Hi,

My ISP provides me a free static IP. But they have assigned it to the router instead of my system.

I'd like to use the static IP facility to run some network apps to allow things like direct file transfer from friends and stuff. How can I do this when the static IP is still assigned to the router itself?

I know this is not directly related to Linux but since I use Kubuntu 7.04, I thought by posting here, I can get Linux specific configuration steps.

It sounds like you need to set up a NAT rule on your router so that requests on specific ports will be directed from the router to your server.

I'm not very comfortable with networking. My router has a web-based config tool.

Here is the screenshot of the screen where it allows me to add NAT rule entry.

http://www.freewebs.com/onlinechandru/nat%5Fconfig.png

Could you pls explain what I'm supposed to enter in these fields?

Looks like you have a D-Link router. There are many help pages on setting up NAT on these routers, but the basics are:

Global Address = your address on the internet (the static address from your ISP)
Local Address = the address of your PC in your local network - probably 192.168.1.2
Destination port = the port for making the connection - e.g. 21 for FTP, 80 for HTTP
Local port = the port that you want this service to be available on your local PC - you may want to set your local FTP server to use port 2121 - it can be any value up to 65535, but ports below 1024 are special and have access restricted to the root user so avoid them.

Hope this helps.

Thanx for all your help. With the help you provided and some googling I've managed to do what I wanted.

Hi,

You could reference the Linux Networking HOWTO.

That site provides good amount of info on networking. Thanx for that.

Hi,

Yes, very useful to setup your network.