I close it?