Hi there.. I have a Hathway Internet Connection [Mumbai-Shivaji Park]. Recently, i was trying to use limewire to upload some files to a friend. I was able to connect to his computer [He uses BSNL Net connection]. I saw an error there that i can't upload any files to any user as i am either behind a router or my ports are blocked. I checked with the ISP and they claim that i am not behind any router nor any of my ports are blocked. Strangely, i had tried to run a server [Ragnarok Game] from my connection. None of my friends could connect to my server. I use the following modem for my connection: Scientific Atlanta DPC2100 Cable Modem Speed: Up to 43 Mbps downstream and 10 Mbps upstream Convenience: Always on – three simple connections and your high-speed link is ready for data Size: Small, compact design – only 5.25 in.(H) x 4 in.(D) x 1.5 in.(W) Compatibility/Portability: The DPC2100 is DOCSIS 2.0 certified Orientation: Mounts either vertically or horizontally – flexible design to fit your space requirements Power: External universal power supply and power cord included Display: Five, easy-to-understand LEDs (Power, PC, Cable, Send, Receive) – diagnostics made simple Connection: USB and Ethernet ports – getting a new PC doesn’t mean having to acquire a new cable modem (USB and Ethernet cables included) Multiple Users: One DPC2100 can support up to 64 devices (additional equipment required) Can someone tell me how to find out whether i am behind a router or not? I have a constant IP i.e a Static IP and it never changes.. And one important thing is that a CABLE LINE [T.V Cable Line] comes into my house and connects to my modem and from the modem i get a LAN cable which connects to my computer.. When i went to PORT FORWARDING website.. i could not find my appropriate modem.. I dont understand what to do.. Please help me out here.. If anyone else has hathway connection, please advice me what to do.. Thanks..