Ip address problems

[goober2003]

I've been having problems with my ip because i'm trying to setup a ftp server to trade files with friends but my ip is detected as 10.0.0.2 which is a local ip and I wanted to be able to connect to it with my other ip that looks like this xx.xxx.xx.xxx. So I just need to get my ip to be detected as xx.xxx.xx.xxx instead of 10.0.0.2. I've got dsl and I think it's a static ip since it never changes and i'm using a cisco 678 router with a network switch. I tried changing my ip in tc/ip config and everything was on auto detect but I know the subnet mask, gateway, and dns so I entered that in with the 10.0.0.2 that I had and everything worked just like it did before but when I entered the xx.xxx.xx.xxx and the ftp server detected that ip that I wanted but the internet stoped working. I would appreciate any help because i'm confused about this and could it require changing the router config?

Thanx

[classicsoftware]

The problem is the router.

The router is what gets the IP address from the DSL provider and the IP addres is ususally NOT static. To get a static IP address, you will have to contact your ISP.

Once the router gets the IP address from the ISP it uses that IP address to the outside world no matter how many PC's are behind it. At the same time, the router provides IP address to the computers behind it. This is called DHCP. This is why you have a router. You will have to look up the documentation on your router and configure a port on your router to allow the FTP service to function. I warn you, that by doing this, you are subjecting your computer to invasion by outside nasties....

If you jsut want trade files with friends, I would use pc-anywhere, that you can:
1) Only turn on when you want to
2) Disable or prevent people from getting on
3) provide a modicum of security for your pc

[Gallaeglagh]

classicsoftware is correct that your WAN ip is probably dynamic but you should be able it check yourself. The router will maintain your current ip for as long as you leave it on in general. Although your ISP might switch it up on you now and then.

If you access your router it should tell you what your current ip is.

I run a ftp server and have a dynamic ip, what I do is run .tzo service. This service allows my dynamic ip to be reported as a static ip www.xxxxxxx.tzo.com. The price for this service is about $2.oo US monthly.

While I occasionally get script kiddies who see port 21 is open as far as I know no one has ever broken into my server. Of course you can use some obscure port like 2875. If there's a conflict you'll know quickly.

Once you have your server software setup, the ports forwarded, your ip known to your friends and Zone Alarm running you should be good to go.