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Monitor DNS Traffic & You Just Might Catch A RAT
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RetiredUser
RetiredUser,
 User Rank: Ninja
6/12/2014 | 1:00:52 PM
Know Your Enemy
I try not to name specific tools unless I'm doing an analysis, but for Enterprise-level network monitoring I rather prefer OpenNMS network management application platform and Nagios IT monitoring with its solid DNS monitoring solution. But I have to say to all network engineers, also grab a copy of a penetration testing distribution like Kali Linux and understand what cyber criminals are looking for, how they search for it, and what the raw data and DNS traffic looks like. With highly configurable DNS monitoring tools, you can start tailoring the monitoring to specific types of traffic (if the tool isn't already - Nagios is pretty hefty in that regard) based upon your research.  With tips like the ones in this article, some first-hand experience and solid tools, you will maintain a more secure network environment. 
Robert McDougal
Robert McDougal,
 User Rank: Ninja
6/13/2014 | 4:09:26 PM
Re: Know Your Enemy
Very good points Christian!  I would like to add that Nagios provides a plugin for DNS monitoring as well.
Randy Naramore
Randy Naramore,
 User Rank: Ninja
6/16/2014 | 3:21:34 PM
Re: Know Your Enemy
Very interesting post, DNS is the key to discovering your network. If hackers can get to the DNS servers perform a transfer then you are had. This is the reason DNS is not allowed in controlled environments such as DMZ's. The specific tool set you mentioned (Kali-Linux) is a good one indeed.


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