You do not have to DMZ your machine IP, just forward this port number in that machine in the router "Application & Gaming" tab. 7 Z( t. U5 m3 X! V% i8 I% [2 U8 S. F
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If your home machine is a linux box, you can forward your port 22 in your router and using SSH to tunnel VNC. 6 n- E6 Q' M$ ~: D+ _& ~2 ?& ghttp://members.shaw.ca/nicholas.fong/vnc/6 U9 Q- y& b9 k# R
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Not sure how to do that in Windows, I remember need to turn on remote desktop. function.