i have one laptop connected to a camera and a GPRS modem. this device will connect to the internet using the mobile network and it can be in any place in the street. in the control room, i have an internet connection with a static IP address. my problem is in the laptop because it does not have a static or dynamic IP address on the internet (the mobile network use NATing). now i am running a server process on the laptop and i want to connect to it from the control room. i do not know how can i reach the laptop IP address.