Have you setup your router to do port forwarding to your computer? In order for an outside computer to establish connection with your server, you need to configure your router to forward the connection request to the IP address allocated by the router to your computer. For example.
Let's assume that you have cable/dsl connection and the IP address allocated by your ISP to you is 64.xx.xx.xxx (External IP).
Your Adsl router will in turn use DHCP and allocate an internal IP address to your computer, like 192.168.1.100 (Internal IP).
The DNS2GO software that you are using for a DNS name will be configured using your external IP address. So a person attempting to connect to your ftp will first contact your external IP address (64.xx.xx.xxx), which is however controlled by your adsl router. When your router receives this request, and you do not have IP forwarding setup, the router does not do anything with the connection request and as such nobody is able to connect to your ftp.
However if you configure and tell your router to forward all connections to 192.168.1.100 (your Internal IP), the request is then further processed and forwarded to your computer and a firm data connection is established. Additionally you also need to configure the ports you intend to use for your ftp. This is usually specified in the same line where you configure ip forwarding.
Check out the following photo on a typical linksys adsl router. You should be able to find this option under advanced
Over and above you also need to set a static IP address for your computer rather than use a dynamic one allocated by your adsl router. You can use DHCP and a static IP address at the same time, which ensures that your PC will automatically have an IP address pulled, whether or not you manually assign a static IP address.
The Router uses IP addresses that start with 192.168.1.( ). If the IP address is static, the last number is between 2 and 99. If the IP address is dynamic, the last number is 100 or greater.
For example, 192.168.1.43 is a static IP address. 192.168.1.127 is a dynamic IP address.
To set a static IP address, make sure to enter all four pieces of data below under the Setup Tab of the Setup Window:
IP Address 192.168.1.2 through 99
Subnet Mask 255.255.255.0
Default Gateway 192.168.1.1
DNS Server data From your ISP.*
*DNS server data can be found under the Status tab of the Router or by calling your ISP. You may have two or three sets of DNS data - enter in all the DNS Server data you have.
On the DNS tab under TCP/IP, enable DNS. In the Host section, enter any name you choose. You can even use your PC's name, which you can find under the Workgroup tab.
Under the Domain Name, enter the domain name of your ISP. In the DNS server, input all the DNS data.
Bring up the TCP/IP configuration window to confirm all the data is entered correctly.
If you are running Windows NT or 2000: Go to Start, Run, type "command" in the field, and press Enter. At the prompt, type in "Ipconfig/all," which will display all the TCP/IP data for your PC.
Blocking WAN Requests
By enabling the Block WAN Request feature, you can prevent your network from being "pinged," or detected by other Internet users. It also adds another layer of security to your network by hiding your network ports. Both functions of the Block WAN Request feature make it more difficult for outside users to work their way into your network.
Under the "Filters" tab, which is under the "Advanced" tab, select "Enable" and click Apply.
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Last edited by deadman at Aug 10 2002, 03:02 PM
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