that 10.X.X.X is not your internet ip therfor no one can access it from the internet, as long as its connected to the internet and you provide the right ip (internet ip not that 10 one) to whoever you want connect to your server then he will be able to connect to your server at ease (as long as your firewall is configured right) , and as i alredy mentioned in your other thread you can simply use dynamic dns instead and give ppl a hostname and not an ip (easier to remember) , if your tryin to run a server from a non home pc (eg your pc at work) then it might not be possible at all , as in many corporates/universities/buisnesses theres only 1 computer directly connected to the internet with high bandwidth and all computers in the place shares it so none of em are directly connected to the internet. this is done as a security measure to prevent anyone from the outside to connect to the pc's as some may contain sensitive data