You need two different things
-Windows
-Upnpc software
You can download the software from this site MiniUPnP download zone (http://miniupnp.tuxfamily.org/files/) but here is a direct link to the program, as it's a long list.
http://miniupnp.tuxfamily.org/files/...2-20140422.zip
When you have downloaded and opened the .rar file, unzip it to the "C:\Documents and Settings\yourname" folder, you can put it anywhere, but then you must figure out the command abit... Strongly recomend the location I wrote.
Now you also would need your ip address handy (http://whatismyipaddress.com/)
Now lets open DoS.
Start -> run -> write in 'cmd' and hit enter, a black window should open now.
Write this in that window to open port 80 for example, when your IP adress is 132.121.123.146.
Example:Spoiler!
Ofcourse you will edit the IP to YOUR ip and the port to the port you want to open.
The cmd program should now start to work and write alot of stuff on the screen, but the port should acctualy now be open! This has worked for me, and only my brother got the password for the router, what this program does, is that it goes directly to the access file on the router.
Great program in my opinion!
