ok. right now it open. i didnt open it. when i got up. it was close. i already rule out firewall and any program on my pc. any idea what on earth doing this. a bad internet line? if you got any idea that can help put problem into spotlight. let me know.

OS: window 8.1 64bit
CPU: i5 third generation
REM: 16gb
Video card: Geforce GTX 650 TI Boost superclocked
Download speed: 60mbs
upload speed: 4mb
Hosting game: Minecraft and Gmod
port firewall: is open and using DMZ
PC firewall: is open to all port that list minecraft and gmod plus other.
if need more data, just ask!1

i now know where my weird port problem coming from. turn out putting port 25565 and 25566 on same line do not open 2 port. system will try use best port just for 1 thing. \(o.O)/ thank you anyway...