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please help me in port forwarding. i m stuck in the middle. suppose my local ip is - 192.168.0.103 and public ip is - 49.248.xx.xxx I have D-link DSL-2520U ADSL2+ modem router so here is what i do, i login into the router and go to the port forwarding setting and give my public ip there and port no - 4455. I open up my software listen the port then i go to canyouseeme.org and check my port 4455 and it dosent work.

my firewall is also off.

and As i told you i dont know much about networking so please tell me in little detail.

When i try to connect my software from my local ip. it start working but when i try to connect my software with my public ip it does not connect.

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In the port forwarding section, you should specify the local IP address you want to pass the packets to.

For example, if your public IP address is being accessed on 49.248.xxx.xxx:5901, and you have a server listening on 192.168.0.103:5901, you need a port forwarding rule for traffic to 192.168.0.103, on port 5901.

When your WAN IP address is sent a TCP or UDP packet at 5901 it will then be routed to the correct local IP address and handled by the listening server.

There are guides for your router here which may be useful to you.

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  • @SyedSaif Your image here shows you need a private IP of your IP: 192.168.0.103, and all the external and internal port values of 4455. I don't know what connection to use as I don't know your configuration.
    – Jonno
    Jan 23, 2016 at 19:08
  • ok.. i did the same thing. in private ip column at right side i selected my local ip. on left hand side it auto selected my local ip..... protocol - all ... external start port n external end port - 4455 .... externnal start port n internal end port = 4455 ..... applied
    – Syed Saif
    Jan 23, 2016 at 19:52

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