Wireshark mailing list archives

Re: How to breakdown the dns queries and show total number against each domain


From: Jeff Morriss <jeff.morriss.ws () gmail com>
Date: Wed, 8 Feb 2017 10:33:24 -0500

As mentioned by Graham yesterday you need to use the "unsubscribe" option
at the bottom of each email in order to unsubscribe from this mailing list.

On Wed, Feb 8, 2017 at 9:46 AM, Sherry Herdman <sherry.herdman1 () gmail com>
wrote:

I would like the community to stop contacting me...

On Feb 8, 2017 9:32 AM, "Peter Wu" <peter () lekensteyn nl> wrote:

Hi Abdul,

On Wed, Feb 08, 2017 at 10:18:18AM +0400, Abdul Khader wrote:
Dear All,
I have DNS capture. I would like to know total DNS queries against each
domain.
For example :
If there are DNS queries for google.com, facebook.com and 1000 other
domains
etc in my capture file, I want to know total queries for against each
domain.

Using the "tshark" program, you can produce a text file with all names
from DNS queries. Using coreutils tools (sort and uniq), you can then
for obtain a report. For example:

    tshark -r dns.pcapng -Y dns.flags.response==0 -Tfields -e
dns.qry.name | sort | uniq -c | sort -n

Note that it happens quite often that two queries are done for each
name, an A and AAAA lookup (for IPv4 and IPv6 addresses respectively).
This can result in larger numbers than you would expect.
--
Kind regards,
Peter Wu
https://lekensteyn.nl
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