FTPS upload issues

Another anomaly for the boards.  We have a SonicWALL Pro4060 in one site and a Cisco ASA 5500 in the other.  The users from the SonicWALL site are reporting tons of packet drops when FTP'ing files to 1 client site that is using FTPS and TLS1 exclusive.  FTP connections and FTPS connections to anywhere else, from the SonicWALL side are fine.  No issue son the Cisco Side.  All of the machines are Server 2003 in both locations  I don't know the OS of the FTP server on the client site.  any clues?
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SuperTacoAsked:
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JacobfwCommented:
What version of SonicOS is the device running?
Do you see drop notices in the Firewall log on the device?

Could be related to TCP statefull Inspection,  disable ‘TCP Stateful Inspection’ on the ‘Firewall > TCP Settings page’
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SuperTacoAuthor Commented:
it could be related to stateful inspection . We're running an older SonicOS.  they refuse to update because it affect their test web server.  I see al ot of dropped packet,s which is probably hy the FTP fails.  
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SuperTacoAuthor Commented:
     SonicOS Enhanced 4.2.0.1-12e

there no setting sthere to disable SPI
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JacobfwCommented:
Do you have the "application Firewall enabled" on the Sonic?  Consider turning off and testing.
Do you have Gateway Anti-virus enabled" on the Sonic? Consider turning off and testing.

Either of these use Deep Packet Inspection and could be causing the issue.

Otherwise an upgrade to the SonicOS is most likely necessary or working with SonicWall which will probably recommend same.
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SuperTacoAuthor Commented:
I've go those turned off.  Still no change.  I'll try the OS upgrade.
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SuperTacoAuthor Commented:
thanks, but no dice.  
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JacobfwCommented:
Since you indicate you can see dropped packets on the Firewall related to this connection, we can assume it is the Firewall that is causing the problem. (please confirm that the dropped packets are associated with this connection)

1) Consider adding this question to a more specific Firewall zone on EE
2) Consider posting your problem to mysonicwall for further assistance from Sonicwall
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SuperTacoAuthor Commented:
Well, SonicWALL couldn't fix it but I did. I create a separate rule and route for that client, and disabled FTP bounce and increased my connection timeout.  thanks for the input guys
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SuperTacoAuthor Commented:
I ended up fixing this myself after callign sinWALL, but the comments did assist in pointing me in the right direction
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