Hello, we have a 3rd party app running on our server that accesses a public device via telnet and that device transmits data back to our server via FTP(3rd party SW needs 20, 21, and 23 open). We have an Any/Any rule for outbound traffic and have created individual Business Application rules for each of the ports. I know I can probably lump the ports into a group, but for the sake of testing and log viewing I did it this way. We can successfully use Filezilla FTP client from a different physical location (public IP) and show successful application of the firewall rules in the logviewer, so we are confident our rules are functioning correctly. This other public IP device sporadically shows communication when we initiate the connection from the 3rd party app from our internal server. We seem to be able to telnet out to it but fails on the FTP return from the public device to our server. The logviewer shows it as rule0, access denied, and invalid packets suggesting maybe a timeout issue? Any help would be appreciated.
Thanks, Vito
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