Difference between revisions of "Denied DNS Requests"
From James Dooley's Wiki
(Created page with "==Overview== Find denied queries against DNS, good for finding sites that are no longer hosted or do not have valid DNS records. ==Script== <code>[bash,n] cat /var/log/messages ...") |
(No difference)
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Revision as of 14:24, 6 December 2011
Overview
Find denied queries against DNS, good for finding sites that are no longer hosted or do not have valid DNS records.
Script
[bash,n]
cat /var/log/messages | grep named | grep denied | cut -d "'" -f2 | cut -d "/" -f1 | sort | uniq -ci | sort -nr > /root/denied_dns.txt
