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f51's avatar
f51
Icon for Cirrostratus rankCirrostratus
Dec 30, 2016

F5 3DNS

Hi F5 professionals,

 

I have one quick question, can anybody ans me please ?

 

I am working on 3dns devices, I want to capture traffic on that device. So can we do tcpdump ?

 

If we can please guide me in right path.

 

Thanks in advance.

 

application delivery
BIG-IP DNS

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  • Stanislas_Piro2's avatar
    Stanislas_Piro2
    Icon for Cumulonimbus rankCumulonimbus
    Dec 30, 2016

    Hi,

    do you mean big-ip dns (new name of GTM (from version 9.X to 11.X), which was new name of 3DNS (before version 9.X))

    Yes, you can use tcpdump with command:

    tcpdump -nni any -s0 -A udp port 53 and host X.X.X.X

    this will capture

    • on any interfaces (-i any)
    • without resolving host and port (-nn)
    • full packet and not only headers (-s0)
    • display on terminal out the packet content (-A)
    • with filter 
      udp port 53 and host X.X.X.X