![]() In order to compare a dissection with data from a less advanced analyzer that can not handle relative sequence numbers it might be required to temporarily disable this feature in Wireshark.įor Wireshark versions prior to 1.5: When the Relative Sequence Numbers preference is enabled Wireshark will also enable "Window Scaling".įor Wireshark 1.5 & newer: "Window Scaling" is a separate TCP preference enabled by default. Using relative sequence numbers is a usability enhancement, making the numbers easier to read and compare. This usability feature relies on features from TCP_Analyze_Sequence_Numbers so in order to use this feature you must also enable TCP_Analyze_Sequence_Numbers. ![]() This makes the numbers much smaller and easier to read and compare than the real numbers which normally are initialized to randomly selected numbers in the range 0 - (2^32)-1 during the SYN phase. This means that all SEQ and ACK numbers always start at 0 for the first packet seen in each conversation. This means that instead of displaying the real/absolute SEQ and ACK numbers in the display, Wireshark will display a SEQ and ACK number relative to the first seen segment for that conversation. TCP Relative Sequence Numbers & TCP Window Scalingīy default Wireshark and TShark will keep track of all TCP sessions and convert all Sequence Numbers (SEQ numbers) and Acknowledge Numbers (ACK Numbers) into relative numbers.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |