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 header filters
In UDP, the header structure is very simple—source and destination ports, packet length, and checksum. Therefore, the only significant information here is the port numbers.
TCP, on the other hand, is more complex, and uses connectivity and reliability mechanisms that can be monitored by Wireshark. Using tcp.flags, tcp.analysis, and other smart filters will help you with resolving performance problems (retransmissions, duplicate ACKs, zero-windows, and so on), or protocol operations issues such as resets, half-opens, and so on.
Common display filters in this category are as follows:
- tcp.analysis: For TCP analysis criteria such as retransmission, duplicate ACKs, or window issues. Examples for these filters are (you can use ...
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