I have one VPN client that needs to upload files to an FTP server on our local network. It can connect to the FTP server just fine, list files, even get files, but cannot put. Testing through the command line FTP program, I get this...
200 PORT command 550 Access is denied
I don't have this issue if I FTP from a local client, using the same credentials. I also do not see anything being logged in ISA when I attempt the put, only when I connect and disconnect from the FTP server. I set up a rule to allow FTP to/from anywhere, and also a rule to allow anything to/from this particular client, with no success.
From: New Jersey
Did you tell ISA that this is a READ/WRITE service? By default, even if you define the rule as To/From, it blocks writes. Right-click your rule and select Configure FTP, then uncheck the Read Only box, which is checked by default.