I have a setup where there is an internal Windows 2008 IIS 7.5 FTP site on an internal network (1.1.1.1). I have a client on a DMZ network (seperate interface, 2.2.2.2) that cant connect to the FTP site since updating to version 9.005. The firewall log shows some weird traffic blocking on the way back from the FTP server to the client.
ALLOWED Rule 1 2.2.2.2:12345 ==> 1.1.1.1:21
Default Drop 1.1.1.1:12345 ==> 2.2.2.2:21
I've tried ANY ANY rules between the source and destination as well as creating a rule to handle the reverse FTP traffic. I also deselected the FTP helper and had it log data connections. No matter what it is dropping the connection going back even if their are firewall rules to allow it. This exact same setup and config worked fine on Version 8 and didn't stop working until upgrading to Version 9.005. Any one else seen this behavior or have any ideas as to what is going on?
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