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rickylev_247499
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Feb 17, 2017

DNS Express Query Refused

Hello All, I have a BigIP instance setup in Azure. I have DNS Express setup with local bind disabled. the listener is set to accept queries from source address 0.0.0.0/0. My zones have transferred successfully but when i attempt to query from an external client, i get "Query Refused"

 

From the local command line TMSH (BASH), I can query the zones using the public IP of GTM/DNS.

 

Also, if I run TCPdump while the clients are querying, I can see the traffic come in.

 

Any ideas why I would be getting query refused for remote clients?

 

2 Replies

  • Don't know if this will help but have you checked DNS Express statistics to see if it sheds any light on the issue?

    tmsh show ltm dns zone 
    

    You can reset the stats before beginning a test: tmsh reset-stats ltm dns

  • To confirm, do you see bidirectional traffic when the query happens at the F5? Inbound and Outbound towards the client?