BEFW11S4 FTP issue on Win2003 server

[runningphan]

I seem to be having an FTP issue with my BEFW11SR v4 router and Win2003 server running IIS6.0. Everything is configured and I connect without any problems and all that jazz but when I try to pull large files, the network connections seems to disconnect and then the FTP session will time out. I've tried setting the server time out in the FTP client side to a larger value, but still no luck. My thinking is that this is a cause of the router disconnecting because of a "lack" of activity even though data is being passed. Are there any settings on the router where I can disable a time out or auto shutoff of some kind? I thought that maybe it was within the NIC on the server but I haven't been able to find any settings either. I have no problems sending multiple files if they are not that long and I haven't done a test to see exactly how long after I start to download from there server until the disconnect, but I'm getting frustrated and we need to send/receive very large files.

Thanks for any help.

 

[runningphan]

Forgot to mention.....

The firmware is upgraded to the latest version and some other stuff I've noticed...

When I'm remotely logged into the server and I have a period of inactivity and then go back to the remote session, the broken connection icon will flash in the upper right hand corner of the screen after 30 seconds or so and then everything is fine again.

 

[runningphan]

Server is connected via the 4-port switch, not wirelessly connected.

 

[bcastner]

NAT router issues:

http://support.microsoft.com/default.aspx?scid=kb;en-us;Q283679

http://www.broadbandreports.com/forum/remark,1381832;root=equip,16;mode=flat

http://www.broadbandreports.com/faq/4101

http://www.broadbandreports.com/forum/remark,1700907~root=equip,16~mode=flat

 

[runningphan]

Looks like using the standard PassivePortRange instead of a defined one is working now. Should I be worried about having 1025-5000 open and forwarded to the server?

Thanks for the above info...I can always use more info.