i am using an spa-2100 along with other devices. i have DI-624 router and ftp server software running on a WinXPProSP2 box. when i connect through the router from other macines connected to the router, all is fine. when i connect to my internet connection directly rather than through the router or the spa-2100, all is also fine. in each case, outside users can connect to the ftp server.
when using just the spa-2100 and the internet connection, incoming ftp acccess is blocked by the 2100 since simply removing the spa-2100 from between the internet connection and the windows box provides for direct access to the ftp server software.
what settings in the spa-2100 would be blocking this? what should they be set as?
You could try port forwarding (on the application tab) port 21 to your ftp server. That should fix it. Other than that, there is not a firewall to try to get around.