Why use port 443? That requires admin/root on systems to open up, and maybe ppl already have a webserver running on that port...
Also added a signature.. all I could fit in 50 characters

Their is a valid reason behind it, just read the thread for details.
If you have issue like this. Change virtualcoin.conf "port=30000
But even in that case, I suggest create port forwarding rule to allow traffic.
Outside port TCP 443, inside port TCP 30000 & your PC's IP address.