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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How to do it...
- Filter the capture to display the DNS resolution packets for the application server and check the average time for resolution. This can be viewed by filtering the DNS packets and getting the I/O graph:
- Check whether the number of DNS packets is within the threshold that the DNS server can handle. If not, a DNS server upgrade needs to be considered.
- Check whether the time delta for resolution is within the threshold. Any delay in resolution will introduce a delay in end application session establishment:
The preceding graph is the I/O graph of DNS packets used to check the delay in name resolution.
- Check that the WAN bandwidth ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.