I don't mean to hijack this thread but the error I can see with a wireshark trace looks like a block on port 6001 I see the first syn request for the TCP connection then a couple re-transmits but then no syn,ack response.

Recently the IT folks I'm working with identified the attempted connection as an active FTP one that is not supported by some recent firmware(Meraki specifically but possibly Sonicwall too).

They are going to try a patch to see if that sorts it.

I'll let you know how that goes.

-W