March 2018
Intermediate to advanced
626 pages
17h 32m
English
book
Network Analysis Using Wireshark 2 Cookbook - Second Edition
by Nagendra Kumar Nainar, Yoram Orzach, Yogesh Ramdoss
Content preview from Network Analysis Using Wireshark 2 Cookbook - Second Edition
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TCP timestamp
There are certain end applications that benefits from continuous round trip time (RTT) measurement. RTT measurement is performed by leveraging the TCP timestamp options. A TCP timestamp option will be included in all the segments. This option carries two fields as TSval and TSecr. The the sender will include local time when the segment is sent out in TSval field and TSecr will be set to 0. The receiver upon acknowledging a segment will include local time in the TSval and include the TSval from the last received segment from the sender.
The sender will use the combination of TSval and TSecr in the ACK segment to compute the RTT. For efficiency, most implementation will perform RTT measurement in one or two segments in each window ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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