I have a Sonicwall Pro 4060 running the enhanced OS. This is the managed the same as all the pro series Sonicwalls.
I have an IIS 7 box running FTPS (FTP over SSL) and need to get that through the firewall. I have the IIS server working fine, defined the data channel ports and added those as a service, then to the NAT rules and firewall rules on the Sonicwall.
When I try to connect from outside the firewall, I can get past login, see and accept the certificate on the server, opens passive mode then stalls opening a binary mode connection.
The firewall shows that it is dropping the defined data channel ports, but lists no rule why that data would be dropped.
"05/11/2009 10:51:15.880 Notice Network Access TCP connection dropped x.x.x.x, 12522, X1 x.x.x.x, 54522, X1 TCP FTPS - Data Channel
Can anyone offer any help? I've going round and round with this for hours now.