11-18-2009
Quote:
Trouble is, according to my tcpdumps, the amount of traffic on port 53 has increased.
Which type of traffic on port 53 are you talking about? Outgoing to an external nameserver(s) or DNS queries from your internal systems.
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LEARN ABOUT DEBIAN
dns-flood-detector
DNS-FLOOD-DETECTOR(8) dns flood detection tool DNS-FLOOD-DETECTOR(8)
NAME
DNS-FLOOD-DETECTOR - dns flood detection and alert tool
SYNOPSIS
dns-flood-detector [-b|-d] [-v] [-h] [-i device] [-t n] [-a n] [-w n] [-x n] [-m n]
DESCRIPTION
DNS Flood Detector was developed to detect abusive usage levels on high traffic nameservers and to enable quick response to the use of
one's nameserver to facilitate spam.
OPTIONS
-b run in foreground in bindsnap mode
-d run in background in daemon mode
-v verbose output - use again for more verbosity
-h display help
-i device
specify device name to listen on
-t n alarm at >n queries per second
-a n reset alarm after n seconds
-w n calculate stats every n seconds
-x n create n buckets
-m n report overall stats every n seconds
SEE ALSO
Website <http://www.adotout.com/>
AUTHOR
DNS-FLOOD-DETECTOR was written by Dennis Opacki <dopacki@adotout.com>.
This manual page was written by Jan Wagner <waja@cyconet.org>, for the Debian project (but may be used by others).
1.10 2006-11-03 DNS-FLOOD-DETECTOR(8)