So here is my thing. Nothing has changed in my environment. Nothing. All of the sudden 3 ports in my Passive range have stopped working. I use 50000-50300. So when the connection uses all of the ports and flips back around to the beginning few, it fails with a PASV - 425 error in the FTP log. This only happens with ports 50000-50002. So approx 30 of the 1500 files fail. Talk about needle in a haystack. Anyone come across this in the past? I know its rather vague, but its crazy. I've run wiresharks, continuous netstat -anp tcp commands and pretty much anything else i could think of. I actually think i've been looking at it too long. Any help would be GREATLY appreciated!!!!