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Mayank_Shukla's avatar
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Jul 23, 2022

iquery source IP on BIG IP DNS


What is the source IP used by BIG IP DNS ( management IP or listerner IP ) to establish an iquery session with LTM.

Need clarity on what source/destination IP and port combinations should be explicity allowed on firewall ! 




1 Reply

  • As far as I know, the Big-IP will use a non-floating Self-IP given by the default routing table.

    You can discover the source address by using the ip command. In the following example the self ip will be the source for the iquery-target

    [admin@bigip-dns:Active:Standalone] ~ # ip route get via dev arm0 src