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networking with Linux

Rmak

Junior Member
I have a Linux box setup with with redhat, that provides my other computers in the house with internet access. So i assign internal Ip's to to the rest of the computers. My question is, my bro wants to setup up a program that runs with windows only, couldnt find a lunix version. Its a program that lets people connect to u and d/l and trade information, and to connect to it u need a IP address (which is my isp IP). I guess its something like a FTP program. So when he launches the program within a Windows environment on his comp, no-one can access it, cuz of the internal IP. How, can i set it up so that people can access that program on his comp? Do i route something?
when people enter my IP nutting happens cuz they cant find the program thats running on the windows machine.

Please someone help =]

any advice/info/ would be great

Thnx
Rob
 
Well, for ftp you'd do something like:

/usr/sbin/ipmasqadm portfw -a -P tcp -L <outside IP> 21 -R <inside IP> 21

do the same for port 20 and you'll forward FTPD over to that box internally. Substitute the appropriate port number(s) for whatever program you're using.
 
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