Installed a Firebox X500 recently as our company's firewall, after which our internal Serv-U server is no longer accessable via PASV mode in FTP. The Server has been configured to use ports 2030-2040 in PASV mode and tried even redirecting those ports as well as port 21 to the FTP.
Clients can still access the FTP via Active mode but using PASV mode in Internet Explorer they are still unable to connect.
If anyone knows of what may be causing this I'm all ears.
Thanks Much!
-Josh