Cannot host working servers, only LAN can join, need help

[Smasher]

I cant host servers that let people join, it appears dead at all times. ive followed the port forwarding tutorials but it still wont work

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[Smasher]

Its a D-link DIR-300 router, heres what the port config says:

Name: Blockland1
Application name: none
Public port: 28000-28030
IP adress: 192.168.0.104
Computer name: none
Private port: 28000-28030
Traffic type: any