TCP Previous segment lost] [TCP segment of a reassembled PDU], [TCP Out-of-order] [TCP segment of a a reassembled PDU], [TCP Dup ACK 170#1, This is what I got from wireshark wiki: The hint "TCP segment of a reassembled PDU" indicates that the workstation is sending a large message to the server. In fact the message is so large that it is split over several frames. As soon as Wireshark sees the last frame it pieces the segments together and decodes the whole message I usually see these messages when there is a latency for the TCP traffic. And in order to determine the file that is being downloaded, and take necessary action, its always recommended to have SSL decryption enabled ( without SSL decryption, the PANFW skips the file check for its encrypted ). SSL decryption introduces a relative delay becuase the firewall has to decrypt the traffic, match the traffic against the signatures and encrypt it back. So I would expect this to be a normal behavior, if SSL decryption is enabled. In addition, with wildfire in action, the firewall looks up at the first few packets of the file, and then calculates the hash, and then looks up for the hash matching that of any threat. This also causes a small delay, relative to the other firewall where wildfire is not configured. So the client and the server are expecting a steady TCP flow, and when there is a delay, they use these mechanisms to check that the stream is not dead BR, Karthik
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