You recently said one could probably not run an FTP site with no public IP address inside an apartment complex. You can use the software at www.no-ip.com or set up an automated system that updates a link on a Web site with the correct IP address. We are You\u00a0 recently said\u00a0one could probably not run an FTP site with no public IP address inside an apartment complex. You can use software at www.noip.com or set up an automated system that updates a link on a Web site with the correct IP address.We are doing something similar via a DSL modem and a computer. We use Open Domain Server, which lets us have a subdomain on one of the domains supported by them, and we run a program locally called DynSite that keeps ODSs servers updated with the IP address assigned to us by our ISP. Did we miss something?My point was that a properly configured firewall at the Internet boundary could block inbound FTP connections regardless of how someone configured the PC FTP server.If the firewall is not blocking the inbound traffic, the solutions you describe can work. The idea is to provide an unchanging Internet link that is kept updated with the changing Internet IP address of the FTP server.You can handle this with scripts or using the tools you mentioned. Another way to identify your Internet-visible IP address is by looking for the REMOTE_ADDR line in the output from\u00a0this site.