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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Fixed pattern broadcasts
You can also have broadcasts in fixed patterns, for example, every fixed amount of time, as shown in this screenshot:
Figure 8.4: fixed pattern broadcasts
The graph is configured for a Tick interval (under X Axis) of 1 min, and for the following filters:
- The red filter for all broadcasts in the network (eth.addr ==ff:ff:ff:ff:ff:ff)
- The green filter for broadcasts that are ARP requests (arp.opcode ==1)
What we see here is that around every 5 minutes, there is a burst of ARP requests (the green dots). If we click on one of the dots in the graph, it will take us to the packet in the capture pane.
In the following screenshot, ...
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