thats EXTREMELY naive. depending on ISP provided cheap router for security. most of those routers are very, very dumb. do the following excercise. add your ro

thats EXTREMELY naive. depending on ISP provided cheap router for security. most of those routers are very, very dumb. do the following excercise. add your routers external address as a gateway for your net internal IP, now from the outside reach your computer. easy. fully standards compliant. pierce your NAT like it wasn't even there.