How can I set up the computer(win XP) and router in order to expose the computer to internet .
So, public can fto in and out to this computer .
The computer is connect to the router that use PPPOE to access internet .
The computer is connected the router by direct cable
The router is TP link TL-WR740N.
Set Up Public FTP Using PC Public IP Address
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Set up the FTP server on the computer you desire which will have a private IP address. The go into the router configuration and forward Port 21 to computer with the FTP server on it. People will then be able to access your FTP server via your public IP address with actually knowing the private IP address of the computer that is running the server. The router does all the work of working that out.
Stuart