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monitoring DNS and DHCP traffic

Posted on 2012-03-16
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Last Modified: 2012-03-27
hi guys

how would i go about monitoring DHCP and DNS network traffic?
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Question by:johnkesoglou
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4 Comments
 
LVL 22

Expert Comment

by:Matt V
ID: 37730807
What are you hoping to see?  Most of the information you want is available in the event logs.
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by:johnkesoglou
ID: 37730855
i am looking to find a program that would graph lows and peaks but isolate only DNS and DHCP traffic
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Expert Comment

by:Khandakar Ashfaqur Rahman
ID: 37731462
If you use Windows Domain then you can use Netmon Protocol Analyzer into server:
http://www.microsoft.com/download/en/details.aspx?id=4865

There are other protocol analyzers like as Wireshark or Ethereal can do it too.
http://www.wireshark.org/download.html
http://www.ethereal.com/
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giltjr earned 2000 total points
ID: 37731658
Do you want to do this for the whole network, or just to/from specific computers?

Assuming you have a fairly modern network you probably have switches.  If you have switches you either need to run the packet capture utility on the DNS and DHCP servers or setup a port that mirrors the port to the DNS and DHCP servers.  Otherwise you will not see the traffic.

I would suggest not using ethereal.  Although it is still available, it is no longer maintained.  Ethreal became Wireshark and that is maintained.
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