Set when the current sequence number is greater than the next expected sequence number. Set when the SYN flag is set (not SYN+ACK), we have an existing conversation using the same addresses and ports, and the sequence number is different than the existing conversation’s initial sequence number. The threshold is either the value shown in the “iRTT” (_rtt) field under “SEQ/ACK analysis” if it is present, or the default value of 3ms if it is not. The last segment arrived within the Out-Of-Order RTT threshold. The next expected sequence number and the next sequence number differ. The next expected sequence number is greater than the current sequence number. To do this, click View > Name Resolution and select “Resolve Network Addresses.In the forward direction, the segment length is greater than zero or the SYN or FIN is set. The details of the highlighted packet are displayed in the two lower panes in the Wireshark interface.Ī simple way to make reading the trace easier is to have Wireshark provide meaningful names for the source and destination IP addresses of the packets. The packets are presented in time order, and color coded according to the protocol of the packet. If Wireshark isn’t capturing packets, this icon will be gray.Ĭlicking the red square icon will stop the data capture so you can analyze the packets captured in the trace. This gives you the opportunity to save or discard the captured packets, and restart the trace. Shark fin with circular arrow: If this is green, clicking it will stop the currently running trace.If Wireshark isn’t capturing packets, this icon will be gray. Square: If this is red, clicking it will stop a running packet capture.Shark fin: If this is blue, clicking it will start a packet capture. If Wireshark is capturing packets, this icon will be gray.
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