After 3 hours of flattening my forehead on my desk, I’m just about ready to give vent to a soothing primal scream.
I can not get IIS 5.1’s FTP server to function when behind a firewall, regardless of what sorts of port forwarding I do. I can get close: I could connect and authenticate, but no directory listings. No pasv love.
I’m missing something obvious. Hope I find it before that bulging vein in my forehead pops.
Possibly Related posts:
October 10th, 2007 
Tags: 
It depends on your firewall, actually.
If it’s a linux box (and why would it be anything else?
you need to load the ftp_conntrack module and I think one other _conntrack, once they are up, pasv works.
If it’s anything else….well….reboot two dozen times, and when that doesn’t work, format and re-install?
Turns out I had everything configured properly. I was testing with FileZilla and it was going straight for PASV mode — turns out, that wasn’t necessary. Once I turned off pasv everything worked fine.
Next time I test with command line ftp before busting out the pretty gui clients…