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Counting Denied Queriers

Created by dave. Last edited by dave, 2 years and 217 days ago. Viewed 742 times. #1
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(2016-05-09)

Problem

Show IPs getting denied responses to queries on my local DNS server, sorted by the number of denies in the log file.

Solution

# grep denied named.log.1 | awk '{print $4}' | awk -F '#' '{print $1}' | sort | uniq -c | sort -n | less

Commentary

There's nothing here to be proud of, but it works.

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This is a collection of techical information, much of it learned the hard way. Consider it a lab book or a /info directory. I doubt much of it will be of use to anyone else.

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