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[basboycjj]

I am able to authenticate with the ftp site when I connect directly to my modem.  So, that would be the same public facing IP address. 

I have addressed this with the owners of the ftp site.  They claim they don't see anything on their side.

It has to be something they are doing that doesn't like something the router is doing.

[jimsander]

Based on your description of the problem, my WAGŪ is the back-connection of active mode transfers is being blocked. This is a VERY common problem for endpoints behind a router/firewall.

This would probably be easy to verify if you could see the logs from the FTP server. Assuming you can't do that, and you know the IP address of the site you're connecting to, try looking at the D-Link's logs and see if there are incoming connections being blocked. If you see any, or just want to try a possible solution anyway, look around your FTP program's settings for "passive mode" and make sure it is enabled.

[thecreator]

I am able to authenticate with the ftp site when I connect directly to my modem.  So, that would be the same public facing IP address. 

I have addressed this with the owners of the ftp site.  They claim they don't see anything on their side.

It has to be something they are doing that doesn't like something the router is doing.

Hi basboycjj,

Turn off the Router's Firewall and see what happens. I assume you have a Software Firewall being used?

[basboycjj]

Based on your description of the problem, my WAGŪ is the back-connection of active mode transfers is being blocked. This is a VERY common problem for endpoints behind a router/firewall.

This would probably be easy to verify if you could see the logs from the FTP server. Assuming you can't do that, and you know the IP address of the site you're connecting to, try looking at the D-Link's logs and see if there are incoming connections being blocked. If you see any, or just want to try a possible solution anyway, look around your FTP program's settings for "passive mode" and make sure it is enabled.

I've tried both active and passive, but I don't even get that far since I can't authenticate.  I don't have access to the server logs, but I have had them check and they said they don't see anything.  My logs don't show any blocking either.

Thanks

[basboycjj]

Hi basboycjj,

Turn off the Router's Firewall and see what happens. I assume you have a Software Firewall being used?

There is no complete turn off for the firewall.  I have added my computer to the DMZ and it didn't help.  I have also adjusted the firewall settings (SPI and NAT Endpoint Filtering) and nothing there helped.

Thanks.