H:\>"C:\Program Files\Wireshark\tshark" -r trace-ooo.pcap -Y "tcp.analysis.out_of_order" 6907 0.269793 192.168.1.21 -> 192.168.9.6 SMB [TCP Out-Of-Order] Write AndX Response, 65536 bytes 10521 0.413026 192.168.1.21 -> 192.168.9.6 SMB [TCP Out-Of-Order] Write AndX Response, 65536 bytes 12492 0.489400 192.168.1.21 -> 192.168.9.6 SMB [TCP Out-Of-Order] Write AndX Response, 65536 …
Solved: After the power of MX device is turned on and attach is completed, the address of the specific server is received through the DNS query, I am 'TCP out of Sequence' logs in SmartView Tracker A "TCP Keep-Alive" packet is sent with a sequence number which is one less than the sequence number the receiver is expecting, because the receiver has already ACKed the sequence number of the Keep-Alive. This causes the Security Gateway to detect the packets as "TCP out of Sequence". Example of "TCP Keep-Alive" packet in WireShark: NTOPNG Reports TCP Out Of Order packets for 3 clients (2 @lordofpc734 said in NTOPNG Reports TCP Out Of Order packets for 3 clients (2 wireless, one wired): im in a SNR war with my ISP. (means im getting really high noises and crap service) That is a likely cause. A noisy line means lost packets and that in turn kills performance, as TCP will have to wait for retransmission of lost packets. Protecting Against TCP Out-of-Order DoS Attacks TCP guarantees that applications receive data in order. This means that TCP buffers any out-of-order packets it receives until ordered delivery can occur. To prevent connections from consuming too many resources, TCP limits the amount of data it accepts to the number of data bytes that the receiver is willing to receive and buffer. TCP does not
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