You would need to assign a NIC on your FTP to that IP address which you listed. I'm guessing you're using an internal public IP address range of 10.1.2.x?
You're risky in what you're trying to do unless you have proper security setup: Double firewall in this case.
Anyhow, I can't ping the IP address you have there, meaning you either block WAN Requests via a router or firewall, or the IP address isn't statically set to one of your PCs.
Either you set the PC to that static IP address which you have purchased from your ISP. If you used a name instead of IP, you would have to have your ISP add that information into DNS for correct routing.
I would recommend keeping this PC strictly on the public outside though, no internal IP address range. When I did a trace route, it started pulling back private based IP addresses.. if that is in fact your private subnet, you have a huge secuirty problem on your hands.
Find the internal network ip address of the ftp computer. Forward ports 20 and 21 to that ip address. Any FTP traffic will now be directed to the FTP computer. The rest of the computers will not receive ftp traffic from outside your network. Infact you might block ftp access into all other computers.
Sorry - I was thinking about this from a company side, not home based.
In a company, we'll put an FTP server behind 1 firewall but have another firewall to block the FTP server from the internal network. The FTP server would have a statically set IP address instead of letting the router handle the forwarding requests.
As Sturm stated, you'll most likely want to set a static IP address of 192.168.x.x on the FTP server and on your router, forward port 20/21 (ftp protocol) to the static 192.168.x.x FTP computer.
Reason for making the IP static is that if the IP changes, mainly if computers are powered on in a different order, the static IP has a good chance of changing on you.
On your other computers you may want to disable the FTP service and only use your FTP server for that workload, or on your router block those ports from other internal IP addresses.
you need to create a host computer and a server or there are many free host that will redirect traffic to your address. Once you have the host and server running you can redirect traffic to your computer using your external IP or ftp folder and your ftp properties setup to the host information http://www.microsoft.com/technet/prodtechnol/host/prodd...
in your case the host is the ftp,http ext.....or get filezilla
The cost of running your own FTP server is very high: you need an always-on FTP server computer, then you need to install FTP server software. For this to be reliable, you need to take care of the security, which means you need to configure access permissions carefully and install OS patches periodically. Moreover, you need to backup the server and make sure you have redundant hardware. Then you need to have a good and reliable Internet connection.
The cost can be thousands of dollars, not including your time and efforts!
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